How to call a rails method from in jQuery

Question

I have this JQuery code:

$("p.exclamation, div#notification_box").live("mouseover", function() {      }); 

and I want to call this rails method from inside the jQuery code as a callback:

def render_read   self.user_notifications.where(:read => false).each do |n|     n.read = true     n.save   end end 

This method is in my user model. Is there any way to do this?

Answer 1

Make an AJAX call, set up a route, respond with a controller action and call your method.

# whatever.js $("p.exclamation, div#notification_box").on("mouseover", function() {   $.ajax("/users/render_read") });  # routes.rb resources :users do   get :render_read, on: :collection    # or you may prefer to call this route on: :member end  # users_controller.rb def render_read   @current_user.render_read   # I made this part up, do whatever necessary to find the needed user here end 

PS: This code is for Rails 3.x and Ruby 1.9.x

Answer 2

It's good that you have that model code. We'll need to add a new action and make sure your route is setup. If you're using resources you'll have to add collection or member. Since you're doing an update I would choose PUT as the http method.

Here's an example route:

resources :user_notifications do   collection do     put 'render_read'   end end 

Go ahead and add the render_read action to your controller.

Your jQuery code will look something like this:

$("p.exclamation, div#notification_box").live("mouseover", function() {      $.ajax({     url: "/user_notifications/render_read",     type: 'PUT'   }); });