Routing error in rails

In my controller I have

  def update_project_dates        p "It is end date....."       @user=User.find(params[:user])        @projects=Project.find_all_by_user_id(@user)

   end

In the view page (only some part of the code is copied and pasted)

eventDrop: function()              {                $.ajax({                  url:'/update_project_dates/',                  success:function(data)                  {                  alert("Hello");                  }                })              },

In my routes.rb I have mentioned

match '/update_project_dates'=>'users#update_project_dates',:method=>:get get 'update_project_dates'

But When the ajax request goes, I get the routing error as <h1>Routing Error</h1> <p><pre>uninitialized constant UsersController</pre></p>

Where am I doing wrong here...Please help..