Refactoring, improved handling of from meta params on changes.

app/assets/javascripts/app/controllers/_application_controller.coffee

@@ -505,10 +505,10 @@ class App.Controller extends Spine.Controller
 
   # central method, is getting called on every ticket form change
   ticketFormChanges: (params, attribute, attributes, classname, form, ui) =>
-    if @form_meta.dependencies && @form_meta.dependencies[attribute.name]
+    if @formMeta.dependencies && @formMeta.dependencies[attribute.name]
-      dependency = @form_meta.dependencies[attribute.name][ parseInt(params[attribute.name]) ]
+      dependency = @formMeta.dependencies[attribute.name][ parseInt(params[attribute.name]) ]
       if !dependency
-        dependency = @form_meta.dependencies[attribute.name][ params[attribute.name] ]
+        dependency = @formMeta.dependencies[attribute.name][ params[attribute.name] ]
       if dependency
         for fieldNameToChange of dependency
           filter = []

app/assets/javascripts/app/controllers/agent_ticket_create.coffee

@@ -15,9 +15,6 @@ class App.TicketCreate extends App.Controller
       App.TaskManager.remove(@task_key)
       return
 
-    # set title
-    @form_meta = undefined
-
     # define default type
     @default_type = 'phone-in'
 
@@ -29,8 +26,6 @@ class App.TicketCreate extends App.Controller
     # update navbar highlighting
     @navupdate '#ticket/create/id/' + @id + split
 
-    @fetch(params)
-
     # lisen if view need to be rerendered
     @bind 'ticket_create_rerender', (defaults) =>
       @log 'notice', 'error', defaults
@@ -41,9 +36,11 @@ class App.TicketCreate extends App.Controller
       return if !@authenticate(true)
       @render()
 
-    # bind on new ticket_create_attributes updates
+    load = (data) =>
-    @bind 'ticket_create_attributes', (data) =>
+      App.Collection.loadAssets(data.assets)
-      App.SessionStorage.set('ticket_create_attributes', data)
+      @formMeta = data.form_meta
+      @buildScreen(params)
+    @bindId = App.TicketCreateCollection.one(load)
 
   changeFormType: (e) =>
     type = $(e.target).data('type')
@@ -121,9 +118,6 @@ class App.TicketCreate extends App.Controller
     return false if !diff || _.isEmpty( diff )
     return true
 
-  release: ->
-    # nothing
-
   autosave: =>
     update = =>
       data = @formParam( @el.find('.ticket-create') )
@@ -135,42 +129,27 @@ class App.TicketCreate extends App.Controller
     @interval( update, 3000, @id )
 
   # get data / in case also ticket data for split
-  fetch: (params) ->
+  buildScreen: (params) =>
-
-    # use cache
-    cache = App.SessionStorage.get('ticket_create_attributes')
-
-    if cache && !params.ticket_id && !params.article_id
-
-      # get edit form attributes
-      @form_meta = cache.form_meta
-
-      # load assets
-      App.Collection.loadAssets(cache.assets)
 
+    if !params.ticket_id && !params.article_id
       @render()
-    else
+      return
+
+    # fetch split ticket data
     @ajax(
-        id:    'ticket_create' + @task_key
+      id:    'ticket_split' + @task_key
       type:  'GET'
-        url:   @apiPath + '/ticket_create'
+      url:   @apiPath + '/ticket_split'
       data:
         ticket_id: params.ticket_id
         article_id: params.article_id
       processData: true
       success: (data, status, xhr) =>
 
-          # cache request
-          App.SessionStorage.set('ticket_create_attributes', data)
-
-          # get edit form attributes
-          @form_meta = data.form_meta
-
         # load assets
         App.Collection.loadAssets(data.assets)
 
-          # split ticket
+        # prefill with split ticket
-          if data.split && data.split.ticket_id && data.split.article_id
         t = App.Ticket.find( params.ticket_id ).attributes()
         a = App.TicketArticle.find( params.article_id )
 
@@ -259,7 +238,7 @@ class App.TicketCreate extends App.Controller
         @ticketFormChanges,
         signatureChanges,
       ]
-      filter:     @form_meta.filter
+      filter:     @formMeta.filter
       autofocus: true
       params:    params
     )
@@ -282,7 +261,7 @@ class App.TicketCreate extends App.Controller
         @ticketFormChanges,
         signatureChanges,
       ]
-      filter:     @form_meta.filter
+      filter:     @formMeta.filter
       params:     params
       noFieldset: true
     )
@@ -297,7 +276,7 @@ class App.TicketCreate extends App.Controller
         @ticketFormChanges,
         signatureChanges,
       ]
-      filter:   @form_meta.filter
+      filter:   @formMeta.filter
       params:   params
     )
 

app/assets/javascripts/app/controllers/customer_ticket_create.coffee

@@ -13,45 +13,14 @@ class Index extends App.ControllerContent
     # set title
     @title 'New Ticket'
     @form_id = App.ControllerForm.formId()
-    @form_meta = undefined
 
-    @fetch(params)
     @navupdate '#customer_ticket_new'
 
-  # get data / in case also ticket data for split
+    load = (data) =>
-  fetch: (params) ->
-
-    # use cache
-    cache = App.SessionStorage.get( 'ticket_create_attributes' )
-
-    if cache
-
-      # get edit form attributes
-      @form_meta = cache.form_meta
-
-      # load assets
-      App.Collection.loadAssets( cache.assets )
-
-      @render()
-    else
-      @ajax(
-        id:    'ticket_create',
-        type:  'GET',
-        url:   @apiPath + '/ticket_create',
-        processData: true,
-        success: (data, status, xhr) =>
-
-          # cache request
-          App.SessionStorage.set( 'ticket_create_attributes', data )
-
-          # get edit form attributes
-          @form_meta = data.form_meta
-
-          # load assets
       App.Collection.loadAssets(data.assets)
-
+      @formMeta = data.form_meta
       @render()
-      )
+    @bindId = App.TicketCreateCollection.one(load)
 
   render: (template = {}) ->
 
@@ -62,7 +31,7 @@ class Index extends App.ControllerContent
     if groupFilter
       if !_.isArray(groupFilter)
         groupFilter = [groupFilter]
-      @form_meta.filter.group_id = groupFilter
+      @formMeta.filter.group_id = groupFilter
 
     @html App.view('customer_ticket_create')(
       head: 'New Ticket'
@@ -77,7 +46,7 @@ class Index extends App.ControllerContent
       handlers: [
         @ticketFormChanges
       ]
-      filter:    @form_meta.filter
+      filter:    @formMeta.filter
       autofocus: true
       params:    defaults
     )
@@ -97,7 +66,7 @@ class Index extends App.ControllerContent
       handlers: [
         @ticketFormChanges
       ]
-      filter:     @form_meta.filter
+      filter:     @formMeta.filter
       params:     defaults
       noFieldset: true
     )
@@ -109,7 +78,7 @@ class Index extends App.ControllerContent
     #  handlers: [
     #    formChanges
     #  ]
-    #  filter:     @form_meta.filter
+    #  filter:    @formMeta.filter
     #  params:    defaults
     #)
 

app/assets/javascripts/app/controllers/ticket_zoom.coffee

@@ -17,7 +17,7 @@ class App.TicketZoom extends App.Controller
       App.TaskManager.remove(@task_key)
       return
 
-    @form_meta            = undefined
+    @formMeta             = undefined
     @ticket_id            = params.ticket_id
     @article_id           = params.article_id
     @sidebarState         = {}
@@ -235,7 +235,7 @@ class App.TicketZoom extends App.Controller
     @tags = data.tags
 
     # get edit form attributes
-    @form_meta = data.form_meta
+    @formMeta = data.form_meta
 
     # load assets
     App.Collection.loadAssets(data.assets)
@@ -331,7 +331,7 @@ class App.TicketZoom extends App.Controller
         ticket:    @ticket
         ticket_id: @ticket.id
         el:        @$('.article-new')
-        form_meta: @form_meta
+        formMeta:  @formMeta
         form_id:   @form_id
         defaults:  @taskGet('article')
         task_key:  @task_key
@@ -365,7 +365,7 @@ class App.TicketZoom extends App.Controller
         task_key:     @task_key
         tags:         @tags
         links:        @links
-        form_meta:    @form_meta
+        formMeta:     @formMeta
       )
 
     # show article

app/assets/javascripts/app/controllers/ticket_zoom/sidebar.coffee

@@ -33,7 +33,7 @@ class App.TicketZoomSidebar extends App.Controller
           handlers: [
             @ticketFormChanges
           ]
-          filter:    @form_meta.filter
+          filter:    @formMeta.filter
           params:    defaults
           #bookmarkable: true
         )

app/assets/javascripts/app/lib/app_post/_collection_base.coffee

@@ -0,0 +1,69 @@
+class App._CollectionSingletonBase
+  event: 'to_be_defined'
+  restEndpoint: '/to_be_defined'
+
+  constructor: ->
+    @callbacks = {}
+    @counter = 0
+
+    # read from cache
+    cache = App.SessionStorage.get("collection-#{@event}")
+    if cache
+      @set(cache)
+
+    # websocket updates
+    App.Event.bind @event, (data) =>
+      @set(data)
+      @callback(data)
+
+  get: ->
+    @collection_data
+
+  set: (data) ->
+    App.SessionStorage.set("collection-#{@event}", data)
+    @collection_data = data
+
+  bind: (callback, init = true, one = false) ->
+    @counter += 1
+
+    # start init call if needed
+    if init
+      if @collection_data is undefined
+        @fetch()
+      else
+        callback(@collection_data)
+        return if one
+
+    @callbacks[@counter] =
+      callback: callback
+      one: one
+
+  unbind: (callback) ->
+    for counter, attr of @callbacks
+      if callback is attr.callback
+        delete @callbacks[counter]
+
+  fetch: =>
+    return if @fetchActive
+    @fetchActive = true
+    App.Ajax.request(
+      id:    "collection-#{@event}"
+      type:  'GET'
+      url:   App.Config.get('api_path') + @restEndpoint
+      processData: true
+      success: (data) =>
+        @fetchActive = false
+        @set(data)
+        @callback(data)
+      error: =>
+        @fetchActive = false
+    )
+
+  trigger: =>
+    @callback(@get())
+
+  callback: (data) =>
+    for counter, attr of @callbacks
+      attr.callback(data)
+      if attr.one
+        delete @callbacks[counter]

app/assets/javascripts/app/lib/app_post/overview_index_collection.coffee

@@ -1,81 +1,24 @@
+class _Singleton extends App._CollectionSingletonBase
+  event: 'ticket_overview_index'
+  restEndpoint: '/ticket_overviews'
+
 class App.OverviewIndexCollection
-  _instance = undefined # Must be declared here to force the closure on the class
+  _instance = new _Singleton
 
   @get: ->
-    if _instance == undefined
-      _instance ?= new _Singleton
     _instance.get()
 
-  @bind: (callback) ->
+  @one: (callback, init = true) ->
-    if _instance == undefined
+    _instance.bind(callback, init, true)
-      _instance ?= new _Singleton
+
-    _instance.bind(callback)
+  @bind: (callback, init = true) ->
+    _instance.bind(callback, init, false)
 
   @unbind: (callback) ->
-    if _instance == undefined
-      _instance ?= new _Singleton
     _instance.unbind(callback)
 
   @trigger: ->
-    if _instance == undefined
-      _instance ?= new _Singleton
     _instance.trigger()
 
   @fetch: ->
-    if _instance == undefined
-      _instance ?= new _Singleton
     _instance.fetch()
-
-# The actual Singleton class
-class _Singleton
-  constructor: ->
-    @callbacks = {}
-    @counter = 0
-
-    # websocket updates
-    App.Event.bind 'ticket_overview_index', (data) =>
-      @overview_index = data
-      @callback(data)
-
-  get: ->
-    @overview_index
-
-  bind: (callback, init = true) ->
-    @counter += 1
-
-    # start init call if needed
-    if init
-      if @overview_index is undefined
-        @fetch()
-      else
-        @callback(@overview_index)
-
-    @callbacks[@counter] = callback
-
-  unbind: (callback) ->
-    for counter, localCallback of @callbacks
-      if callback is localCallback
-        delete @callbacks[counter]
-
-  fetch: =>
-    return if @fetchActive
-    @fetchActive = true
-    App.Ajax.request(
-      id:    'ticket_overviews',
-      type:  'GET',
-      url:   App.Config.get('api_path') + '/ticket_overviews',
-      processData: true,
-      success: (data) =>
-        @fetchActive = false
-        @overview_index = data
-        @callback(data)
-      error: =>
-        @fetchActive = false
-    )
-
-  trigger: =>
-    @callback(@get())
-
-  callback: (data) =>
-    for counter, callback of @callbacks
-      callback(data)

app/assets/javascripts/app/lib/app_post/ticket_create_collection.coffee

@@ -0,0 +1,24 @@
+class _Singleton extends App._CollectionSingletonBase
+  event: 'ticket_create_attributes'
+  restEndpoint: '/ticket_create'
+
+class App.TicketCreateCollection
+  _instance = new _Singleton
+
+  @get: ->
+    _instance.get()
+
+  @one: (callback, init = true) ->
+    _instance.bind(callback, init, true)
+
+  @bind: (callback, init = true) ->
+    _instance.bind(callback, init, false)
+
+  @unbind: (callback) ->
+    _instance.unbind(callback)
+
+  @trigger: ->
+    _instance.trigger()
+
+  @fetch: ->
+    _instance.fetch()

app/controllers/tickets_controller.rb

@@ -169,7 +169,7 @@ class TicketsController < ApplicationController
   def ticket_merge
 
     # check master ticket
-    ticket_master = Ticket.where( number: params[:master_ticket_number] ).first
+    ticket_master = Ticket.find_by(number: params[:master_ticket_number])
     if !ticket_master
       render json: {
         result: 'faild',
@@ -182,7 +182,7 @@ class TicketsController < ApplicationController
     return if !ticket_permission(ticket_master)
 
     # check slave ticket
-    ticket_slave = Ticket.where( id: params[:slave_ticket_id] ).first
+    ticket_slave = Ticket.find_by(id: params[:slave_ticket_id] )
     if !ticket_slave
       render json: {
         result: 'faild',
@@ -282,39 +282,31 @@ class TicketsController < ApplicationController
     }
   end
 
-  # GET /api/v1/ticket_create/1
+  # GET /api/v1/ticket_split
+  def ticket_split
+
+    # permission check
+    ticket = Ticket.find(params[:ticket_id])
+    return if !ticket_permission(ticket)
+    assets = ticket.assets({})
+
+    # get related articles
+    article = Ticket::Article.find(params[:article_id])
+    assets = article.assets(assets)
+
+    render json: {
+      assets: assets
+    }
+  end
+
+  # GET /api/v1/ticket_create
   def ticket_create
 
     # get attributes to update
     attributes_to_change = Ticket::ScreenOptions.attributes_to_change(
       user: current_user,
-      ticket_id: params[:ticket_id],
-      article_id: params[:article_id]
     )
-
+    render json: attributes_to_change
-    assets = attributes_to_change[:assets]
-    # split data
-    split = {}
-    if params[:ticket_id] && params[:article_id]
-      ticket = Ticket.find( params[:ticket_id] )
-      split[:ticket_id] = ticket.id
-      assets = ticket.assets(assets)
-
-      # get related articles
-      article = Ticket::Article.find( params[:article_id] )
-      split[:article_id] = article.id
-      assets = article.assets(assets)
-    end
-
-    # return result
-    render json: {
-      split: split,
-      assets: assets,
-      form_meta: {
-        filter: attributes_to_change[:filter],
-        dependencies: attributes_to_change[:dependencies],
-      }
-    }
   end
 
   # GET /api/v1/tickets/search

app/models/ticket/screen_options.rb

@@ -99,9 +99,11 @@ returns
 
     {
       assets: assets,
+      form_meta: {
         filter: filter,
         dependencies: dependencies,
       }
+    }
   end
 
 =begin

config/routes/ticket.rb

@@ -9,6 +9,7 @@ Zammad::Application.routes.draw do
   match api_path + '/tickets',                                       to: 'tickets#create',            via: :post
   match api_path + '/tickets/:id',                                   to: 'tickets#update',            via: :put
   match api_path + '/ticket_create',                                 to: 'tickets#ticket_create',     via: :get
+  match api_path + '/ticket_split',                                  to: 'tickets#ticket_split',      via: :get
   match api_path + '/ticket_full/:id',                               to: 'tickets#ticket_full',       via: :get
   match api_path + '/ticket_history/:id',                            to: 'tickets#ticket_history',    via: :get
   match api_path + '/ticket_customer',                               to: 'tickets#ticket_customer',   via: :get

lib/sessions/backend/ticket_create.rb

@@ -39,17 +39,9 @@ class Sessions::Backend::TicketCreate
     # set new timeout
     Sessions::CacheIn.set( client_key, true, { expires_in: @ttl.seconds } )
 
-    ticket_create_attributes = load
+    data = load
 
-    return if !ticket_create_attributes
+    return if !data
-
-    data = {
-      assets: ticket_create_attributes[:assets],
-      form_meta: {
-        filter: ticket_create_attributes[:filter],
-        dependencies: ticket_create_attributes[:dependencies],
-      }
-    }
 
     if !@client
       return {