Add a /latest JSON endpoint. [#8697731]

app/controllers/main_controller.rb

@@ -18,11 +18,24 @@ def settings
   def publisher
     @publisher = Publisher.where(:slug => params[:slug]).first
   end
-
+
+  def latest
+    if params[:since_id] == 0
+      @activities = Activity.any_in(:publisher_ids => params[:following_ids].split(',')).
+                             desc(:_id).
+                             limit(20)
+    else
+      @activities = Activity.where(:_id.gt => BSON.ObjectId(params[:since_id])).
+                             any_in(:publisher_ids => params[:following_ids].split(',')).
+                             desc(:_id)
+    end
+    render :json => @activities
+  end
+
   def activity
     @activity = Activity.find(params[:id])
   end
-  
+
   def comment
     @activity = Activity.find(params[:id])
     @activity.comments.create(:body => params[:body],
@@ -31,11 +44,10 @@ def comment
     @activity.save
     redirect_to :back
   end
-  
+
   def user_agent_check
     agent = Agent.new request.env["HTTP_USER_AGENT"]
     redirect_to chrome_path unless agent.name == :Chrome
   end
-
-
+
 end

config/routes.rb

@@ -7,10 +7,11 @@
   match 'auth' => 'sessions#new', :as => :auth
   match 'out' => 'sessions#destroy', :as => :out
 
+  match 'latest' => 'main#latest', :as => :latest
   match 's/:slug' => 'main#publisher', :as => :publisher
   match 'a/:id' => 'main#activity', :as => :activity
   match 'a/:id/comment' => 'main#comment', :as => :comment
-  
+
   resource :session
 
 end