Improve remove creation using Ajax

app/controllers/admin/rooms_controller.rb

@@ -3,6 +3,7 @@ module Admin
     load_and_authorize_resource :conference, find_by: :short_title
     load_and_authorize_resource :venue, through: :conference, singleton: true
     load_and_authorize_resource through: :venue
+    after_action :prepare_unobtrusive_flash, only: [:create]
 
     def index; end
 
@@ -14,12 +15,13 @@ module Admin
 
     def create
       @room = @venue.rooms.new(room_params)
-      if @room.save
-        redirect_to admin_conference_venue_rooms_path(conference_id: @conference.short_title),
-                    notice: 'Room successfully created.'
-      else
-        flash.now[:error] = "Creating Room failed: #{@room.errors.full_messages.join('. ')}."
-        render :new
+      respond_to do |format|
+        if @room.save
+          flash.now[:notice] = 'Room successfully created.'
+        else
+          flash.now[:error] = "Creating Room failed: #{@room.errors.full_messages.join('. ')}."
+        end
+        format.js
       end
     end
 

app/views/admin/rooms/_form.html.haml

@@ -8,8 +8,8 @@
         = @room.name
 .row
   .col-md-8
-    = semantic_form_for(@room, url: (@room.new_record? ? admin_conference_venue_rooms_path : admin_conference_venue_room_path(@conference.short_title, @room))) do |f|
-      = f.input :name, input_html: { autofocus: true}
-      = f.input :size, input_html: {size: 5}
+    = semantic_form_for(@room, url: (@room.new_record? ? admin_conference_venue_rooms_path : admin_conference_venue_room_path(@conference.short_title, @room)), remote: (true if @room.new_record?)) do |f|
+      = f.input :name, input_html: { autofocus: true}, id: 'room_name'
+      = f.input :size, input_html: {size: 5}, id: 'room_size'
       %p.text-right
         = f.action :submit, as: :button, button_html: { class: 'btn btn-primary' }

app/views/admin/rooms/create.js.erb

@@ -0,0 +1,2 @@
+$('#room_name').val('');
+$('#room_size').val('');

app/views/layouts/_admin.html.haml

@@ -8,7 +8,7 @@
         -# Index admin sidebar
         = render 'layouts/admin_sidebar_index'
     .col-md-10
-      #messages
+      #messages.unobtrusive-flash-container
         =render 'layouts/messages'
       #content
-        = yield
+        = yield