Get contributed projects only if push event exists

app/models/user.rb

@@ -607,4 +607,12 @@ class User < ActiveRecord::Base
   def oauth_authorized_tokens
     Doorkeeper::AccessToken.where(resource_owner_id: self.id, revoked_at: nil)
   end
+
+  def contributed_projects_ids
+    Event.where(author_id: self).
+      code_push.
+      reorder(project_id: :desc).
+      select('DISTINCT(project_id)').
+      map(&:project_id)
+  end
 end

app/views/users/calendar.html.haml

-%h4 Calendar
+%h4 Commits calendar
 #cal-heatmap.calendar
   :javascript
     new calendar(