Reduced amount of refresh (-> rerender) events.

app/assets/javascripts/app/controllers/_channel/form.coffee

@@ -12,7 +12,7 @@ class App.ChannelForm extends App.Controller
   constructor: ->
     super
     @title 'Form'
-    @subscribeId = App.Setting.subscribe(@render, initFetch: true)
+    @subscribeId = App.Setting.subscribe(@render, initFetch: true, clear: false)
 
   render: =>
     App.Setting.unsubscribe(@subscribeId)

app/assets/javascripts/app/controllers/_settings/area.coffee

@@ -5,20 +5,7 @@ class App.SettingsArea extends App.Controller
     # check authentication
     return if !@authenticate()
 
-    @load()
+    @subscribeId = App.Setting.subscribe(@render, initFetch: true, clear: false)
-
-  load: ->
-    @startLoading()
-    @ajax(
-      id:    "setting_area_#{@area}"
-      type:  'GET'
-      url:   "#{@apiPath}/settings/area/#{@area}"
-      processData: true
-      success: (data, status, xhr) =>
-        @stopLoading()
-        App.Collection.load( sessionStorage: false, type: 'Setting', data: data )
-        @render()
-    )
 
   render: =>
 

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

@@ -85,16 +85,23 @@ class _collectionSingleton extends Spine.Module
       return
 
     # load data from object
+    listToRefresh = []
     for key, object of params.data
       if !params.refresh && appObject
+        @log 'debug', 'refrest try', params.type, key
 
         # check if new object is newer, just load newer objects
         if object.updated_at && appObject.exists(key)
           exists = appObject.find(key)
           if exists.updated_at
             if exists.updated_at < object.updated_at
-              appObject.refresh(object)
+              listToRefresh.push object
+              @log 'debug', 'refrest newser', params.type, key
           else
-            appObject.refresh(object)
+            listToRefresh.push object
+            @log 'debug', 'refrest try no updated_at', params.type, key
         else
-          appObject.refresh(object)
+          listToRefresh.push object
+          @log 'debug', 'refrest new', params.type, key
+    return if _.isEmpty(listToRefresh)
+    appObject.refresh(listToRefresh)

app/assets/javascripts/app/models/_application_model.coffee

@@ -335,13 +335,16 @@ class App.Model extends Spine.Model
 
     # fetch init collection
     if param.initFetch is true
+      clear = true
+      if param.clear is true || param.clear is false
+        clear = param.clear
       if !@initFetchActive
         @one 'refresh', (collection) =>
           @initFetchActive = true
           callback(collection)
         @fetchFull(
           ->
-          clear: true
+          clear: clear
         )
       else
         callback(@all())

app/controllers/settings_controller.rb

@@ -6,14 +6,6 @@ class SettingsController < ApplicationController
   # GET /settings
   def index
     return if deny_if_not_role(Z_ROLENAME_ADMIN)
-
-    # only serve requested items
-    if params[:area]
-      model_index_render_result( Setting.where(area: params[:area]) )
-      return
-    end
-
-    # serve all items
     model_index_render(Setting, params)
   end