Corrected with rubocop cop 'Style/GuardClause'.

app/controllers/application_controller.rb

@@ -35,15 +35,17 @@ class ApplicationController < ActionController::Base
   # text/plain.
 
   def cors_preflight_check
-    if request.method == 'OPTIONS'
-      headers['Access-Control-Allow-Origin']      = '*'
-      headers['Access-Control-Allow-Methods']     = 'POST, GET, PUT, DELETE, OPTIONS'
-      headers['Access-Control-Allow-Headers']     = 'Content-Type, Depth, User-Agent, X-File-Size, X-Requested-With, If-Modified-Since, X-File-Name, Cache-Control, Accept-Language'
-      headers['Access-Control-Max-Age']           = '1728000'
-      headers['Access-Control-Allow-Credentials'] = 'true'
-      render text: '', content_type: 'text/plain'
-      return false
-    end
+
+    return if request.method != 'OPTIONS'
+
+    headers['Access-Control-Allow-Origin']      = '*'
+    headers['Access-Control-Allow-Methods']     = 'POST, GET, PUT, DELETE, OPTIONS'
+    headers['Access-Control-Allow-Headers']     = 'Content-Type, Depth, User-Agent, X-File-Size, X-Requested-With, If-Modified-Since, X-File-Name, Cache-Control, Accept-Language'
+    headers['Access-Control-Max-Age']           = '1728000'
+    headers['Access-Control-Allow-Credentials'] = 'true'
+    render text: '', content_type: 'text/plain'
+
+    false
   end
 
   private
@@ -90,9 +92,9 @@ class ApplicationController < ActionController::Base
     end
 
     # fill user agent
-    if !session[:user_agent]
-      session[:user_agent] = request.env['HTTP_USER_AGENT']
-    end
+    return if session[:user_agent]
+
+    session[:user_agent] = request.env['HTTP_USER_AGENT']
   end
 
   def authentication_check_only

app/controllers/ticket_articles_controller.rb

@@ -159,15 +159,15 @@ class TicketArticlesController < ApplicationController
     )
 
     # find file
-    if list
-      file = Store.find(list.first)
-      send_data(
-        file.content,
-        filename: file.filename,
-        type: 'message/rfc822',
-        disposition: 'inline'
-      )
-    end
+    return if !list
+
+    file = Store.find(list.first)
+    send_data(
+      file.content,
+      filename: file.filename,
+      type: 'message/rfc822',
+      disposition: 'inline'
+    )
   end
 
 end

app/controllers/tickets_controller.rb

@@ -531,11 +531,11 @@ class TicketsController < ApplicationController
     end
 
     # remove attachments from upload cache
-    if form_id
-      Store.remove(
-        object: 'UploadCache',
-        o_id: form_id,
-      )
-    end
+    return if !form_id
+
+    Store.remove(
+      object: 'UploadCache',
+      o_id: form_id,
+    )
   end
 end

app/models/application_model.rb

@@ -44,11 +44,11 @@ class ApplicationModel < ActiveRecord::Base
   @@import_class_list = ['Ticket', 'Ticket::Article', 'History', 'Ticket::State', 'Ticket::StateType', 'Ticket::Priority', 'Group', 'User', 'Role' ]
 
   def check_attributes_protected
-    if !Setting.get('system_init_done') || ( Setting.get('import_mode') && @@import_class_list.include?( self.class.to_s ) )
-      # do noting, use id as it is
-    else
-      self[:id] = nil
-    end
+
+    # do noting, use id as it is
+    return if !Setting.get('system_init_done') || ( Setting.get('import_mode') && @@import_class_list.include?( self.class.to_s ) )
+
+    self[:id] = nil
   end
 
 =begin
@@ -197,14 +197,15 @@ returns
         self.updated_by_id = UserInfo.current_user_id
       end
     end
-    if self.class.column_names.include? 'created_by_id'
-      if UserInfo.current_user_id
-        if self.created_by_id && self.created_by_id != UserInfo.current_user_id
-          logger.info "NOTICE create - self.created_by_id is different: #{self.created_by_id.to_s}/#{UserInfo.current_user_id.to_s}"
-        end
-        self.created_by_id = UserInfo.current_user_id
-      end
+
+    return if !self.class.column_names.include? 'created_by_id'
+
+    return if !UserInfo.current_user_id
+
+    if self.created_by_id && self.created_by_id != UserInfo.current_user_id
+      logger.info "NOTICE create - self.created_by_id is different: #{self.created_by_id.to_s}/#{UserInfo.current_user_id.to_s}"
     end
+    self.created_by_id = UserInfo.current_user_id
   end
 
 =begin
@@ -223,9 +224,9 @@ returns
 
   def fill_up_user_update
     return if !self.class.column_names.include? 'updated_by_id'
-    if UserInfo.current_user_id
-      self.updated_by_id = UserInfo.current_user_id
-    end
+    return if !UserInfo.current_user_id
+
+    self.updated_by_id = UserInfo.current_user_id
   end
 
   def cache_update(o)
@@ -268,12 +269,13 @@ returns
       key = self.class.to_s + ':f:' + self.name.to_s
       Cache.delete( key.to_s )
     end
-    if self[:login]
-      key = self.class.to_s + '::' + self.login.to_s
-      Cache.delete( key.to_s )
-      key = self.class.to_s + ':f:' + self.login.to_s
-      Cache.delete( key.to_s )
-    end
+
+    return if !self[:login]
+
+    key = self.class.to_s + '::' + self.login.to_s
+    Cache.delete( key.to_s )
+    key = self.class.to_s + ':f:' + self.login.to_s
+    Cache.delete( key.to_s )
   end
 
   def self.cache_set(data_id, data, full = false)
@@ -962,9 +964,9 @@ store attachments for this object
     self.attachments_buffer = attachments
 
     # update if object already exists
-    if self.id && self.id != 0
-      attachments_buffer_check
-    end
+    return if !( self.id && self.id != 0 )
+
+    attachments_buffer_check
   end
 
 =begin

app/models/channel/imap.rb

@@ -91,8 +91,9 @@ class Channel::IMAP < Channel::EmailParser
   end
 
   def disconnect
-    if @imap
-      @imap.disconnect()
-    end
+
+    return if !@imap
+
+    @imap.disconnect()
   end
 end

app/models/channel/pop3.rb

@@ -72,9 +72,10 @@ class Channel::POP3 < Channel::EmailParser
   end
 
   def disconnect
-    if @pop
-      @pop.finish
-    end
+
+    return if !@pop
+
+    @pop.finish
   end
 
 end

app/models/channel/twitter2.rb

@@ -13,9 +13,10 @@ class Channel::TWITTER2
   end
 
   def disconnect
-    if @client
-      @client = nil
-    end
+
+    return if !@client
+
+    @client = nil
   end
 
   def fetch (channel)
@@ -288,16 +289,15 @@ class Channel::TWITTER2
       return dm
     end
 
-    if attr[:type] == 'twitter status'
-      message = client.update(
-        attr[:body].to_s,
-        {
-          in_reply_to_status_id: attr[:in_reply_to]
-        }
-      )
-      #      puts message.inspect
-      return message
-    end
+    return if attr[:type] != 'twitter status'
 
+    message = client.update(
+      attr[:body].to_s,
+      {
+        in_reply_to_status_id: attr[:in_reply_to]
+      }
+    )
+    #      puts message.inspect
+    return message
   end
 end

app/models/observer/session.rb

@@ -15,11 +15,12 @@ class Observer::Session < ActiveRecord::Observer
   def check(record)
     return if !record.data
     return if record[:request_type]
+
     # remember request type
-    if record.data['request_type']
-      record[:request_type] = record.data['request_type']
-      record.data.delete('request_type')
-    end
+    return if !record.data['request_type']
+
+    record[:request_type] = record.data['request_type']
+    record.data.delete('request_type')
   end
 
 end

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

@@ -44,17 +44,18 @@ class Observer::Ticket::Article::CommunicateEmail::BackgroundJob
         recipient_list += record[key]
       end
     }
-    if recipient_list != ''
-      History.add(
-        o_id: record.id,
-        history_type: 'email',
-        history_object: 'Ticket::Article',
-        related_o_id: ticket.id,
-        related_history_object: 'Ticket',
-        value_from: record.subject,
-        value_to: recipient_list,
-        created_by_id: record.created_by_id,
-      )
-    end
+
+    return if recipient_list == ''
+
+    History.add(
+      o_id: record.id,
+      history_type: 'email',
+      history_object: 'Ticket::Article',
+      related_o_id: ticket.id,
+      related_history_object: 'Ticket',
+      value_from: record.subject,
+      value_to: recipient_list,
+      created_by_id: record.created_by_id,
+    )
   end
 end

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

@@ -14,9 +14,9 @@ class Observer::Ticket::Article::FillupFromGeneral < ActiveRecord::Observer
     return if sender['name'] == 'Customer'
 
     # set from if not given
-    if !record.from
-      user = User.find( record.created_by_id )
-      record.from = "#{user.firstname} #{user.lastname}"
-    end
+    return if record.from
+
+    user        = User.find( record.created_by_id )
+    record.from = "#{user.firstname} #{user.lastname}"
   end
 end

app/models/observer/ticket/last_contact.rb

@@ -31,16 +31,15 @@ class Observer::Ticket::LastContact < ActiveRecord::Observer
     end
 
     # if sender is not agent
-    if sender.name == 'Agent'
+    return if sender.name != 'Agent'
 
-      # set last_contact_agent
-      record.ticket.last_contact_agent = record.created_at
+    # set last_contact_agent
+    record.ticket.last_contact_agent = record.created_at
 
-      # set last_contact
-      record.ticket.last_contact = record.created_at
+    # set last_contact
+    record.ticket.last_contact = record.created_at
 
-      # save ticket
-      record.ticket.save
-    end
+    # save ticket
+    record.ticket.save
   end
 end

app/models/observer/ticket/notification/background_job.rb

@@ -128,15 +128,15 @@ class Observer::Ticket::Notification::BackgroundJob
     end
 
     # add history record
-    if recipient_list != ''
-      History.add(
-        o_id: ticket.id,
-        history_type: 'notification',
-        history_object: 'Ticket',
-        value_to: recipient_list,
-        created_by_id: ticket.updated_by_id ||  1
-      )
-    end
+    return if recipient_list == ''
+
+    History.add(
+      o_id: ticket.id,
+      history_type: 'notification',
+      history_object: 'Ticket',
+      value_to: recipient_list,
+      created_by_id: ticket.updated_by_id ||  1
+    )
   end
 
   def human_changes(user, record)

app/models/observer/ticket/ref_object_touch.rb

@@ -40,8 +40,8 @@ class Observer::Ticket::RefObjectTouch < ActiveRecord::Observer
     end
 
     # touch new/current organization
-    if record.organization
-      record.organization.touch
-    end
+    return if !record.organization
+
+    record.organization.touch
   end
 end

app/models/observer/ticket/user_ticket_counter.rb

@@ -42,9 +42,10 @@ class Observer::Ticket::UserTicketCounter < ActiveRecord::Observer
       need_update = true
       customer[:preferences][:tickets_closed] = tickets_closed
     end
-    if need_update
-      customer.save
-    end
+
+    return if !need_update
+
+    customer.save
   end
 
 end

app/models/setting.rb

@@ -58,10 +58,11 @@ class Setting < ApplicationModel
     self.state_initial = self.state
   end
   def state_check
-    if self.state || self.state == false
-      if !self.state.respond_to?('has_key?') || !self.state.has_key?(:value)
-        self.state = { value: self.state }
-      end
-    end
+
+    return if !(self.state || self.state == false)
+
+    return if !( !self.state.respond_to?('has_key?') || !self.state.has_key?(:value) )
+
+    self.state = { value: self.state }
   end
 end

app/models/ticket.rb

@@ -201,21 +201,23 @@ returns
   end
 
   def check_title
-    if self.title
-      self.title.gsub!(/\s|\t|\r/, ' ')
-    end
+
+    return if !self.title
+
+    self.title.gsub!(/\s|\t|\r/, ' ')
   end
 
   def check_defaults
     if !self.owner_id
       self.owner_id = 1
     end
-    if self.customer_id
-      customer = User.find( self.customer_id )
-      if self.organization_id != customer.organization_id
-        self.organization_id = customer.organization_id
-      end
-    end
+
+    return if !self.customer_id
+
+    customer = User.find( self.customer_id )
+    return if self.organization_id == customer.organization_id
+
+    self.organization_id = customer.organization_id
   end
 
   def reset_pending_time
@@ -228,9 +230,9 @@ returns
     current_state_type = Ticket::StateType.lookup( id: current_state.state_type_id )
 
     # in case, set pending_time to nil
-    if current_state_type.name !~ /^pending/i
-      self.pending_time = nil
-    end
+    return if current_state_type.name =~ /^pending/i
+
+    self.pending_time = nil
   end
 
   def destroy_dependencies

app/models/ticket/article.rb

@@ -30,9 +30,10 @@ class Ticket::Article < ApplicationModel
   private
 
   def check_subject
-    if self.subject
-      self.subject.gsub!(/\s|\t|\r/, ' ')
-    end
+
+    return if !self.subject
+
+    self.subject.gsub!(/\s|\t|\r/, ' ')
   end
 
   class Flag < ApplicationModel

app/models/ticket/escalation.rb

@@ -152,10 +152,11 @@ returns
     if sla_selected.close_time && self.close_time_in_min
       self.close_time_diff_in_min = sla_selected.close_time - self.close_time_in_min
     end
-    if self.changed?
-      self.callback_loop = true
-      self.save
-    end
+
+    return if !self.changed?
+
+    self.callback_loop = true
+    self.save
   end
 
 =begin

app/models/translation.rb

@@ -168,9 +168,9 @@ translate strings in ruby context, e. g. for notifications
 
   private
   def set_initial
-    if !target_initial
-      self.target_initial = self.target
-    end
+
+    return if target_initial
+    self.target_initial = self.target
   end
   def cache_clear
     Cache.delete( 'Translation::' + self.locale.downcase )

app/models/user.rb

@@ -449,9 +449,10 @@ returns
   end
 
   def check_email
-    if self.email
-      self.email = self.email.downcase
-    end
+
+    return if !self.email
+
+    self.email = self.email.downcase
   end
 
   def check_login
@@ -469,16 +470,16 @@ returns
     end
 
     # check if login already exists
-    if self.login
-      self.login = self.login.downcase
-      check = true
-      while check
-        exists = User.where( login: self.login ).first
-        if exists && exists.id != self.id
-          self.login = self.login + rand(999).to_s
-        else
-          check = false
-        end
+    return if !self.login
+
+    self.login = self.login.downcase
+    check      = true
+    while check
+      exists = User.where( login: self.login ).first
+      if exists && exists.id != self.id
+        self.login = self.login + rand(999).to_s
+      else
+        check = false
       end
     end
   end
@@ -499,10 +500,10 @@ returns
     )
 
     # update user link
-    if avatar
-      self.update_column( :image, avatar.store_hash )
-      self.cache_delete
-    end
+    return if !avatar
+
+    self.update_column( :image, avatar.store_hash )
+    self.cache_delete
   end
 
   def avatar_destroy
@@ -524,9 +525,9 @@ returns
     end
 
     # crypt password if not already crypted
-    if self.password && self.password !~ /^\{sha2\}/
-      crypted       = Digest::SHA2.hexdigest( self.password )
-      self.password = "{sha2}#{crypted}"
-    end
+    return if !( self.password && self.password !~ /^\{sha2\}/ )
+
+    crypted       = Digest::SHA2.hexdigest( self.password )
+    self.password = "{sha2}#{crypted}"
   end
 end

db/migrate/20150112000001_update_overview_and_ticket_state.rb

@@ -5,121 +5,122 @@ class UpdateOverviewAndTicketState < ActiveRecord::Migration
     overview_role = Role.where( name: 'Agent' ).first
     add_column :ticket_states, :next_state_id,  :integer, null: true
     UserInfo.current_user_id = 1
-    if overview_role
-      Overview.create_or_update(
-        name: 'My pending reached Tickets',
-        link: 'my_pending_reached',
-        prio: 1010,
-        role_id: overview_role.id,
-        condition: {
-          'tickets.state_id'     => [3],
-          'tickets.owner_id'     => 'current_user.id',
-          'tickets.pending_time' => { 'direction' => 'before', 'count' => 1, 'area' => 'minute' },
-        },
-        order: {
-          by: 'created_at',
-          direction: 'ASC',
-        },
-        view: {
-          d: [ 'title', 'customer', 'group', 'created_at' ],
-          s: [ 'title', 'customer', 'group', 'created_at' ],
-          m: [ 'number', 'title', 'customer', 'group', 'created_at' ],
-          view_mode_default: 's',
-        },
-      )
-      Ticket::State.create_or_update( id: 3, name: 'pending reminder', state_type_id: Ticket::StateType.where(name: 'pending reminder').first.id  )
-      Ticket::State.create_or_update( id: 6, name: 'removed', state_type_id: Ticket::StateType.where(name: 'removed').first.id, active: false )
-      Ticket::State.create_or_update( id: 7, name: 'pending close', state_type_id: Ticket::StateType.where(name: 'pending action').first.id  )
 
-      ObjectManager::Attribute.add(
-        object: 'Ticket',
-        name: 'state_id',
-        display: 'State',
-        data_type: 'select',
-        data_option: {
-          relation: 'TicketState',
-          nulloption: true,
-          multiple: false,
-          null: false,
-          default: 2,
-          translate: true,
-          filter: [1, 2, 3, 4, 7],
-        },
-        editable: false,
-        active: true,
-        screens: {
-          create_middle: {
-            Agent: {
-              null: false,
-              item_class: 'column',
-            },
-            Customer: {
-              item_class: 'column',
-              nulloption: false,
-              null: true,
-              filter: [1, 4],
-              default: 1,
-            },
-          },
-          edit: {
-            Agent: {
-              nulloption: false,
-              null: false,
-              filter: [2, 3, 4, 7],
-            },
-            Customer: {
-              nulloption: false,
-              null: true,
-              filter: [2, 4],
-              default: 2,
-            },
-          },
-        },
-        pending_migration: false,
-        position: 40,
-        created_by_id: 1,
-        updated_by_id: 1,
-      )
+    return true if !overview_role
 
-      ObjectManager::Attribute.add(
-        object: 'Ticket',
-        name: 'pending_time',
-        display: 'Pending till',
-        data_type: 'datetime',
-        data_option: {
-          future: true,
-          past: false,
-          diff: 24,
-          null: true,
-          translate: true,
-          required_if: {
-            state_id: [3, 7]
+    Overview.create_or_update(
+      name: 'My pending reached Tickets',
+      link: 'my_pending_reached',
+      prio: 1010,
+      role_id: overview_role.id,
+      condition: {
+        'tickets.state_id'     => [3],
+        'tickets.owner_id'     => 'current_user.id',
+        'tickets.pending_time' => { 'direction' => 'before', 'count' => 1, 'area' => 'minute' },
+      },
+      order: {
+        by: 'created_at',
+        direction: 'ASC',
+      },
+      view: {
+        d: [ 'title', 'customer', 'group', 'created_at' ],
+        s: [ 'title', 'customer', 'group', 'created_at' ],
+        m: [ 'number', 'title', 'customer', 'group', 'created_at' ],
+        view_mode_default: 's',
+      },
+    )
+    Ticket::State.create_or_update( id: 3, name: 'pending reminder', state_type_id: Ticket::StateType.where(name: 'pending reminder').first.id  )
+    Ticket::State.create_or_update( id: 6, name: 'removed', state_type_id: Ticket::StateType.where(name: 'removed').first.id, active: false )
+    Ticket::State.create_or_update( id: 7, name: 'pending close', state_type_id: Ticket::StateType.where(name: 'pending action').first.id  )
+
+    ObjectManager::Attribute.add(
+      object: 'Ticket',
+      name: 'state_id',
+      display: 'State',
+      data_type: 'select',
+      data_option: {
+        relation: 'TicketState',
+        nulloption: true,
+        multiple: false,
+        null: false,
+        default: 2,
+        translate: true,
+        filter: [1, 2, 3, 4, 7],
+      },
+      editable: false,
+      active: true,
+      screens: {
+        create_middle: {
+          Agent: {
+            null: false,
+            item_class: 'column',
           },
-          shown_if: {
-            state_id: [3, 7]
+          Customer: {
+            item_class: 'column',
+            nulloption: false,
+            null: true,
+            filter: [1, 4],
+            default: 1,
           },
         },
-        editable: false,
-        active: true,
-        screens: {
-          create_middle: {
-            '-all-' => {
-              null: false,
-              item_class: 'column',
-            },
+        edit: {
+          Agent: {
+            nulloption: false,
+            null: false,
+            filter: [2, 3, 4, 7],
           },
-          edit: {
-            Agent: {
-              null: false,
-            },
+          Customer: {
+            nulloption: false,
+            null: true,
+            filter: [2, 4],
+            default: 2,
           },
         },
-        pending_migration: false,
-        position: 41,
-        created_by_id: 1,
-        updated_by_id: 1,
-      )
-    end
+      },
+      pending_migration: false,
+      position: 40,
+      created_by_id: 1,
+      updated_by_id: 1,
+    )
+
+    ObjectManager::Attribute.add(
+      object: 'Ticket',
+      name: 'pending_time',
+      display: 'Pending till',
+      data_type: 'datetime',
+      data_option: {
+        future: true,
+        past: false,
+        diff: 24,
+        null: true,
+        translate: true,
+        required_if: {
+          state_id: [3, 7]
+        },
+        shown_if: {
+          state_id: [3, 7]
+        },
+      },
+      editable: false,
+      active: true,
+      screens: {
+        create_middle: {
+          '-all-' => {
+            null: false,
+            item_class: 'column',
+          },
+        },
+        edit: {
+          Agent: {
+            null: false,
+          },
+        },
+      },
+      pending_migration: false,
+      position: 41,
+      created_by_id: 1,
+      updated_by_id: 1,
+    )
   end
 
   def down

db/migrate/20150223000001_update_overview2.rb

@@ -2,29 +2,30 @@ class UpdateOverview2 < ActiveRecord::Migration
   def up
 
     overview_role = Role.where( name: 'Agent' ).first
-    if overview_role
-      UserInfo.current_user_id = 1
-      Overview.create_or_update(
-        name: 'My assigned Tickets',
-        link: 'my_assigned',
-        prio: 1000,
-        role_id: overview_role.id,
-        condition: {
-          'tickets.state_id' => [ 1, 2, 3, 7 ],
-          'tickets.owner_id' => 'current_user.id',
-        },
-        order: {
-          by: 'created_at',
-          direction: 'ASC',
-        },
-        view: {
-          d: [ 'title', 'customer', 'group', 'created_at' ],
-          s: [ 'title', 'customer', 'group', 'created_at' ],
-          m: [ 'number', 'title', 'customer', 'group', 'created_at' ],
-          view_mode_default: 's',
-        },
-      )
-    end
+
+    return true if !overview_role
+
+    UserInfo.current_user_id = 1
+    Overview.create_or_update(
+      name: 'My assigned Tickets',
+      link: 'my_assigned',
+      prio: 1000,
+      role_id: overview_role.id,
+      condition: {
+        'tickets.state_id' => [ 1, 2, 3, 7 ],
+        'tickets.owner_id' => 'current_user.id',
+      },
+      order: {
+        by: 'created_at',
+        direction: 'ASC',
+      },
+      view: {
+        d: [ 'title', 'customer', 'group', 'created_at' ],
+        s: [ 'title', 'customer', 'group', 'created_at' ],
+        m: [ 'number', 'title', 'customer', 'group', 'created_at' ],
+        view_mode_default: 's',
+      },
+    )
   end
 
   def down

script/source_code_filter.rb

@@ -61,9 +61,9 @@ def checkForHeader(fileName)
   t_file.unlink
 
   # beautify ruby file
-  if !isCoffee
-    t_file = RBeautify.beautify_file(fileName)
-  end
+  return if isCoffee
+
+  t_file = RBeautify.beautify_file(fileName)
 end
 
 #folder array