first draft for the json template response (tested on sorting pages)

app/assets/javascripts/locomotive/application.js.coffee

@@ -1,6 +1,5 @@
 #= require_self
 #= require_tree .
-#= require_tree ./templates
 #= require_tree ./models
 #= require_tree ./views
 #= require_tree ./routers

app/assets/javascripts/locomotive/views/pages/list_view.js.coffee

@@ -12,6 +12,37 @@ class Locomotive.Views.Pages.ListView extends Backbone.View
     return @
 
   make_sortable: ->
+    self = @
+
+    @$('ul.folder').sortable
+      handle: 'em'
+      axis:   'y'
+      update: (event, ui) -> self.call_sort $(@)
+
+  call_sort: (folder) ->
+    $.rails.ajax
+      url:        folder.attr('data-url')
+      type:       'post'
+      dataType:   'json'
+      data:
+        children: (_.map folder.sortable('toArray'), (el) -> el.replace('item-', ''))
+        _method:  'put'
+      success:    @.on_successful_sort
+      error:      @.on_failed_sort
+
+  # on_sort: (data) ->
+  on_successful_sort: (data, status, xhr) ->
+    window.foo = xhr
+    $.growl('success', xhr.getResponseHeader('Flash'));
+
+  on_failed_sort: (data, status, xhr) ->
+    $.growl('error', xhr.getResponseHeader('Flash'));
+
+        # $.post($(@).attr('data-url'), params, function(data) {
+        #   var error = typeof(data.error) != 'undefined';
+        #   $.growl((error ? 'error' : 'success'), (error ? data.error : data.notice));
+        # }, 'json');
+
     # TODO
     # $('#pages-list ul.folder').sortable({
     #   'handle': 'em',

lib/locomotive/responder.rb

@@ -8,14 +8,6 @@ module Locomotive
       super || has_errors?
     end
 
-    def api_behavior(error)
-      puts "api_behavior here"
-
-      super
-
-      puts "api_behavior there"
-    end
-
     # def api_behavior(error)
     #   raise error unless resourceful?
     #
@@ -31,6 +23,8 @@ module Locomotive
     # end
 
     def to_json
+
+
       if get?
         display resource
       elsif has_errors?
@@ -38,12 +32,37 @@ module Locomotive
       elsif post?
         display resource, :status => :created, :location => api_location
       elsif put?
-        display resource, :status => :ok, :location => api_location
+        with_flash_message(:notice) do |message|
+          # puts "put ? yes #{controller.flash[:notice]} / #{resource.inspect}"
+          # controller.headers[:notice] => controller.flash[:notice]
+          puts "put ? yes, message = #{message}"
+
+          display resource, :status => :ok, :location => api_location
+        end
       elsif has_empty_resource_definition?
         display empty_resource, :status => :ok
       else
-        head :ok
+        # head :ok
+        puts "youpi !!!"
+        display :notice => controller.flash[:notice], :status => :ok
       end
+
+      controller.flash.discard # reset flash messages !
+    end
+
+    protected
+
+    def with_flash_message(type)
+      puts "@alert = #{@alert} / @notice = #{@notice}"
+      set_flash_message!
+      message = controller.flash[type]
+
+      # controller.headers[:"flash-#{type.to_s.capitalize}"] = message
+      controller.headers[:flash] = message
+
+      yield(message) if block_given?
+
+      controller.flash.discard # reset flash messages !
     end
 
     # def api_behavior(error)