participate idea

app/controllers/ideas_controller.rb

@@ -27,9 +27,12 @@ def update
   end
 
   def participate
-    @user = User.find(params[:user_id])
-    IdeaUser.create(:idea_id => @idea.id, :user_id => current_user.id)
-    @ideas = Idea.includes(:users)
+    if @idea.users.include?(current_user)
+      flash[:error] = 'You are already participating this idea'
+    else
+      @idea.users << current_user
+    end
+    redirect_to :action => :index
   end
 
   private

app/views/ideas/index.html.haml

@@ -6,7 +6,7 @@
         %p= idea.description
         %h3 #{idea.users.count} Participating....
         - unless idea.users.include?(current_user)
-          = link_to 'Participate', idea_participate_path(idea.id), :class => 'participate btn'
+          = link_to 'Participate', participate_idea_path(idea), :class => 'participate btn'
 
 :javascript
   $('.idea').click(function(){ window.location = $(this).attr('link') })

config/routes.rb

@@ -8,11 +8,8 @@
   match '/auth/failure' => 'services#failure'
 
   resources :ideas do
-    get 'participate'
+    get 'participate', :on => :member
   end
-
-  match '/ideas/:id/participate/:user_id' => 'ideas#participate', :as => :participate
-
   resources :schedules
 
   # used for the demo application only