Applied changes for Rubocop 0.51.

.rubocop.yml

@@ -45,29 +45,29 @@ Style/TrailingCommaInArguments:
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#no-trailing-array-commas'
   Enabled: false
 
-Style/SpaceInsideParens:
+Layout/SpaceInsideParens:
   Description: 'No spaces after ( or before ).'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#no-spaces-braces'
   Enabled: false
 
-Style/SpaceAfterMethodName:
+Layout/SpaceAfterMethodName:
   Description: >-
                  Do not put a space between a method name and the opening
                  parenthesis in a method definition.
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#parens-no-spaces'
   Enabled: false
 
-Style/LeadingCommentSpace:
+Layout/LeadingCommentSpace:
   Description: 'Comments should start with a space.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#hash-space'
   Enabled: false
 
-Style/MethodCallParentheses:
+Style/MethodCallWithoutArgsParentheses:
   Description: 'Do not use parentheses for method calls with no arguments.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#no-args-no-parens'
   Enabled: false
 
-Style/SpaceInsideBrackets:
+Layout/SpaceInsideBrackets:
   Description: 'No spaces after [ or before ].'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#no-spaces-braces'
   Enabled: false
@@ -83,19 +83,19 @@ Style/MethodDefParentheses:
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#method-parens'
   Enabled: false
 
-Style/EmptyLinesAroundClassBody:
+Layout/EmptyLinesAroundClassBody:
   Description: "Keeps track of empty lines around class bodies."
   Enabled: false
 
-Style/EmptyLinesAroundMethodBody:
+Layout/EmptyLinesAroundMethodBody:
   Description: "Keeps track of empty lines around method bodies."
   Enabled: false
 
-Style/EmptyLinesAroundBlockBody:
+Layout/EmptyLinesAroundBlockBody:
   Description: "Keeps track of empty lines around block bodies."
   Enabled: false
 
-Style/EmptyLinesAroundModuleBody:
+Layout/EmptyLinesAroundModuleBody:
   Description: "Keeps track of empty lines around module bodies."
   Enabled: false
 
@@ -143,17 +143,29 @@ Rails/HasAndBelongsToMany:
 #  StyleGuide: 'https://github.com/bbatsov/rails-style-guide#has-many-through'
   Enabled: false
 
+Rails/SkipsModelValidations:
+  Description: >-
+                 Use methods that skips model validations with caution.
+                 See reference for more information.
+  Reference: 'http://guides.rubyonrails.org/active_record_validations.html#skipping-validations'
+  Enabled: true
+  Exclude:
+    - test/**/*
+
 Style/ClassAndModuleChildren:
   Description: 'Checks style of children classes and modules.'
   Enabled: false
 
-Style/FileName:
+Naming/FileName:
   Description: 'Use snake_case for source file names.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#snake-case-files'
   Enabled: true
   Exclude:
     - 'script/websocket-server.rb'
 
+Naming/VariableNumber:
+  Description: 'Use the configured style when numbering variables.'
+  Enabled: false
 
 # 2.0
 
@@ -184,8 +196,23 @@ Metrics/ModuleLength:
   Description: 'Avoid modules longer than 100 lines of code.'
   Enabled: false
 
+Metrics/BlockLength:
+  Enabled: false
+
+Lint/RescueWithoutErrorClass:
+  Enabled: false
+
+Rails/ApplicationRecord:
+  Enabled: false
+
 # TODO
 
+Rails/HasManyOrHasOneDependent:
+  Enabled: false
+
+Style/DateTime:
+  Enabled: false
+
 Style/Documentation:
   Description: 'Document classes and non-namespace modules.'
   Enabled: false
@@ -193,7 +220,7 @@ Style/Documentation:
 Lint/UselessAssignment:
   Enabled: false
 
-Style/ExtraSpacing:
+Layout/ExtraSpacing:
   Description: 'Do not use unnecessary spacing.'
   Enabled: false
 
@@ -216,3 +243,13 @@ Style/NumericPredicate:
   Enabled: true
   Exclude:
     - "**/*_spec.rb"
+
+Lint/AmbiguousBlockAssociation:
+  Description: >-
+                 Checks for ambiguous block association with method when param passed without
+                 parentheses.
+  StyleGuide: '#syntax'
+  Enabled: true
+  Exclude:
+    - "**/*_spec.rb"
+    - "**/*_examples.rb"

Gemfile

@@ -1,112 +1,131 @@
 source 'https://rubygems.org'
 
+# core - base
 ruby '2.4.1'
-
 gem 'rails', '5.1.4'
-gem 'rails-observers'
+
+# core - rails additions
 gem 'activerecord-session_store'
-
+gem 'composite_primary_keys'
-# Bundle edge Rails instead:
-#gem 'rails',     :git => 'git://github.com/rails/rails.git'
-
 gem 'json'
+gem 'rails-observers'
 
-# Supported DBs
+# core - application servers
+gem 'puma', group: :puma
+gem 'unicorn', group: :unicorn
+
+# core - supported ORMs
 gem 'activerecord-nulldb-adapter', group: :nulldb
 gem 'mysql2', group: :mysql
 gem 'pg', group: :postgres
 
+# core - asynchrous task execution
+gem 'daemons'
+gem 'delayed_job_active_record'
+
+# core - websocket
+gem 'em-websocket'
+gem 'eventmachine'
+
+# core - password security
+gem 'argon2'
+
+# performance - Memcached
+gem 'dalli'
+
+# asset handling
 group :assets do
-  gem 'sass-rails' #, github: 'rails/sass-rails'
+  # asset handling - coffee-script
   gem 'coffee-rails'
   gem 'coffee-script-source'
 
-  gem 'sprockets'
+  # asset handling - frontend templating
-
-  gem 'uglifier'
   gem 'eco'
+
+  # asset handling - SASS
+  gem 'sass-rails'
+
+  # asset handling - pipeline
+  gem 'sprockets'
+  gem 'uglifier'
 end
 
 gem 'autoprefixer-rails'
 
+# asset handling - javascript execution for e.g. linux
+gem 'execjs'
+gem 'libv8'
+gem 'therubyracer'
+
+# authentication - provider
 gem 'doorkeeper'
 gem 'oauth2'
 
+# authentication - third party
 gem 'omniauth'
-gem 'omniauth-oauth2'
 gem 'omniauth-facebook'
 gem 'omniauth-github'
 gem 'omniauth-gitlab'
 gem 'omniauth-google-oauth2'
 gem 'omniauth-linkedin-oauth2'
-gem 'omniauth-twitter'
 gem 'omniauth-microsoft-office365'
+gem 'omniauth-oauth2'
+gem 'omniauth-twitter'
 gem 'omniauth-weibo-oauth2'
 
-gem 'twitter'
+# channels
-gem 'telegramAPI'
 gem 'koala'
-gem 'mail'
+gem 'telegramAPI'
-gem 'valid_email2'
+gem 'twitter'
+
+# channels - email additions
 gem 'htmlentities'
-
+gem 'mail', '2.6.6'
 gem 'mime-types'
+gem 'valid_email2'
 
+# feature - business hours
 gem 'biz'
 
-gem 'composite_primary_keys'
+# feature - signature diffing
-gem 'delayed_job_active_record'
+gem 'diffy'
-gem 'daemons'
-
-gem 'simple-rss'
-
-# e. g. on linux we need a javascript execution
-gem 'libv8'
-gem 'execjs'
-gem 'therubyracer'
-
-require 'erb'
-require 'yaml'
-
-gem 'net-ldap'
-
-# password security
-gem 'argon2'
 
+# feature - excel output
 gem 'writeexcel'
-gem 'icalendar'
+
-gem 'icalendar-recurrence'
+# feature - device logging
 gem 'browser'
 
+# feature - iCal export
+gem 'icalendar'
+gem 'icalendar-recurrence'
+
 # integrations
-gem 'slack-notifier'
 gem 'clearbit'
+gem 'net-ldap'
+gem 'slack-notifier'
 gem 'zendesk_api'
-gem 'viewpoint'
+
-gem 'rubyntlm', git: 'https://github.com/wimm/rubyntlm.git'
+# integrations - exchange
 gem 'autodiscover', git: 'https://github.com/thorsteneckel/autodiscover.git'
-
+gem 'rubyntlm', git: 'https://github.com/wimm/rubyntlm.git'
-# event machine
+gem 'viewpoint'
-gem 'eventmachine'
-gem 'em-websocket'
-
-gem 'diffy'
-gem 'dalli'
 
 # Gems used only for develop/test and not required
 # in production environments by default.
 group :development, :test do
 
+  # test frameworks
   gem 'rspec-rails'
   gem 'test-unit'
-  gem 'spring'
+
-  gem 'spring-commands-rspec'
+  # test DB
   gem 'sqlite3'
 
   # code coverage
+  gem 'coveralls', require: false
   gem 'simplecov'
   gem 'simplecov-rcov'
-  gem 'coveralls',         require: false
 
   # UI tests w/ Selenium
   gem 'selenium-webdriver', '2.53.4'
@@ -121,9 +140,9 @@ group :development, :test do
   gem 'guard-symlink', require: false
 
   # code QA
+  gem 'coffeelint'
   gem 'pre-commit'
   gem 'rubocop'
-  gem 'coffeelint'
 
   # changelog generation
   gem 'github_changelog_generator'
@@ -138,10 +157,7 @@ group :development, :test do
   gem 'webmock'
 end
 
-gem 'puma', group: :puma
+# load onw gems for development and testing purposes
-gem 'unicorn', group: :unicorn
-
-# load onw gem's
 local_gemfile = File.join(File.dirname(__FILE__), 'Gemfile.local')
 if File.exist?(local_gemfile)
   eval_gemfile local_gemfile

Gemfile.lock

@@ -217,13 +217,12 @@ GEM
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.12)
-    mail (2.7.0)
+    mail (2.6.6)
-      mini_mime (>= 0.1.1)
+      mime-types (>= 1.16, < 4)
     memoizable (0.4.2)
       thread_safe (~> 0.3, >= 0.3.1)
     method_source (0.9.0)
     mime-types (2.99.3)
-    mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     minitest (5.10.3)
     multi_json (1.12.2)
@@ -389,7 +388,6 @@ GEM
       rubyzip (~> 1.0)
       websocket (~> 1.0)
     shellany (0.0.1)
-    simple-rss (1.3.1)
     simple_oauth (0.3.1)
     simplecov (0.15.1)
       docile (~> 1.1.0)
@@ -399,10 +397,6 @@ GEM
     simplecov-rcov (0.2.3)
       simplecov (>= 0.4.1)
     slack-notifier (2.3.1)
-    spring (2.0.2)
-      activesupport (>= 4.2)
-    spring-commands-rspec (1.0.4)
-      spring (>= 0.9.1)
     sprockets (3.7.1)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -508,7 +502,7 @@ DEPENDENCIES
   json
   koala
   libv8
-  mail
+  mail (= 2.6.6)
   mime-types
   mysql2
   net-ldap
@@ -535,12 +529,9 @@ DEPENDENCIES
   rubyntlm!
   sass-rails
   selenium-webdriver (= 2.53.4)
-  simple-rss
   simplecov
   simplecov-rcov
   slack-notifier
-  spring
-  spring-commands-rspec
   sprockets
   sqlite3
   telegramAPI

app/controllers/application_controller/authenticates.rb

@@ -18,7 +18,7 @@ module ApplicationController::Authenticates
       raise Exceptions::NotAuthorized, 'Not authorized (token)!'
     end
 
-    return false if current_user && current_user.permissions?(key)
+    return false if current_user&.permissions?(key)
     raise Exceptions::NotAuthorized, 'Not authorized (user)!'
   end
 

app/controllers/application_controller/handles_devices.rb

@@ -26,8 +26,7 @@ module ApplicationController::HandlesDevices
     if user_device_updated_at
       # check if entry exists / only if write action
       diff = Time.zone.now - 10.minutes
-      method = request.method
+      if %w[GET OPTIONS HEAD].include?(request.method)
-      if method == 'GET' || method == 'OPTIONS' || method == 'HEAD'
         diff = Time.zone.now - 30.minutes
       end
 

app/controllers/application_controller/handles_errors.rb

@@ -72,7 +72,7 @@ module ApplicationController::HandlesErrors
       data[:error_human] = data[:error]
     end
 
-    if Rails.env.production? && !data[:error_human].empty?
+    if Rails.env.production? && data[:error_human].present?
       data[:error] = data.delete(:error_human)
     end
     data

app/controllers/application_controller/renders_models.rb

@@ -146,7 +146,7 @@ module ApplicationController::RendersModels
   def model_references_check(object, params)
     generic_object = object.find(params[:id])
     result = Models.references(object, generic_object.id)
-    return false if result.empty?
+    return false if result.blank?
     raise Exceptions::UnprocessableEntity, 'Can\'t delete, object has references.'
   rescue => e
     raise Exceptions::UnprocessableEntity, e

app/controllers/channels_email_controller.rb

@@ -226,7 +226,7 @@ class ChannelsEmailController < ApplicationController
 
       Channel.where(area: 'Email::Notification').each do |channel|
         active = false
-        if adapter =~ /^#{channel.options[:outbound][:adapter]}$/i
+        if adapter.match?(/^#{channel.options[:outbound][:adapter]}$/i)
           active = true
           channel.options = {
             outbound: {

app/controllers/form_controller.rb

@@ -44,7 +44,7 @@ class FormController < ApplicationController
       errors['email'] = 'required'
     elsif params[:email] !~ /@/
       errors['email'] = 'invalid'
-    elsif params[:email] =~ /(>|<|\||\!|"|§|'|\$|%|&|\(|\)|\?|\s|\.\.)/
+    elsif params[:email].match?(/(>|<|\||\!|"|§|'|\$|%|&|\(|\)|\?|\s|\.\.)/)
       errors['email'] = 'invalid'
     end
     if params[:title].blank?
@@ -126,19 +126,16 @@ class FormController < ApplicationController
       internal: false,
     )
 
-    if params[:file]
+    params[:file]&.each do |file|
-
+      Store.add(
-      params[:file].each do |file|
+        object: 'Ticket::Article',
-        Store.add(
+        o_id: article.id,
-          object: 'Ticket::Article',
+        data: file.read,
-          o_id: article.id,
+        filename: file.original_filename,
-          data: file.read,
+        preferences: {
-          filename: file.original_filename,
+          'Mime-Type' => file.content_type,
-          preferences: {
+        }
-            'Mime-Type' => file.content_type,
+      )
-          }
-        )
-      end
     end
 
     UserInfo.current_user_id = 1

app/controllers/getting_started_controller.rb

@@ -66,7 +66,7 @@ curl http://localhost/api/v1/getting_started -v -u #{login}:#{password}
 
     # verify auto wizard file
     auto_wizard_data = AutoWizard.data
-    if !auto_wizard_data || auto_wizard_data.empty?
+    if auto_wizard_data.blank?
       render json: {
         auto_wizard: true,
         auto_wizard_success: false,
@@ -132,7 +132,7 @@ curl http://localhost/api/v1/getting_started -v -u #{login}:#{password}
     end
 
     # validate organization
-    if !params[:organization] || params[:organization].empty?
+    if params[:organization].blank?
       messages[:organization] = 'Invalid!'
     else
       settings[:organization] = params[:organization]
@@ -146,7 +146,7 @@ curl http://localhost/api/v1/getting_started -v -u #{login}:#{password}
       end
     end
 
-    if !messages.empty?
+    if messages.present?
       render json: {
         result: 'invalid',
         messages: messages,

app/controllers/import_otrs_controller.rb

@@ -26,7 +26,7 @@ class ImportOtrsController < ApplicationController
     if !response.success? && response.code.to_s !~ /^40.$/
       message_human = ''
       translation_map.each do |key, message|
-        if response.error.to_s =~ /#{Regexp.escape(key)}/i
+        if response.error.to_s.match?(/#{Regexp.escape(key)}/i)
           message_human = message
         end
       end
@@ -39,7 +39,7 @@ class ImportOtrsController < ApplicationController
     end
 
     result = {}
-    if response.body =~ /zammad migrator/
+    if response.body.match?(/zammad migrator/)
 
       migrator_response = JSON.parse(response.body)
 
@@ -86,7 +86,7 @@ class ImportOtrsController < ApplicationController
           message_human: migrator_response['Error']
         }
       end
-    elsif response.body =~ /(otrs\sag|otrs\.com|otrs\.org)/i
+    elsif response.body.match?(/(otrs\sag|otrs\.com|otrs\.org)/i)
       result = {
         result: 'invalid',
         message_human: 'Host found, but no OTRS migrator is installed!'
@@ -144,7 +144,7 @@ class ImportOtrsController < ApplicationController
     end
 
     result = 'ok'
-    if !issues.empty?
+    if issues.present?
       result = 'failed'
     end
     render json: {

app/controllers/import_zendesk_controller.rb

@@ -28,7 +28,7 @@ class ImportZendeskController < ApplicationController
     if !response.success?
       message_human = ''
       translation_map.each do |key, message|
-        if response.error.to_s =~ /#{Regexp.escape(key)}/i
+        if response.error.to_s.match?(/#{Regexp.escape(key)}/i)
           message_human = message
         end
       end

app/controllers/integration/check_mk_controller.rb

@@ -133,6 +133,8 @@ UserAgent: #{request.env['HTTP_USER_AGENT']}
     if Setting.get('check_mk_token') != params[:token]
       raise Exceptions::UnprocessableEntity, 'Invalid token!'
     end
+
+    true
   end
 
 end

app/controllers/integration/idoit_controller.rb

@@ -1,9 +1,9 @@
 # Copyright (C) 2012-2016 Zammad Foundation, http://zammad-foundation.org/
 
 class Integration::IdoitController < ApplicationController
-  prepend_before_action -> { authentication_check(permission: ['agent.integration.idoit', 'admin.integration.idoit']) }, except: [:verify, :query, :update]
+  prepend_before_action -> { authentication_check(permission: ['agent.integration.idoit', 'admin.integration.idoit']) }, except: %i[verify query update]
   prepend_before_action -> { authentication_check(permission: ['admin.integration.idoit']) }, only: [:verify]
-  prepend_before_action -> { authentication_check(permission: ['ticket.agent']) }, only: [:query, :update]
+  prepend_before_action -> { authentication_check(permission: ['ticket.agent']) }, only: %i[query update]
 
   def verify
     response = ::Idoit.verify(params[:api_token], params[:endpoint], params[:client_id])

app/controllers/integration/sipgate_controller.rb

@@ -93,6 +93,8 @@ class Integration::SipgateController < ApplicationController
       xml_error('Feature not configured, please contact your admin!')
       return
     end
+
+    true
   end
 
   def config_integration

app/controllers/long_polling_controller.rb

@@ -18,7 +18,7 @@ class LongPollingController < ApplicationController
       params['data'] = {}
     end
     session_data = {}
-    if current_user && current_user.id
+    if current_user&.id
       session_data = { 'id' => current_user.id }
     end
 
@@ -61,13 +61,12 @@ class LongPollingController < ApplicationController
 
     # check queue to send
     begin
-
       # update last ping
       4.times do
         sleep 0.25
       end
       #sleep 1
-      Sessions.touch(client_id)
+      Sessions.touch(client_id) # rubocop:disable Rails/SkipsModelValidations
 
       # set max loop time to 24 sec. because of 30 sec. timeout of mod_proxy
       count = 3

app/controllers/monitoring_controller.rb

@@ -1,7 +1,7 @@
 # Copyright (C) 2012-2016 Zammad Foundation, http://zammad-foundation.org/
 
 class MonitoringController < ApplicationController
-  prepend_before_action -> { authentication_check(permission: 'admin.monitoring') }, except: [:health_check, :status]
+  prepend_before_action -> { authentication_check(permission: 'admin.monitoring') }, except: %i[health_check status]
   skip_before_action :verify_csrf_token
 
 =begin
@@ -39,7 +39,7 @@ curl http://localhost/api/v1/monitoring/health_check?token=XXX
       # inbound channel
       if channel.status_in == 'error'
         message = "Channel: #{channel.area} in "
-        %w(host user uid).each do |key|
+        %w[host user uid].each do |key|
           next if channel.options[key].blank?
           message += "key:#{channel.options[key]};"
         end
@@ -52,7 +52,7 @@ curl http://localhost/api/v1/monitoring/health_check?token=XXX
       # outbound channel
       next if channel.status_out != 'error'
       message = "Channel: #{channel.area} out "
-      %w(host user uid).each do |key|
+      %w[host user uid].each do |key|
         next if channel.options[key].blank?
         message += "key:#{channel.options[key]};"
       end
@@ -60,7 +60,7 @@ curl http://localhost/api/v1/monitoring/health_check?token=XXX
     end
 
     # unprocessable mail check
-    directory = "#{Rails.root}/tmp/unprocessable_mail"
+    directory = Rails.root.join('tmp', 'unprocessable_mail').to_s
     if File.exist?(directory)
       count = 0
       Dir.glob("#{directory}/*.eml") do |_entry|
@@ -161,9 +161,7 @@ curl http://localhost/api/v1/monitoring/status?token=XXX
     map.each do |key, class_name|
       status[:counts][key] = class_name.count
       last = class_name.last
-      status[:last_created_at][key] = if last
+      status[:last_created_at][key] = last&.created_at
-                                        last.created_at
-                                      end
     end
 
     render json: status

app/controllers/object_manager_attributes_controller.rb

@@ -98,20 +98,20 @@ class ObjectManagerAttributesController < ApplicationController
   private
 
   def check_params
-    if params[:data_type] =~ /^(boolean)$/
+    if params[:data_type].match?(/^(boolean)$/)
       if params[:data_option][:options]
+        # rubocop:disable Lint/BooleanSymbol
         if params[:data_option][:options][:false]
-          params[:data_option][:options][false] = params[:data_option][:options][:false]
+          params[:data_option][:options][false] = params[:data_option][:options].delete(:false)
-          params[:data_option][:options].delete(:false)
         end
         if params[:data_option][:options][:true]
-          params[:data_option][:options][true] = params[:data_option][:options][:true]
+          params[:data_option][:options][true] = params[:data_option][:options].delete(:true)
-          params[:data_option][:options].delete(:true)
         end
+        # rubocop:enable Lint/BooleanSymbol
       end
     end
     if params[:data_option] && !params[:data_option].key?(:default)
-      params[:data_option][:default] = if params[:data_type] =~ /^(input|select|tree_select)$/
+      params[:data_option][:default] = if params[:data_type].match?(/^(input|select|tree_select)$/)
                                          ''
                                        end
     end

app/controllers/organizations_controller.rb

@@ -237,12 +237,16 @@ curl http://localhost/api/v1/organization/{id} -v -u #{login}:#{password} -H "Co
       params[:limit].to_i = 500
     end
 
+    query = params[:query]
+    if query.respond_to?(:permit!)
+      query = query.permit!.to_h
+    end
     query_params = {
-      query: params[:query],
+      query: query,
       limit: params[:limit],
       current_user: current_user,
     }
-    if params[:role_ids] && !params[:role_ids].empty?
+    if params[:role_ids].present?
       query_params[:role_ids] = params[:role_ids]
     end
 

app/controllers/search_controller.rb

@@ -16,6 +16,9 @@ class SearchController < ApplicationController
 
     # get params
     query = params[:query]
+    if query.respond_to?(:permit!)
+      query = query.permit!.to_h
+    end
     limit = params[:limit] || 10
 
     # convert objects string into array of class names

app/controllers/sessions_controller.rb

@@ -1,8 +1,8 @@
 # Copyright (C) 2012-2016 Zammad Foundation, http://zammad-foundation.org/
 
 class SessionsController < ApplicationController
-  prepend_before_action :authentication_check, only: [:switch_to_user, :list, :delete]
+  prepend_before_action :authentication_check, only: %i[switch_to_user list delete]
-  skip_before_action :verify_csrf_token, only: [:create, :show, :destroy, :create_omniauth, :create_sso]
+  skip_before_action :verify_csrf_token, only: %i[create show destroy create_omniauth create_sso]
 
   # "Create" a login, aka "log the user in"
   def create

app/controllers/settings_controller.rb

@@ -93,11 +93,11 @@ class SettingsController < ApplicationController
 
   def keep_certain_attributes
     setting = Setting.find(params[:id])
-    [:name, :area, :state_initial, :frontend, :options].each do |key|
+    %i[name area state_initial frontend options].each do |key|
       params.delete(key)
     end
-    if !params[:preferences].empty?
+    if params[:preferences].present?
-      [:online_service_disable, :permission, :render].each do |key|
+      %i[online_service_disable permission render].each do |key|
         params[:preferences].delete(key)
       end
       params[:preferences].merge!(setting.preferences)

app/controllers/ticket_articles_controller.rb

@@ -266,7 +266,7 @@ class TicketArticlesController < ApplicationController
 
   def sanitized_disposition
     disposition = params.fetch(:disposition, 'inline')
-    valid_disposition = %w(inline attachment)
+    valid_disposition = %w[inline attachment]
     return disposition if valid_disposition.include?(disposition)
     raise Exceptions::NotAuthorized, "Invalid disposition #{disposition} requested. Only #{valid_disposition.join(', ')} are valid."
   end

app/controllers/tickets_controller.rb

@@ -80,7 +80,7 @@ class TicketsController < ApplicationController
 
     # overwrite params
     if !current_user.permissions?('ticket.agent')
-      [:owner, :owner_id, :customer, :customer_id, :organization, :organization_id, :preferences].each do |key|
+      %i[owner owner_id customer customer_id organization organization_id preferences].each do |key|
         clean_params.delete(key)
       end
       clean_params[:customer_id] = current_user.id
@@ -186,7 +186,7 @@ class TicketsController < ApplicationController
 
     # overwrite params
     if !current_user.permissions?('ticket.agent')
-      [:owner, :owner_id, :customer, :customer_id, :organization, :organization_id, :preferences].each do |key|
+      %i[owner owner_id customer customer_id organization organization_id preferences].each do |key|
         clean_params.delete(key)
       end
     end
@@ -270,7 +270,7 @@ class TicketsController < ApplicationController
                    .limit(6)
 
     # if we do not have open related tickets, search for any tickets
-    if ticket_lists.empty?
+    if ticket_lists.blank?
       ticket_lists = Ticket
                      .where(
                        customer_id: ticket.customer_id,
@@ -389,11 +389,16 @@ class TicketsController < ApplicationController
       params[:limit].to_i = 100
     end
 
+    query = params[:query]
+    if query.respond_to?(:permit!)
+      query = query.permit!.to_h
+    end
+
     # build result list
     tickets = Ticket.search(
+      query: query,
+      condition: params[:condition].to_h,
       limit: params[:limit],
-      query: params[:query],
-      condition: params[:condition],
       current_user: current_user,
     )
 
@@ -435,11 +440,9 @@ class TicketsController < ApplicationController
 
     assets = {}
     ticket_ids = []
-    if tickets
+    tickets&.each do |ticket|
-      tickets.each do |ticket|
+      ticket_ids.push ticket.id
-        ticket_ids.push ticket.id
+      assets = ticket.assets(assets)
-        assets = ticket.assets(assets)
-      end
     end
 
     # return result
@@ -504,7 +507,7 @@ class TicketsController < ApplicationController
 
     # lookup open org tickets
     org_tickets = {}
-    if params[:organization_id] && !params[:organization_id].empty?
+    if params[:organization_id].present?
       organization = Organization.lookup(id: params[:organization_id])
       if !organization
         raise "No such organization with id #{params[:organization_id]}"

app/controllers/time_accountings_controller.rb

@@ -164,7 +164,7 @@ class TimeAccountingsController < ApplicationController
       ]
       result = []
       results.each do |row|
-        row[:ticket].keys.each do |field|
+        row[:ticket].each_key do |field|
           next if row[:ticket][field].blank?
           next if !row[:ticket][field].is_a?(ActiveSupport::TimeWithZone)
 
@@ -250,7 +250,7 @@ class TimeAccountingsController < ApplicationController
       customers[ticket.customer_id][:time_unit] += local_time_unit[:time_unit]
     end
     results = []
-    customers.each do |_customer_id, content|
+    customers.each_value do |content|
       results.push content
     end
 
@@ -326,7 +326,7 @@ class TimeAccountingsController < ApplicationController
       organizations[ticket.organization_id][:time_unit] += local_time_unit[:time_unit]
     end
     results = []
-    organizations.each do |_customer_id, content|
+    organizations.each_value do |content|
       results.push content
     end
 

app/controllers/user_access_token_controller.rb

@@ -14,7 +14,7 @@ class UserAccessTokenController < ApplicationController
     end
     local_permissions = current_user.permissions
     local_permissions_new = {}
-    local_permissions.each do |key, _value|
+    local_permissions.each_key do |key|
       keys = Object.const_get('Permission').with_parents(key)
       keys.each do |local_key|
         next if local_permissions_new.key?([local_key])

app/controllers/user_devices_controller.rb

@@ -8,7 +8,7 @@ class UserDevicesController < ApplicationController
     devices_full = []
     devices.each do |device|
       attributes = device.attributes
-      if device.location_details['city_name'] && !device.location_details['city_name'].empty?
+      if device.location_details['city_name'].present?
         attributes['location'] += ", #{device.location_details['city_name']}"
       end
       attributes.delete('created_at')

app/controllers/users_controller.rb

@@ -1,7 +1,7 @@
 # Copyright (C) 2012-2016 Zammad Foundation, http://zammad-foundation.org/
 
 class UsersController < ApplicationController
-  prepend_before_action :authentication_check, except: [:create, :password_reset_send, :password_reset_verify, :image]
+  prepend_before_action :authentication_check, except: %i[create password_reset_send password_reset_verify image]
   prepend_before_action :authentication_check_only, only: [:create]
 
   # @path       [GET] /users
@@ -145,7 +145,7 @@ class UsersController < ApplicationController
       group_ids = []
       role_ids  = []
       if count <= 2
-        Role.where(name: %w(Admin Agent)).each do |role|
+        Role.where(name: %w[Admin Agent]).each do |role|
           role_ids.push role.id
         end
         Group.all().each do |group|
@@ -363,12 +363,17 @@ class UsersController < ApplicationController
       params[:limit].to_i = 500
     end
 
+    query = params[:query]
+    if query.respond_to?(:permit!)
+      query = query.permit!.to_h
+    end
+
     query_params = {
-      query: params[:query],
+      query: query,
       limit: params[:limit],
       current_user: current_user,
     }
-    [:role_ids, :permissions].each do |key|
+    %i[role_ids permissions].each do |key|
       next if params[key].blank?
       query_params[key] = params[key]
     end
@@ -1046,7 +1051,7 @@ curl http://localhost/api/v1/users/avatar -v -u #{login}:#{password} -H "Content
   def permission_check_by_permission(params)
     return true if current_user.permissions?('admin.user')
 
-    %i(role_ids roles).each do |key|
+    %i[role_ids roles].each do |key|
       next if !params[key]
       if current_user.permissions?('ticket.agent')
         params.delete(key)
@@ -1059,7 +1064,7 @@ curl http://localhost/api/v1/users/avatar -v -u #{login}:#{password} -H "Content
       params[:role_ids] = Role.signup_role_ids
     end
 
-    %i(group_ids groups).each do |key|
+    %i[group_ids groups].each do |key|
       next if !params[key]
       if current_user.permissions?('ticket.agent')
         params.delete(key)

app/models/activity_stream.rb

@@ -99,7 +99,7 @@ return all activity entries of an user
     permission_ids = user.permissions_with_child_ids
     group_ids = user.group_ids_access('read')
 
-    stream = if group_ids.empty?
+    stream = if group_ids.blank?
                ActivityStream.where('(permission_id IN (?) AND group_id is NULL)', permission_ids)
                              .order('created_at DESC, id DESC')
                              .limit(limit)

app/models/application_model/can_assets.rb

@@ -33,7 +33,7 @@ returns
 
     return data if !self['created_by_id'] && !self['updated_by_id']
     app_model_user = User.to_app_model
-    %w(created_by_id updated_by_id).each do |local_user_id|
+    %w[created_by_id updated_by_id].each do |local_user_id|
       next if !self[ local_user_id ]
       next if data[ app_model_user ] && data[ app_model_user ][ self[ local_user_id ] ]
       user = User.lookup(id: self[ local_user_id ])

app/models/application_model/can_associations.rb

@@ -109,7 +109,7 @@ returns
     return cache if cache
 
     attributes = self.attributes
-    relevant   = %i(has_and_belongs_to_many has_many)
+    relevant   = %i[has_and_belongs_to_many has_many]
     eager_load = []
     pluck      = []
     keys       = []
@@ -180,7 +180,7 @@ returns
           next if !item[:name]
           attributes[assoc.name.to_s].push item[:name]
         end
-        if ref.count.positive? && attributes[assoc.name.to_s].empty?
+        if ref.count.positive? && attributes[assoc.name.to_s].blank?
           attributes.delete(assoc.name.to_s)
         end
         next
@@ -216,7 +216,7 @@ returns
 
   def filter_attributes(attributes)
     # remove forbitten attributes
-    %w(password token tokens token_ids).each do |item|
+    %w[password token tokens token_ids].each do |item|
       attributes.delete(item)
     end
   end
@@ -237,7 +237,7 @@ returns
   def association_id_validation(attribute_id, value)
     return true if value.nil?
 
-    attributes.each do |key, _value|
+    attributes.each_key do |key|
       next if key != attribute_id
 
       # check if id is assigned
@@ -339,16 +339,15 @@ returns
           class_object = assoc.klass
           lookup = nil
           if class_object == User
-            if value.instance_of?(String)
+            if !value.instance_of?(String)
-              if !lookup
-                lookup = class_object.lookup(login: value)
-              end
-              if !lookup
-                lookup = class_object.lookup(email: value)
-              end
-            else
               raise ArgumentError, "String is needed as ref value #{value.inspect} for '#{assoc_name}'"
             end
+            if !lookup
+              lookup = class_object.lookup(login: value)
+            end
+            if !lookup
+              lookup = class_object.lookup(email: value)
+            end
           else
             lookup = class_object.lookup(name: value)
           end
@@ -367,7 +366,7 @@ returns
         end
 
         next if !value.instance_of?(Array)
-        next if value.empty?
+        next if value.blank?
         next if !value[0].instance_of?(String)
 
         # handle _ids values
@@ -383,16 +382,15 @@ returns
         value.each do |item|
           lookup = nil
           if class_object == User
-            if item.instance_of?(String)
+            if !item.instance_of?(String)
-              if !lookup
-                lookup = class_object.lookup(login: item)
-              end
-              if !lookup
-                lookup = class_object.lookup(email: item)
-              end
-            else
               raise ArgumentError, "String is needed in array ref as ref value #{value.inspect} for '#{assoc_name}'"
             end
+            if !lookup
+              lookup = class_object.lookup(login: item)
+            end
+            if !lookup
+              lookup = class_object.lookup(email: item)
+            end
           else
             lookup = class_object.lookup(name: item)
           end

app/models/application_model/can_cleanup_param.rb

@@ -43,7 +43,7 @@ returns
 
       # only use object attributes
       clean_params = {}
-      new.attributes.each do |attribute, _value|
+      new.attributes.each_key do |attribute|
         next if !data.key?(attribute.to_sym)
 
         # check reference records, referenced by _id attributes
@@ -80,7 +80,7 @@ returns
     def filter_unused_params(data)
 
       # we do want to set this via database
-      [:action, :controller, :updated_at, :created_at, :updated_by_id, :created_by_id, :updated_by, :created_by].each do |key|
+      %i[action controller updated_at created_at updated_by_id created_by_id updated_by created_by].each do |key|
         data.delete(key)
       end
 

app/models/application_model/can_creates_and_updates.rb

@@ -123,8 +123,8 @@ returns
           return record
         end
         record = new(data)
-        record.save
+        record.save!
-        return record
+        record
       elsif data[:name]
 
         # do lookup with == to handle case insensitive databases
@@ -140,8 +140,8 @@ returns
           end
         end
         record = new(data)
-        record.save
+        record.save!
-        return record
+        record
       elsif data[:login]
 
         # do lookup with == to handle case insensitive databases
@@ -157,8 +157,8 @@ returns
           end
         end
         record = new(data)
-        record.save
+        record.save!
-        return record
+        record
       elsif data[:email]
 
         # do lookup with == to handle case insensitive databases
@@ -174,8 +174,8 @@ returns
           end
         end
         record = new(data)
-        record.save
+        record.save!
-        return record
+        record
       elsif data[:locale]
 
         # do lookup with == to handle case insensitive databases
@@ -191,8 +191,8 @@ returns
           end
         end
         record = new(data)
-        record.save
+        record.save!
-        return record
+        record
       else
         raise ArgumentError, 'Need name, login, email or locale for create_or_update()'
       end

app/models/application_model/can_touch_references.rb

@@ -21,7 +21,7 @@ touch references by params
       object_class = Kernel.const_get(data[:object])
       object = object_class.lookup(id: data[:o_id])
       return if !object
-      object.touch
+      object.touch # rubocop:disable Rails/SkipsModelValidations
     rescue => e
       logger.error e
     end

app/models/application_model/has_attachments.rb

@@ -37,7 +37,7 @@ store attachments for this object
     self.attachments_buffer = attachments
 
     # update if object already exists
-    return if !(id && id.nonzero?)
+    return if !(id&.nonzero?)
 
     attachments_buffer_check
   end

app/models/authorization.rb

@@ -90,7 +90,7 @@ class Authorization < ApplicationModel
 
   def delete_user_cache
     return if !user
-    user.touch
+    user.touch # rubocop:disable Rails/SkipsModelValidations
   end
 
 end

app/models/avatar.rb

@@ -105,16 +105,16 @@ add avatar by url
 
     # fetch image based on http url
     if data[:url].present?
-      if data[:url] =~ /^http/
+      if data[:url].match?(/^http/)
 
         # check if source ist already updated within last 2 minutes
-        if avatar_already_exists && avatar_already_exists.source_url == data[:url]
+        if avatar_already_exists&.source_url == data[:url]
           return if avatar_already_exists.updated_at > 2.minutes.ago
         end
 
         # twitter workaround to get bigger avatar images
         # see also https://dev.twitter.com/overview/general/user-profile-images-and-banners
-        if data[:url] =~ %r{//pbs.twimg.com/}i
+        if data[:url].match?(%r{//pbs.twimg.com/}i)
           data[:url].sub!(/normal\.(png|jpg|gif)$/, 'bigger.\1')
         end
 
@@ -134,10 +134,10 @@ add avatar by url
         end
         logger.info "Fetchd image '#{data[:url]}', http code: #{response.code}"
         mime_type = 'image'
-        if data[:url] =~ /\.png/i
+        if data[:url].match?(/\.png/i)
           mime_type = 'image/png'
         end
-        if data[:url] =~ /\.(jpg|jpeg)/i
+        if data[:url].match?(/\.(jpg|jpeg)/i)
           mime_type = 'image/jpeg'
         end
         if !data[:resize]
@@ -150,10 +150,10 @@ add avatar by url
         data[:full][:mime_type] = mime_type
 
       # try zammad backend to find image based on email
-      elsif data[:url] =~ /@/
+      elsif data[:url].match?(/@/)
 
         # check if source ist already updated within last 3 minutes
-        if avatar_already_exists && avatar_already_exists.source_url == data[:url]
+        if avatar_already_exists&.source_url == data[:url]
           return if avatar_already_exists.updated_at > 2.minutes.ago
         end
 
@@ -170,8 +170,8 @@ add avatar by url
     # check if avatar need to be updated
     if data[:resize].present? && data[:resize][:content].present?
       record[:store_hash] = Digest::MD5.hexdigest(data[:resize][:content])
-      if avatar_already_exists && avatar_already_exists.store_hash == record[:store_hash]
+      if avatar_already_exists&.store_hash == record[:store_hash]
-        avatar_already_exists.touch
+        avatar_already_exists.touch # rubocop:disable Rails/SkipsModelValidations
         return avatar_already_exists
       end
     end

app/models/calendar.rb

@@ -83,11 +83,11 @@ returns
 =end
 
   def self.ical_feeds
-    data = YAML.load_file(Rails.root.join('config/holiday_calendars.yml'))
+    data = YAML.load_file(Rails.root.join('config', 'holiday_calendars.yml'))
     url  = data['url']
 
     data['countries'].map do |country, domain|
-      [(url % { domain: domain }), country]
+      [format(url, domain: domain), country]
     end.to_h
   end
 
@@ -210,7 +210,7 @@ returns
   end
 
   def self.fetch_parse(location)
-    if location =~ /^http/i
+    if location.match?(/^http/i)
       result = UserAgent.get(location)
       if !result.success?
         raise result.error
@@ -257,7 +257,7 @@ returns
     end
 
     # ignore daylight saving time entries
-    return if comment =~ /(daylight saving|sommerzeit|summertime)/i
+    return if comment.match?(/(daylight saving|sommerzeit|summertime)/i)
     [day, comment]
   end
 

app/models/channel.rb

@@ -50,7 +50,6 @@ fetch one account
     end
 
     begin
-
       # we need to require each channel backend individually otherwise we get a
       # 'warning: toplevel constant Twitter referenced by Channel::Driver::Twitter' error e.g.
       # so we have to convert the channel name to the filename via Rails String.underscore
@@ -94,7 +93,6 @@ stream instance of account
     adapter = options[:adapter]
 
     begin
-
       # we need to require each channel backend individually otherwise we get a
       # 'warning: toplevel constant Twitter referenced by Channel::Driver::Twitter' error e.g.
       # so we have to convert the channel name to the filename via Rails String.underscore
@@ -264,7 +262,6 @@ send via account
     result = nil
 
     begin
-
       # we need to require each channel backend individually otherwise we get a
       # 'warning: toplevel constant Twitter referenced by Channel::Driver::Twitter' error e.g.
       # so we have to convert the channel name to the filename via Rails String.underscore

app/models/channel/assets.rb

@@ -40,7 +40,7 @@ returns
           end
         end
         if !access
-          %w(inbound outbound).each do |key|
+          %w[inbound outbound].each do |key|
             if attributes['options'] && attributes['options'][key] && attributes['options'][key]['options']
               attributes['options'][key]['options'].delete('password')
             end
@@ -51,7 +51,7 @@ returns
       end
 
       return data if !self['created_by_id'] && !self['updated_by_id']
-      %w(created_by_id updated_by_id).each do |local_user_id|
+      %w[created_by_id updated_by_id].each do |local_user_id|
         next if !self[ local_user_id ]
         next if data[ User.to_app_model ] && data[ User.to_app_model ][ self[ local_user_id ] ]
         user = User.lookup(id: self[ local_user_id ])

app/models/channel/driver/facebook.rb

@@ -60,8 +60,7 @@ class Channel::Driver::Facebook
     true
   end
 
-  def disconnect
+  def disconnect; end
-  end
 
 =begin
 

app/models/channel/driver/imap.rb

@@ -104,7 +104,7 @@ example
     # sort messages by date on server (if not supported), if not fetch messages via search (first in, first out)
     filter = ['ALL']
     if keep_on_server && check_type != 'check' && check_type != 'verify'
-      filter = %w(NOT SEEN)
+      filter = %w[NOT SEEN]
     end
     begin
       message_ids = @imap.sort(['DATE'], filter, 'US-ASCII')
@@ -254,7 +254,7 @@ returns
 
     # verify if message is already imported via same channel, if not, import it again
     ticket = article.ticket
-    if ticket && ticket.preferences && ticket.preferences[:channel_id].present? && channel.present?
+    if ticket&.preferences && ticket.preferences[:channel_id].present? && channel.present?
       return false if ticket.preferences[:channel_id] != channel[:id]
     end
 

app/models/channel/driver/smtp.rb

@@ -27,7 +27,7 @@ class Channel::Driver::Smtp
     return if Setting.get('import_mode')
 
     # set smtp defaults
-    if !options.key?(:port) || options[:port].empty?
+    if !options.key?(:port) || options[:port].blank?
       options[:port] = 25
     end
     if !options.key?(:ssl)

app/models/channel/driver/twitter.rb

@@ -119,8 +119,8 @@ returns
   end
 
   def disconnect
-    @stream_client.disconnect if @stream_client
+    @stream_client&.disconnect
-    @rest_client.disconnect if @rest_client
+    @rest_client&.disconnect
   end
 
 =begin
@@ -203,12 +203,11 @@ returns
         stream_start
       rescue Twitter::Error::Unauthorized => e
         Rails.logger.info "Unable to stream, try #{loop_count}, error #{e.inspect}"
-        if loop_count < 2
+        if loop_count >= 2
-          Rails.logger.info "wait for #{sleep_on_unauthorized} sec. and try it again"
-          sleep sleep_on_unauthorized
-        else
           raise "Unable to stream, try #{loop_count}, error #{e.inspect}"
         end
+        Rails.logger.info "wait for #{sleep_on_unauthorized} sec. and try it again"
+        sleep sleep_on_unauthorized
       end
     end
   end
@@ -233,7 +232,7 @@ returns
       filter[:replies] = 'all'
     end
 
-    return if filter.empty?
+    return if filter.blank?
 
     @stream_client.client.user(filter) do |tweet|
       next if tweet.class != Twitter::Tweet && tweet.class != Twitter::DirectMessage
@@ -258,11 +257,9 @@ returns
       # check if it's mention
       if sync['mentions'] && sync['mentions']['group_id'].present?
         hit = false
-        if tweet.user_mentions
+        tweet.user_mentions&.each do |user|
-          tweet.user_mentions.each do |user|
+          if user.id.to_s == @channel.options['user']['id'].to_s
-            if user.id.to_s == @channel.options['user']['id'].to_s
+            hit = true
-              hit = true
-            end
           end
         end
         if hit
@@ -299,7 +296,7 @@ returns
           next if item['term'].blank?
           next if item['term'] == '#'
           next if item['group_id'].blank?
-          if body =~ /#{item['term']}/
+          if body.match?(/#{item['term']}/)
             hit = item
           end
         end

app/models/channel/email_build.rb

@@ -69,7 +69,7 @@ module Channel::EmailBuild
     end
 
     # build email without any attachments
-    if !html_alternative && ( !attr[:attachments] || attr[:attachments].empty? )
+    if !html_alternative && attr[:attachments].blank?
       mail.content_type 'text/plain; charset=UTF-8'
       mail.body attr[:body]
       return mail
@@ -84,19 +84,17 @@ module Channel::EmailBuild
       html_container.add_part html_alternative
 
       # place to add inline attachments related to html alternative
-      if attr[:attachments]
+      attr[:attachments]&.each do |attachment|
-        attr[:attachments].each do |attachment|
+        next if attachment.class == Hash
-          next if attachment.class == Hash
+        next if attachment.preferences['Content-ID'].blank?
-          next if attachment.preferences['Content-ID'].empty?
+        attachment = Mail::Part.new do
-          attachment = Mail::Part.new do
+          content_type attachment.preferences['Content-Type']
-            content_type attachment.preferences['Content-Type']
+          content_id "<#{attachment.preferences['Content-ID']}>"
-            content_id "<#{attachment.preferences['Content-ID']}>"
+          content_disposition attachment.preferences['Content-Disposition'] || 'inline'
-            content_disposition attachment.preferences['Content-Disposition'] || 'inline'
+          content_transfer_encoding 'binary'
-            content_transfer_encoding 'binary'
+          body attachment.content.force_encoding('BINARY')
-            body attachment.content.force_encoding('BINARY')
-          end
-          html_container.add_part attachment
         end
+        html_container.add_part attachment
       end
       alternative_bodies.add_part html_container
     end
@@ -104,23 +102,21 @@ module Channel::EmailBuild
     mail.add_part alternative_bodies
 
     # add attachments
-    if attr[:attachments]
+    attr[:attachments]&.each do |attachment|
-      attr[:attachments].each do |attachment|
+      if attachment.class == Hash
-        if attachment.class == Hash
+        attachment['content-id'] = nil
-          attachment['content-id'] = nil
+        mail.attachments[ attachment[:filename] ] = attachment
-          mail.attachments[ attachment[:filename] ] = attachment
+      else
-        else
+        next if attachment.preferences['Content-ID'].present?
-          next if !attachment.preferences['Content-ID'].empty?
+        filename = attachment.filename
-          filename = attachment.filename
+        encoded_filename = Mail::Encodings.decode_encode filename, :encode
-          encoded_filename = Mail::Encodings.decode_encode filename, :encode
+        disposition = attachment.preferences['Content-Disposition'] || 'attachment'
-          disposition = attachment.preferences['Content-Disposition'] || 'attachment'
+        content_type = attachment.preferences['Content-Type'] || 'application/octet-stream'
-          content_type = attachment.preferences['Content-Type'] || 'application/octet-stream'
+        mail.attachments[attachment.filename] = {
-          mail.attachments[attachment.filename] = {
+          content_disposition: "#{disposition}; filename=\"#{encoded_filename}\"",
-            content_disposition: "#{disposition}; filename=\"#{encoded_filename}\"",
+          content_type: "#{content_type}; filename=\"#{encoded_filename}\"",
-            content_type: "#{content_type}; filename=\"#{encoded_filename}\"",
+          content: attachment.content
-            content: attachment.content
+        }
-          }
-        end
       end
     end
     mail
@@ -137,7 +133,7 @@ returns
 =end
 
   def self.recipient_line(realname, email)
-    return "#{realname} <#{email}>" if realname =~ /^[A-z]+$/i
+    return "#{realname} <#{email}>" if realname.match?(/^[A-z]+$/i)
     "\"#{realname.gsub('"', '\"')}\" <#{email}>"
   end
 
@@ -154,7 +150,7 @@ Check if string is a complete html document. If not, add head and css styles.
     # apply mail client fixes
     html = Channel::EmailBuild.html_mail_client_fixes(html)
 
-    return html if html =~ /<html>/i
+    return html if html.match?(/<html>/i)
 
     # use block form because variable html could contain backslashes and e. g. '\1' that
     # must not be handled as back-references for regular expressions

app/models/channel/email_parser.rb

@@ -94,7 +94,7 @@ class Channel::EmailParser
     # verify content, ignore recipients with non email address
     ['to', 'cc', 'delivered-to', 'x-original-to', 'envelope-to'].each do |field|
       next if data[field.to_sym].blank?
-      next if data[field.to_sym] =~ /@/
+      next if data[field.to_sym].match?(/@/)
       data[field.to_sym] = ''
     end
 
@@ -146,7 +146,7 @@ class Channel::EmailParser
     if mail.multipart?
 
       # html attachment/body may exists and will be converted to strict html
-      if mail.html_part && mail.html_part.body
+      if mail.html_part&.body
         data[:body] = mail.html_part.body.to_s
         data[:body] = Encode.conv(mail.html_part.charset.to_s, data[:body])
         data[:body] = data[:body].html2html_strict.to_s.force_encoding('utf-8')
@@ -196,17 +196,15 @@ class Channel::EmailParser
       end
 
       # get attachments
-      if mail.parts
+      mail.parts&.each do |part|
-        mail.parts.each do |part|
 
-          # protect process to work fine with spam emails, see test/fixtures/mail15.box
+        # protect process to work fine with spam emails, see test/fixtures/mail15.box
-          begin
+        begin
-            attachs = _get_attachment(part, data[:attachments], mail)
+          attachs = _get_attachment(part, data[:attachments], mail)
-            data[:attachments].concat(attachs)
+          data[:attachments].concat(attachs)
-          rescue
+        rescue
-            attachs = _get_attachment(part, data[:attachments], mail)
+          attachs = _get_attachment(part, data[:attachments], mail)
-            data[:attachments].concat(attachs)
+          data[:attachments].concat(attachs)
-          end
         end
       end
 
@@ -306,10 +304,10 @@ class Channel::EmailParser
     end
 
     # ignore text/plain attachments - already shown in view
-    return [] if mail.text_part && mail.text_part.body.to_s == file.body.to_s
+    return [] if mail.text_part&.body.to_s == file.body.to_s
 
     # ignore text/html - html part, already shown in view
-    return [] if mail.html_part && mail.html_part.body.to_s == file.body.to_s
+    return [] if mail.html_part&.body.to_s == file.body.to_s
 
     # get file preferences
     headers_store = {}
@@ -376,7 +374,7 @@ class Channel::EmailParser
 
     # generate file name based on content type
     if filename.blank? && headers_store['Content-Type'].present?
-      if headers_store['Content-Type'] =~ %r{^message/rfc822}i
+      if headers_store['Content-Type'].match?(%r{^message/rfc822}i)
         begin
           parser = Channel::EmailParser.new
           mail_local = parser.parse(file.body.to_s)
@@ -406,13 +404,13 @@ class Channel::EmailParser
       if filename.blank?
         map = {
           'message/delivery-status': ['txt', 'delivery-status'],
-          'text/plain': %w(txt document),
+          'text/plain': %w[txt document],
-          'text/html': %w(html document),
+          'text/html': %w[html document],
-          'video/quicktime': %w(mov video),
+          'video/quicktime': %w[mov video],
-          'image/jpeg': %w(jpg image),
+          'image/jpeg': %w[jpg image],
-          'image/jpg': %w(jpg image),
+          'image/jpg': %w[jpg image],
-          'image/png': %w(png image),
+          'image/png': %w[png image],
-          'image/gif': %w(gif image),
+          'image/gif': %w[gif image],
         }
         map.each do |type, ext|
           next if headers_store['Content-Type'] !~ /^#{Regexp.quote(type)}/i
@@ -454,12 +452,12 @@ class Channel::EmailParser
     end
 
     # get mime type
-    if file.header[:content_type] && file.header[:content_type].string
+    if file.header[:content_type]&.string
       headers_store['Mime-Type'] = file.header[:content_type].string
     end
 
     # get charset
-    if file.header && file.header.charset
+    if file.header&.charset
       headers_store['Charset'] = file.header.charset
     end
 
@@ -503,9 +501,8 @@ returns
 
     _process(channel, msg)
   rescue => e
-
     # store unprocessable email for bug reporting
-    path = "#{Rails.root}/tmp/unprocessable_mail/"
+    path = Rails.root.join('tmp', 'unprocessable_mail')
     FileUtils.mkpath path
     md5 = Digest::MD5.hexdigest(msg)
     filename = "#{path}/#{md5}.eml"
@@ -532,7 +529,7 @@ returns
     Setting.where(area: 'Postmaster::PreFilter').order(:name).each do |setting|
       filters[setting.name] = Kernel.const_get(Setting.get(setting.name))
     end
-    filters.each do |_prio, backend|
+    filters.each_value do |backend|
       Rails.logger.debug "run postmaster pre filter #{backend}"
       begin
         backend.run(channel, mail)
@@ -663,16 +660,14 @@ returns
         article.save_as_raw(msg)
 
         # store attachments
-        if mail[:attachments]
+        mail[:attachments]&.each do |attachment|
-          mail[:attachments].each do |attachment|
+          Store.add(
-            Store.add(
+            object: 'Ticket::Article',
-              object: 'Ticket::Article',
+            o_id: article.id,
-              o_id: article.id,
+            data: attachment[:data],
-              data: attachment[:data],
+            filename: attachment[:filename],
-              filename: attachment[:filename],
+            preferences: attachment[:preferences]
-              preferences: attachment[:preferences]
+          )
-            )
-          end
         end
       end
     end
@@ -682,7 +677,7 @@ returns
     Setting.where(area: 'Postmaster::PostFilter').order(:name).each do |setting|
       filters[setting.name] = Kernel.const_get(Setting.get(setting.name))
     end
-    filters.each do |_prio, backend|
+    filters.each_value do |backend|
       Rails.logger.debug "run postmaster post filter #{backend}"
       begin
         backend.run(channel, mail, ticket, article, session_user)
@@ -765,7 +760,7 @@ returns
   def set_attributes_by_x_headers(item_object, header_name, mail, suffix = false)
 
     # loop all x-zammad-header-* headers
-    item_object.attributes.each do |key, _value|
+    item_object.attributes.each_key do |key|
 
       # ignore read only attributes
       next if key == 'updated_by_id'
@@ -862,9 +857,9 @@ module Mail
           .+?(?=\=\?|$)                    # Plain String
           )/xmi).map do |matches|
             string, method = *matches
-            if    method == 'b' || method == 'B'
+            if    method == 'b' || method == 'B' # rubocop:disable Style/MultipleComparison
               b_value_decode(string)
-            elsif method == 'q' || method == 'Q'
+            elsif method == 'q' || method == 'Q' # rubocop:disable Style/MultipleComparison
               q_value_decode(string)
             else
               string

app/models/channel/filter/auto_response_check.rb

@@ -25,7 +25,7 @@ module Channel::Filter::AutoResponseCheck
     message_id = mail[ 'message_id'.to_sym ]
     if message_id
       fqdn = Setting.get('fqdn')
-      return if message_id =~ /@#{Regexp.quote(fqdn)}/i
+      return if message_id.match?(/@#{Regexp.quote(fqdn)}/i)
     end
 
     mail[ 'x-zammad-send-auto-response'.to_sym ] = true

app/models/channel/filter/bounce_delivery_permanent_failed.rb

@@ -28,7 +28,7 @@ module Channel::Filter::BounceDeliveryPermanentFailed
       # get recipient of origin article, if only one - mark this user to not sent notifications anymore
       recipients = []
       if article.sender.name == 'System' || article.sender.name == 'Agent'
-        %w(to cc).each do |line|
+        %w[to cc].each do |line|
           next if article[line].blank?
           recipients = []
           begin

app/models/channel/filter/follow_up_check.rb

@@ -104,5 +104,6 @@ module Channel::Filter::FollowUpCheck
       end
     end
 
+    true
   end
 end

app/models/channel/filter/identify_sender.rb

@@ -30,7 +30,7 @@ module Channel::Filter::IdentifySender
         # get first recipient and set customer
         begin
           to = 'raw-to'.to_sym
-          if mail[to] && mail[to].addrs
+          if mail[to]&.addrs
             items = mail[to].addrs
             items.each do |item|
 
@@ -83,6 +83,8 @@ module Channel::Filter::IdentifySender
     if session_user
       mail[ 'x-zammad-session-user-id'.to_sym ] = session_user.id
     end
+
+    true
   end
 
   # create to and cc user
@@ -159,7 +161,7 @@ module Channel::Filter::IdentifySender
     role_ids = Role.signup_role_ids
 
     # fillup
-    %w(firstname lastname).each do |item|
+    %w[firstname lastname].each do |item|
       if data[item.to_sym].nil?
         data[item.to_sym] = ''
       end

app/models/channel/filter/match/email_regex.rb

@@ -9,12 +9,12 @@ module Channel::Filter::Match::EmailRegex
 
     if regexp == false
       match_rule_quoted = Regexp.quote(match_rule).gsub(/\\\*/, '.*')
-      return true if value =~ /#{match_rule_quoted}/i
+      return true if value.match?(/#{match_rule_quoted}/i)
       return false
     end
 
     begin
-      return true if value =~ /#{match_rule}/i
+      return true if value.match?(/#{match_rule}/i)
       return false
     rescue => e
       message = "Can't use regex '#{match_rule}' on '#{value}': #{e.message}"

app/models/channel/filter/monitoring_base.rb

@@ -36,9 +36,7 @@ class Channel::Filter::MonitoringBase
         key = key.downcase
       end
       value = $2
-      if value
+      value&.strip!
-        value.strip!
-      end
       result[key] = value
     end
 
@@ -70,9 +68,9 @@ class Channel::Filter::MonitoringBase
 
     # possible event types https://mmonit.com/monit/documentation/#Setting-an-event-filter
     if result['state'].blank?
-      result['state'] = if mail[:body] =~ /\s(done|recovery|succeeded|bytes\sok|packets\sok)\s/
+      result['state'] = if mail[:body].match?(/\s(done|recovery|succeeded|bytes\sok|packets\sok)\s/)
                           'OK'
-                        elsif mail[:body] =~ /(instance\schanged\snot|Link\sup|Exists|Saturation\sok|Speed\sok)/
+                        elsif mail[:body].match?(/(instance\schanged\snot|Link\sup|Exists|Saturation\sok|Speed\sok)/)
                           'OK'
                         else
                           'CRITICAL'
@@ -132,5 +130,6 @@ class Channel::Filter::MonitoringBase
       return true
     end
 
+    true
   end
 end

app/models/channel/filter/out_of_office_check.rb

@@ -18,12 +18,12 @@ module Channel::Filter::OutOfOfficeCheck
     if mail[ 'auto-submitted'.to_sym ]
 
       # check zimbra out of office characteristics
-      if mail[ 'auto-submitted'.to_sym ] =~ /vacation/i
+      if mail[ 'auto-submitted'.to_sym ].match?(/vacation/i)
         mail[ 'x-zammad-out-of-office'.to_sym ] = true
       end
 
       # check cloud out of office characteristics
-      if mail[ 'auto-submitted'.to_sym ] =~ /auto-replied;\sowner-email=/i
+      if mail[ 'auto-submitted'.to_sym ].match?(/auto-replied;\sowner-email=/i)
         mail[ 'x-zammad-out-of-office'.to_sym ] = true
       end
 
@@ -35,6 +35,7 @@ module Channel::Filter::OutOfOfficeCheck
       return
     end
 
+    true
   end
 
 end

app/models/channel/filter/trusted.rb

@@ -7,7 +7,7 @@ module Channel::Filter::Trusted
 
     # check if trust x-headers
     if !channel[:trusted]
-      mail.each do |key, _value|
+      mail.each_key do |key|
         next if key !~ /^x-zammad/i
         mail.delete(key)
       end

app/models/chat.rb

@@ -9,7 +9,7 @@ class Chat < ApplicationModel
 
     # reconnect
     if session_id
-      chat_session = Chat::Session.find_by(session_id: session_id, state: %w(waiting running))
+      chat_session = Chat::Session.find_by(session_id: session_id, state: %w[waiting running])
 
       if chat_session
         if chat_session.state == 'running'
@@ -126,7 +126,7 @@ class Chat < ApplicationModel
   end
 
   def self.active_chat_count
-    Chat::Session.where(state: %w(waiting running)).count
+    Chat::Session.where(state: %w[waiting running]).count
   end
 
   def self.available_agents(diff = 2.minutes)
@@ -153,7 +153,7 @@ class Chat < ApplicationModel
 
   def self.seads_total(diff = 2.minutes)
     total = 0
-    available_agents(diff).each do |_user_id, concurrent|
+    available_agents(diff).each_value do |concurrent|
       total += concurrent
     end
     total

app/models/chat/agent.rb

@@ -5,7 +5,7 @@ class Chat::Agent < ApplicationModel
   end
 
   def active_chat_count
-    Chat::Session.where(state: %w(waiting running), user_id: updated_by_id).count
+    Chat::Session.where(state: %w[waiting running], user_id: updated_by_id).count
   end
 
   def self.state(user_id, state = nil)

app/models/concerns/can_seed.rb

@@ -17,7 +17,7 @@ module CanSeed
     end
 
     def seedfile
-      "#{Rails.root}/db/seeds/#{name.pluralize.underscore.tr('/', '_')}.rb"
+      Rails.root.join('db', 'seeds', "#{name.pluralize.underscore.tr('/', '_')}.rb").to_s
     end
   end
 end

app/models/concerns/has_activity_stream_log.rb

@@ -35,12 +35,11 @@ log object update activity stream, if configured - will be executed automaticall
     return true if !saved_changes?
 
     ignored_attributes  = self.class.instance_variable_get(:@activity_stream_attributes_ignored) || []
-    ignored_attributes += %i(created_at updated_at created_by_id updated_by_id)
+    ignored_attributes += %i[created_at updated_at created_by_id updated_by_id]
 
     log = false
-    saved_changes.each do |key, _value|
+    saved_changes.each_key do |key|
       next if ignored_attributes.include?(key.to_sym)
-
       log = true
     end
     return true if !log

app/models/concerns/has_history.rb

@@ -40,11 +40,9 @@ log object update history with all updated attributes, if configured - will be e
 
     # new record also triggers update, so ignore new records
     changes = saved_changes
-    if history_changes_last_done
+    history_changes_last_done&.each do |key, value|
-      history_changes_last_done.each do |key, value|
+      if changes.key?(key) && changes[key] == value
-        if changes.key?(key) && changes[key] == value
+        changes.delete(key)
-          changes.delete(key)
-        end
       end
     end
     self.history_changes_last_done = changes
@@ -53,7 +51,7 @@ log object update history with all updated attributes, if configured - will be e
     return if changes['id'] && !changes['id'][0]
 
     ignored_attributes  = self.class.instance_variable_get(:@history_attributes_ignored) || []
-    ignored_attributes += %i(created_at updated_at created_by_id updated_by_id)
+    ignored_attributes += %i[created_at updated_at created_by_id updated_by_id]
 
     changes.each do |key, value|
 

app/models/concerns/has_search_index_backend.rb

@@ -84,7 +84,7 @@ returns
 
   def search_index_data
     attributes = {}
-    %w(name note).each do |key|
+    %w[name note].each do |key|
       next if !self[key]
       next if self[key].respond_to?('blank?') && self[key].blank?
       attributes[key] = self[key]

app/models/cti/caller_id.rb

@@ -108,11 +108,11 @@ returns
       # get caller ids
       caller_ids = []
       attributes = record.attributes
-      attributes.each do |_attribute, value|
+      attributes.each_value do |value|
         next if value.class != String
-        next if value.empty?
+        next if value.blank?
         local_caller_ids = Cti::CallerId.extract_numbers(value)
-        next if local_caller_ids.empty?
+        next if local_caller_ids.blank?
         caller_ids = caller_ids.concat(local_caller_ids)
       end
 
@@ -233,23 +233,23 @@ returns
           if user
             comment += user.fullname
           end
-        elsif !record.comment.empty?
+        elsif record.comment.present?
           comment += record.comment
         end
         if record.level == 'known'
-          if !from_comment_known.empty?
+          if from_comment_known.present?
             from_comment_known += ','
           end
           from_comment_known += comment
         else
-          if !from_comment_maybe.empty?
+          if from_comment_maybe.present?
             from_comment_maybe += ','
           end
           from_comment_maybe += comment
         end
       end
-      return [from_comment_known, preferences_known] if !from_comment_known.empty?
+      return [from_comment_known, preferences_known] if from_comment_known.present?
-      return ["maybe #{from_comment_maybe}", preferences_maybe] if !from_comment_maybe.empty?
+      return ["maybe #{from_comment_maybe}", preferences_maybe] if from_comment_maybe.present?
       nil
     end
 

app/models/cti/log.rb

@@ -249,7 +249,7 @@ returns
       assets = {}
       list.each do |item|
         next if !item.preferences
-        %w(from to).each do |direction|
+        %w[from to].each do |direction|
           next if !item.preferences[direction]
           item.preferences[direction].each do |caller_id|
             next if !caller_id['user_id']

app/models/email_address.rb

@@ -47,7 +47,7 @@ check and if channel not exists reset configured channels for email addresses
     return true if email.blank?
     self.email = email.downcase.strip
     raise Exceptions::UnprocessableEntity, 'Invalid email' if email !~ /@/
-    raise Exceptions::UnprocessableEntity, 'Invalid email' if email =~ /\s/
+    raise Exceptions::UnprocessableEntity, 'Invalid email' if email.match?(/\s/)
     true
   end
 

app/models/external_sync.rb

@@ -68,7 +68,7 @@ class ExternalSync < ApplicationModel
         break if !value
 
         storable = value.class.ancestors.any? do |ancestor|
-          %w(String Integer Float Bool Array).include?(ancestor.to_s)
+          %w[String Integer Float Bool Array].include?(ancestor.to_s)
         end
 
         if storable

app/models/job.rb

@@ -78,11 +78,9 @@ job.run(true)
     self.running = true
     save!
 
-    if tickets
+    tickets&.each do |ticket|
-      tickets.each do |ticket|
+      Transaction.execute(disable_notification: disable_notification, reset_user_id: true) do
-        Transaction.execute(disable_notification: disable_notification, reset_user_id: true) do
+        ticket.perform_changes(perform, 'job')
-          ticket.perform_changes(perform, 'job')
-        end
       end
     end
 

app/models/job/assets.rb

@@ -36,7 +36,7 @@ returns
         data = assets_of_selector('condition', data)
         data = assets_of_selector('perform', data)
       end
-      %w(created_by_id updated_by_id).each do |local_user_id|
+      %w[created_by_id updated_by_id].each do |local_user_id|
         next if !self[ local_user_id ]
         next if data[ User.to_app_model ][ self[ local_user_id ] ]
         user = User.lookup(id: self[ local_user_id ])

app/models/locale.rb

@@ -71,7 +71,7 @@ all:
 
   def self.load_from_file
     version = Version.get
-    file = Rails.root.join("config/locales-#{version}.yml")
+    file = Rails.root.join('config', "locales-#{version}.yml")
     return false if !File.exist?(file)
     data = YAML.load_file(file)
     to_database(data)
@@ -107,7 +107,7 @@ all:
     raise "Can't load locales from #{url}" if !result
     raise "Can't load locales from #{url}: #{result.error}" if !result.success?
 
-    file = Rails.root.join("config/locales-#{version}.yml")
+    file = Rails.root.join('config', "locales-#{version}.yml")
     File.open(file, 'w') do |out|
       YAML.dump(result.data, out)
     end

app/models/object_manager.rb

@@ -11,7 +11,7 @@ list all backend managed object
 =end
 
   def self.list_objects
-    %w(Ticket TicketArticle User Organization Group)
+    %w[Ticket TicketArticle User Organization Group]
   end
 
 =begin
@@ -23,7 +23,7 @@ list all frontend managed object
 =end
 
   def self.list_frontend_objects
-    %w(Ticket User Organization Group)
+    %w[Ticket User Organization Group]
   end
 
 end

app/models/object_manager/attribute.rb

@@ -279,7 +279,7 @@ possible types
 
       # if data_option has changed, store it for next migration
       if !force
-        [:name, :display, :data_type, :position, :active].each do |key|
+        %i[name display data_type position active].each do |key|
           next if record[key] == data[key]
           data[:to_config] = true
           break
@@ -441,7 +441,7 @@ returns:
         tag: item.data_type,
         #:null     => item.null,
       }
-      if item.data_option[:permission] && item.data_option[:permission].any?
+      if item.data_option[:permission]&.any?
         next if !user
         hint = false
         item.data_option[:permission].each do |permission|
@@ -459,7 +459,7 @@ returns:
           permission_options.each do |permission, options|
             if permission == '-all-'
               data[:screen][screen] = options
-            elsif user && user.permissions?(permission)
+            elsif user&.permissions?(permission)
               data[:screen][screen] = options
             end
           end
@@ -535,7 +535,7 @@ returns
 =end
 
   def self.pending_migration?
-    return false if migrations.empty?
+    return false if migrations.blank?
     true
   end
 
@@ -601,21 +601,21 @@ to send no browser reload event, pass false
       end
 
       data_type = nil
-      if attribute.data_type =~ /^input|select|tree_select|richtext|textarea|checkbox$/
+      if attribute.data_type.match?(/^input|select|tree_select|richtext|textarea|checkbox$/)
         data_type = :string
-      elsif attribute.data_type =~ /^integer|user_autocompletion$/
+      elsif attribute.data_type.match?(/^integer|user_autocompletion$/)
         data_type = :integer
-      elsif attribute.data_type =~ /^boolean|active$/
+      elsif attribute.data_type.match?(/^boolean|active$/)
         data_type = :boolean
-      elsif attribute.data_type =~ /^datetime$/
+      elsif attribute.data_type.match?(/^datetime$/)
         data_type = :datetime
-      elsif attribute.data_type =~ /^date$/
+      elsif attribute.data_type.match?(/^date$/)
         data_type = :date
       end
 
       # change field
       if model.column_names.include?(attribute.name)
-        if attribute.data_type =~ /^input|select|tree_select|richtext|textarea|checkbox$/
+        if attribute.data_type.match?(/^input|select|tree_select|richtext|textarea|checkbox$/)
           ActiveRecord::Migration.change_column(
             model.table_name,
             attribute.name,
@@ -623,7 +623,7 @@ to send no browser reload event, pass false
             limit: attribute.data_option[:maxlength],
             null: true
           )
-        elsif attribute.data_type =~ /^integer|user_autocompletion|datetime|date$/
+        elsif attribute.data_type.match?(/^integer|user_autocompletion|datetime|date$/)
           ActiveRecord::Migration.change_column(
             model.table_name,
             attribute.name,
@@ -631,7 +631,7 @@ to send no browser reload event, pass false
             default: attribute.data_option[:default],
             null: true
           )
-        elsif attribute.data_type =~ /^boolean|active$/
+        elsif attribute.data_type.match?(/^boolean|active$/)
           ActiveRecord::Migration.change_column(
             model.table_name,
             attribute.name,
@@ -654,7 +654,7 @@ to send no browser reload event, pass false
       end
 
       # create field
-      if attribute.data_type =~ /^input|select|tree_select|richtext|textarea|checkbox$/
+      if attribute.data_type.match?(/^input|select|tree_select|richtext|textarea|checkbox$/)
         ActiveRecord::Migration.add_column(
           model.table_name,
           attribute.name,
@@ -662,7 +662,7 @@ to send no browser reload event, pass false
           limit: attribute.data_option[:maxlength],
           null: true
         )
-      elsif attribute.data_type =~ /^integer|user_autocompletion$/
+      elsif attribute.data_type.match?(/^integer|user_autocompletion$/)
         ActiveRecord::Migration.add_column(
           model.table_name,
           attribute.name,
@@ -670,7 +670,7 @@ to send no browser reload event, pass false
           default: attribute.data_option[:default],
           null: true
         )
-      elsif attribute.data_type =~ /^boolean|active$/
+      elsif attribute.data_type.match?(/^boolean|active$/)
         ActiveRecord::Migration.add_column(
           model.table_name,
           attribute.name,
@@ -678,7 +678,7 @@ to send no browser reload event, pass false
           default: attribute.data_option[:default],
           null: true
         )
-      elsif attribute.data_type =~ /^datetime|date$/
+      elsif attribute.data_type.match?(/^datetime|date$/)
         ActiveRecord::Migration.add_column(
           model.table_name,
           attribute.name,
@@ -727,26 +727,20 @@ to send no browser reload event, pass false
 
   def check_name
     return if !name
-    if name =~ /_(id|ids)$/i || name =~ /^id$/i
+
-      raise 'Name can\'t get used, *_id and *_ids are not allowed'
+    raise 'Name can\'t get used, *_id and *_ids are not allowed' if name.match?(/_(id|ids)$/i) || name.match?(/^id$/i)
-    elsif name =~ /\s/
+    raise 'Spaces in name are not allowed' if name.match?(/\s/)
-      raise 'Spaces in name are not allowed'
+    raise 'Only letters from a-z, numbers from 0-9, and _ are allowed' if !name.match?(/^[a-z0-9_]+$/)
-    elsif name !~ /^[a-z0-9_]+$/
+    raise 'At least one letters is needed' if !name.match?(/[a-z]/)
-      raise 'Only letters from a-z, numbers from 0-9, and _ are allowed'
-    elsif name !~ /[a-z]/
-      raise 'At least one letters is needed'
-    elsif name =~ /^(destroy|true|false|integer|select|drop|create|alter|index|table|varchar|blob|date|datetime|timestamp)$/
-      raise "#{name} is a reserved word, please choose a different one"
 
     # do not allow model method names as attributes
-    else
+    reserved_words = %w[destroy true false integer select drop create alter index table varchar blob date datetime timestamp]
-      model = Kernel.const_get(object_lookup.name)
+    raise "#{name} is a reserved word, please choose a different one" if name.match?(/^(#{reserved_words.join('|')})$/)
-      record = model.new
+
-      if record.respond_to?(name.to_sym) && !record.attributes.key?(name)
+    record = object_lookup.name.constantize.new
-        raise "#{name} is a reserved word, please choose a different one"
+    return true if !record.respond_to?(name.to_sym)
-      end
+    return true if record.attributes.key?(name)
-    end
+    raise "#{name} is a reserved word, please choose a different one"
-    true
   end
 
   def check_editable
@@ -783,7 +777,7 @@ to send no browser reload event, pass false
     end
 
     if data_type == 'integer'
-      [:min, :max].each do |item|
+      %i[min max].each do |item|
         raise "Need data_option[#{item.inspect}] param" if !data_option[item]
         raise "Invalid data_option[#{item.inspect}] param #{data_option[item]}" if data_option[item].to_s !~ /^\d+?$/
       end
@@ -817,6 +811,7 @@ to send no browser reload event, pass false
       raise 'Need data_option[:diff] param in days' if data_option[:diff].nil?
     end
 
+    true
   end
 
 end

app/models/observer/chat/leave/background_job.rb

@@ -1,5 +1,3 @@
-# encoding: utf-8
-
 class Observer::Chat::Leave::BackgroundJob
   def initialize(chat_session_id, client_id, session)
     @chat_session_id = chat_session_id

app/models/observer/organization/ref_object_touch.rb

@@ -27,7 +27,7 @@ class Observer::Organization::RefObjectTouch < ActiveRecord::Observer
     Ticket.select('id').where(organization_id: record.id).pluck(:id).each do |ticket_id|
       ticket = Ticket.find(ticket_id)
       ticket.with_lock do
-        ticket.touch
+        ticket.touch # rubocop:disable Rails/SkipsModelValidations
       end
     end
 
@@ -35,7 +35,7 @@ class Observer::Organization::RefObjectTouch < ActiveRecord::Observer
     User.select('id').where(organization_id: record.id).pluck(:id).each do |user_id|
       user = User.find(user_id)
       user.with_lock do
-        user.touch
+        user.touch # rubocop:disable Rails/SkipsModelValidations
       end
     end
     true

app/models/observer/sla/ticket_rebuild_escalation.rb

@@ -33,9 +33,9 @@ class Observer::Sla::TicketRebuildEscalation < ActiveRecord::Observer
     changed = false
     fields_to_check = nil
     fields_to_check = if record.class == Sla
-                        %w(condition calendar_id first_response_time update_time solution_time)
+                        %w[condition calendar_id first_response_time update_time solution_time]
                       else
-                        %w(timezone business_hours default ical_url public_holidays)
+                        %w[timezone business_hours default ical_url public_holidays]
                       end
     fields_to_check.each do |item|
       next if !record.saved_change_to_attribute(item)

app/models/observer/sla/ticket_rebuild_escalation/background_job.rb

@@ -1,6 +1,5 @@
 class Observer::Sla::TicketRebuildEscalation::BackgroundJob
-  def initialize(_sla_id)
+  def initialize(_sla_id); end
-  end
 
   def perform
     Cache.delete('SLA::List::Active')

app/models/observer/ticket/article/communicate_email.rb

@@ -10,7 +10,7 @@ class Observer::Ticket::Article::CommunicateEmail < ActiveRecord::Observer
 
     # only do send email if article got created via application_server (e. g. not
     # if article and sender type is set via *.postmaster)
-    return if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+    return if ApplicationHandleInfo.postmaster?
 
     # if sender is customer, do not communicate
     return if !record.sender_id

app/models/observer/ticket/article/communicate_email/background_job.rb

@@ -90,7 +90,7 @@ class Observer::Ticket::Article::CommunicateEmail::BackgroundJob
 
     # add history record
     recipient_list = ''
-    [:to, :cc].each do |key|
+    %i[to cc].each do |key|
 
       next if !record[key]
       next if record[key] == ''
@@ -130,7 +130,7 @@ class Observer::Ticket::Article::CommunicateEmail::BackgroundJob
     if local_record.preferences['delivery_retry'] > 3
 
       recipient_list = ''
-      [:to, :cc].each do |key|
+      %i[to cc].each do |key|
 
         next if !local_record[key]
         next if local_record[key] == ''

app/models/observer/ticket/article/communicate_facebook.rb

@@ -12,7 +12,7 @@ class Observer::Ticket::Article::CommunicateFacebook < ActiveRecord::Observer
 
     # only do send email if article got created via application_server (e. g. not
     # if article and sender type is set via *.postmaster)
-    return if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+    return if ApplicationHandleInfo.postmaster?
 
     # if sender is customer, do not communicate
     return if !record.sender_id

app/models/observer/ticket/article/communicate_twitter.rb

@@ -10,7 +10,7 @@ class Observer::Ticket::Article::CommunicateTwitter < ActiveRecord::Observer
 
     # only do send email if article got created via application_server (e. g. not
     # if article and sender type is set via *.postmaster)
-    return if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+    return if ApplicationHandleInfo.postmaster?
 
     # if sender is customer, do not communicate
     return if !record.sender_id

app/models/observer/ticket/article/fillup_from_email.rb

@@ -10,7 +10,7 @@ class Observer::Ticket::Article::FillupFromEmail < ActiveRecord::Observer
 
     # only do fill of email from if article got created via application_server (e. g. not
     # if article and sender type is set via *.postmaster)
-    return true if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+    return if ApplicationHandleInfo.postmaster?
 
     # if sender is customer, do not change anything
     return true if !record.sender_id

app/models/observer/ticket/article/fillup_from_general.rb

@@ -10,7 +10,7 @@ class Observer::Ticket::Article::FillupFromGeneral < ActiveRecord::Observer
 
     # only do fill of from if article got created via application_server (e. g. not
     # if article and sender type is set via *.postmaster)
-    return true if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+    return if ApplicationHandleInfo.postmaster?
 
     # set from on all article types excluding email|twitter status|twitter direct-message|facebook feed post|facebook feed comment
     return true if !record.type_id

app/models/observer/ticket/article/fillup_from_origin_by_id.rb

@@ -10,7 +10,7 @@ class Observer::Ticket::Article::FillupFromOriginById < ActiveRecord::Observer
 
     # only do fill of from if article got created via application_server (e. g. not
     # if article and sender type is set via *.postmaster)
-    return if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+    return if ApplicationHandleInfo.postmaster?
 
     # check if origin_by_id exists
     return if record.origin_by_id.present?

app/models/observer/ticket/article_changes.rb

@@ -24,7 +24,7 @@ class Observer::Ticket::ArticleChanges < ActiveRecord::Observer
 
     # save ticket
     if !changed
-      record.ticket.touch
+      record.ticket.touch # rubocop:disable Rails/SkipsModelValidations
       return
     end
     record.ticket.save
@@ -38,7 +38,7 @@ class Observer::Ticket::ArticleChanges < ActiveRecord::Observer
 
     # save ticket
     if !changed
-      record.ticket.touch
+      record.ticket.touch # rubocop:disable Rails/SkipsModelValidations
       return
     end
     record.ticket.save!

app/models/observer/ticket/ref_object_touch.rb

@@ -24,26 +24,24 @@ class Observer::Ticket::RefObjectTouch < ActiveRecord::Observer
     cutomer_id_changed = record.saved_changes['customer_id']
     if cutomer_id_changed && cutomer_id_changed[0] != cutomer_id_changed[1]
       if cutomer_id_changed[0]
-        User.find(cutomer_id_changed[0]).touch
+        User.find(cutomer_id_changed[0]).touch # rubocop:disable Rails/SkipsModelValidations
       end
     end
 
     # touch new/current customer
-    if record.customer
+    record.customer&.touch
-      record.customer.touch
-    end
 
     # touch old organization if changed
     organization_id_changed = record.saved_changes['organization_id']
     if organization_id_changed && organization_id_changed[0] != organization_id_changed[1]
       if organization_id_changed[0]
-        Organization.find(organization_id_changed[0]).touch
+        Organization.find(organization_id_changed[0]).touch # rubocop:disable Rails/SkipsModelValidations
       end
     end
 
     # touch new/current organization
     return true if !record.organization
 
-    record.organization.touch
+    record.organization.touch # rubocop:disable Rails/SkipsModelValidations
   end
 end

app/models/observer/ticket/reset_new_state.rb

@@ -9,7 +9,7 @@ class Observer::Ticket::ResetNewState < ActiveRecord::Observer
     return if Setting.get('import_mode')
 
     # only change state if not processed via postmaster
-    return if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+    return if ApplicationHandleInfo.postmaster?
 
     # if article in internal
     return true if record.internal

app/models/observer/transaction.rb

@@ -33,14 +33,14 @@ class Observer::Transaction < ActiveRecord::Observer
     sync_backends = []
     Setting.where(area: 'Transaction::Backend::Sync').order(:name).each do |setting|
       backend = Setting.get(setting.name)
-      next if params[:disable] && params[:disable].include?(backend)
+      next if params[:disable]&.include?(backend)
       sync_backends.push Kernel.const_get(backend)
     end
 
     # get uniq objects
     list_objects = get_uniq_changes(list)
-    list_objects.each do |_object, objects|
+    list_objects.each_value do |objects|
-      objects.each do |_id, item|
+      objects.each_value do |item|
 
         # execute sync backends
         sync_backends.each do |backend|
@@ -215,7 +215,7 @@ class Observer::Transaction < ActiveRecord::Observer
     end
 
     # do not send anything if nothing has changed
-    return true if real_changes.empty?
+    return true if real_changes.blank?
 
     changed_by_id = nil
     changed_by_id = if record.respond_to?('updated_by_id')

app/models/observer/user/geo.rb

@@ -16,7 +16,7 @@ class Observer::User::Geo < ActiveRecord::Observer
   # check if geo need to be updated
   def check_geo(record)
 
-    location = %w(address street zip city country)
+    location = %w[address street zip city country]
 
     # check if geo update is needed based on old/new location
     if record.id
@@ -45,7 +45,7 @@ class Observer::User::Geo < ActiveRecord::Observer
   # update geo data of user
   def geo_update(record)
     address = ''
-    location = %w(address street zip city country)
+    location = %w[address street zip city country]
     location.each do |item|
       next if record[item].blank?
       if address.present?

app/models/observer/user/ref_object_touch.rb

@@ -29,7 +29,7 @@ class Observer::User::RefObjectTouch < ActiveRecord::Observer
         # featrue used for different propose, do not touch references
         if User.where(organization_id: organization_id_changed[0]).count < 100
           organization = Organization.find(organization_id_changed[0])
-          organization.touch
+          organization.touch # rubocop:disable Rails/SkipsModelValidations
           member_ids = organization.member_ids
         end
       end
@@ -40,7 +40,7 @@ class Observer::User::RefObjectTouch < ActiveRecord::Observer
 
       # featrue used for different propose, do not touch references
       if User.where(organization_id: record.organization_id).count < 100
-        record.organization.touch
+        record.organization.touch # rubocop:disable Rails/SkipsModelValidations
         member_ids += record.organization.member_ids
       end
     end
@@ -48,7 +48,7 @@ class Observer::User::RefObjectTouch < ActiveRecord::Observer
     # touch old/current customer
     member_ids.uniq.each do |user_id|
       next if user_id == record.id
-      User.find(user_id).touch
+      User.find(user_id).touch # rubocop:disable Rails/SkipsModelValidations
     end
     true
   end

app/models/organization/assets.rb

@@ -55,7 +55,7 @@ returns
 
         data[ app_model_organization ][ id ] = local_attributes
       end
-      %w(created_by_id updated_by_id).each do |local_user_id|
+      %w[created_by_id updated_by_id].each do |local_user_id|
         next if !self[ local_user_id ]
         next if data[ app_model_user ][ self[ local_user_id ] ]
         user = User.lookup(id: self[ local_user_id ])

app/models/overview.rb

@@ -45,14 +45,14 @@ class Overview < ApplicationModel
     local_link = local_link.parameterize(separator: '_')
     local_link.gsub!(/\s/, '_')
     local_link.gsub!(/_+/, '_')
-    local_link = URI.escape(local_link)
+    local_link = CGI.escape(local_link)
     if local_link.blank?
       local_link = id || rand(999)
     end
     check = true
     while check
       exists = Overview.find_by(link: local_link)
-      if exists && exists.id != id
+      if exists&.id != id
         local_link = "#{local_link}_#{rand(999)}"
       else
         check = false

app/models/overview/assets.rb

@@ -34,19 +34,17 @@ returns
       end
       if !data[ app_model_overview ][ id ]
         data[ app_model_overview ][ id ] = attributes_with_association_ids
-        if user_ids
+        user_ids&.each do |local_user_id|
-          user_ids.each do |local_user_id|
+          next if data[ app_model_user ][ local_user_id ]
-            next if data[ app_model_user ][ local_user_id ]
+          user = User.lookup(id: local_user_id)
-            user = User.lookup(id: local_user_id)
+          next if !user
-            next if !user
+          data = user.assets(data)
-            data = user.assets(data)
-          end
         end
 
         data = assets_of_selector('condition', data)
 
       end
-      %w(created_by_id updated_by_id).each do |local_user_id|
+      %w[created_by_id updated_by_id].each do |local_user_id|
         next if !self[ local_user_id ]
         next if data[ app_model_user ][ self[ local_user_id ] ]
         user = User.lookup(id: self[ local_user_id ])

app/models/package.rb

@@ -166,7 +166,7 @@ link files + execute migration up
       file = file.sub(%r{^/}, '')
 
       # ignore files
-      if file =~ /^README/
+      if file.match?(/^README/)
         logger.info "NOTICE: Ignore #{file}"
         next
       end
@@ -185,10 +185,9 @@ link files + execute migration up
         backup_file = dest.to_s + '.link_backup'
         if File.exist?(backup_file)
           raise "Can't link #{entry} -> #{dest}, destination and .link_backup already exists!"
-        else
-          logger.info "Create backup file of #{dest} -> #{backup_file}."
-          File.rename(dest.to_s, backup_file)
         end
+        logger.info "Create backup file of #{dest} -> #{backup_file}."
+        File.rename(dest.to_s, backup_file)
       end
 
       if File.file?(entry)
@@ -528,21 +527,18 @@ execute all pending package migrations at once
         end
 
         # down
+        done = Package::Migration.find_by(name: package.underscore, version: version)
         if direction == 'reverse'
-          done = Package::Migration.find_by(name: package.underscore, version: version)
           next if !done
           logger.info "NOTICE: down package migration '#{migration}'"
           load "#{location}/#{migration}"
           classname = name.camelcase
           classname.constantize.down
           record = Package::Migration.find_by(name: package.underscore, version: version)
-          if record
+          record&.destroy
-            record.destroy
-          end
 
           # up
         else
-          done = Package::Migration.find_by(name: package.underscore, version: version)
           next if done
           logger.info "NOTICE: up package migration '#{migration}'"
           load "#{location}/#{migration}"

app/models/postmaster_filter.rb

@@ -10,7 +10,7 @@ class PostmasterFilter < ApplicationModel
 
   def validate_condition
     raise Exceptions::UnprocessableEntity, 'Min. one match rule needed!' if match.blank?
-    match.each do |_key, meta|
+    match.each_value do |meta|
       raise Exceptions::UnprocessableEntity, 'operator invalid, ony "contains" and "contains not" is supported' if meta['operator'].blank? || meta['operator'] !~ /^(contains|contains not)$/
       raise Exceptions::UnprocessableEntity, 'value invalid/empty' if meta['value'].blank?
       begin

app/models/report.rb

@@ -1,7 +1,7 @@
 class Report
 
   def self.enabled?
-    !Setting.get('es_url').empty?
+    Setting.get('es_url').present?
   end
 
   def self.config

app/models/role/assets.rb

@@ -35,7 +35,7 @@ returns
         # loops, will be updated with lookup attributes later
         data[ app_model ][ id ] = local_attributes
 
-        local_attributes['group_ids'].each do |group_id, _access|
+        local_attributes['group_ids'].each_key do |group_id|
           group = Group.lookup(id: group_id)
           next if !group
           data = group.assets(data)
@@ -44,7 +44,7 @@ returns
 
       return data if !self['created_by_id'] && !self['updated_by_id']
       app_model_user = User.to_app_model
-      %w(created_by_id updated_by_id).each do |local_user_id|
+      %w[created_by_id updated_by_id].each do |local_user_id|
         next if !self[ local_user_id ]
         next if data[ app_model_user ] && data[ app_model_user ][ self[ local_user_id ] ]
         user = User.lookup(id: self[ local_user_id ])

app/models/scheduler.rb

@@ -69,7 +69,7 @@ class Scheduler < ApplicationModel
   # return [nil]
   def self.cleanup(force: false)
 
-    if !force && caller_locations.first.label != 'threads'
+    if !force && caller_locations(1..1).first.label != 'threads'
       raise 'This method should only get called when Scheduler.threads are initialized. Use `force: true` to start anyway.'
     end
 
@@ -175,7 +175,7 @@ class Scheduler < ApplicationModel
     )
 
     logger.info "execute #{job.method} (try_count #{try_count})..."
-    eval job.method() # rubocop:disable Lint/Eval
+    eval job.method() # rubocop:disable Security/Eval
   rescue => e
     logger.error "execute #{job.method} (try_count #{try_count}) exited with error #{e.inspect}"
 

app/models/sla/assets.rb

@@ -42,7 +42,7 @@ returns
           end
         end
       end
-      %w(created_by_id updated_by_id).each do |local_user_id|
+      %w[created_by_id updated_by_id].each do |local_user_id|
         next if !self[ local_user_id ]
         next if data[ app_model_user ][ self[ local_user_id ] ]
         user = User.lookup(id: self[ local_user_id ])

app/models/store.rb

@@ -178,7 +178,7 @@ returns
       raise "No such file #{store_file_id}!"
     end
     if !path
-      path = "#{Rails.root}/tmp/#{filename}"
+      path = Rails.root.join('tmp', filename)
     end
     ::File.open(path, 'wb') do |handle|
       handle.write file.content

app/models/store/file.rb

@@ -90,7 +90,7 @@ in case of fixing sha hash use:
         store = Store.find_by(store_file_id: item.id)
         logger.error "STORE: #{store.inspect}"
         if fix_it
-          item.update_attribute(:sha, sha)
+          item.update_attribute(:sha, sha) # rubocop:disable Rails/SkipsModelValidations
         end
       end
       success
@@ -128,7 +128,7 @@ nice move to keep system responsive
         adapter_target.add(content, item.sha)
 
         # update meta data
-        item.update_attribute(:provider, target)
+        item.update_attribute(:provider, target) # rubocop:disable Rails/SkipsModelValidations
 
         # remove from old provider
         adapter_source.delete(item.sha)

app/models/store/provider/file.rb

@@ -51,12 +51,11 @@ class Store::Provider::File
     end
 
     # check if dir need to be removed
-    base = "#{Rails.root}/storage/fs"
     locations = location.split('/')
     (0..locations.count).reverse_each do |count|
       local_location = locations[0, count].join('/')
-      break if local_location =~ %r{storage/fs/{0,4}$}
+      break if local_location.match?(%r{storage/fs/{0,4}$})
-      break if !Dir["#{local_location}/*"].empty?
+      break if Dir["#{local_location}/*"].present?
       FileUtils.rmdir(local_location)
     end
   end
@@ -65,8 +64,8 @@ class Store::Provider::File
   def self.get_location(sha)
 
     # generate directory
-    base   = "#{Rails.root}/storage/fs/"
+    base = Rails.root.join('storage', 'fs').to_s
-    parts  = []
+    parts = []
     length1 = 4
     length2 = 5
     length3 = 7

app/models/taskbar.rb

@@ -14,9 +14,9 @@ class Taskbar < ApplicationModel
 
   def state_changed?
     return false if state.blank?
-    state.each do |_key, value|
+    state.each_value do |value|
       if value.is_a? Hash
-        value.each do |_key1, value1|
+        value.each_value do |value1|
           next if value1.blank?
           return true
         end
@@ -32,10 +32,10 @@ class Taskbar < ApplicationModel
 
   def update_last_contact
     return true if local_update
-    return true if changes.empty?
+    return true if changes.blank?
     if changes['notify']
       count = 0
-      changes.each do |attribute, _value|
+      changes.each_key do |attribute|
         next if attribute == 'updated_at'
         next if attribute == 'created_at'
         count += 1