ruby on rails - ActionController::UnknownFormat respond_with using Backbone.js -

I am trying to get data in my archive, but I get an unknown format error in the rail. I have been following the railcast to know about the spinal cord.

I am on the part where we are providing data in a view through the archive, but when I use the example code unknown format error

This is my Rail Films Controller

  ClassroomController class & lt; ApplicationController response_to: response to json dff index_in if movie.all? @user = User.find (session [: user_id]) @ movies = @ user.movies End End  

This is my Rail Router file,

  Rails.application.routes.draw 'session / new' root 'movies # index' get 'signup' = & gt; get receive. 'User #' Get New 'Login' = & gt; 'Session # new' post 'login' = & gt; 'Create session' to delete 'logout' = & gt; 'Session # deleted' scope "API" do the resources: movies ,: fault = & gt; {: Format = & gt; "JSON"} End Resource: User  

And this is my backbone collection

class Movieseat.Collections.Movieseats increases the Backbone.Collection url: / Api / movies'

I have done some research and have found that many people say that I ,: defaults = & gt; {: Format = & gt; "Json"} In my film resource but it has not helped me Do anyone know what is the reason for this error?

I have problems today I have two potential improvements for this ...

1) Just answer the sentence-sentence, remove it with syntax and replace it with the render Jason syntax:

  Class Films Controller & lt ; ApplicationController def index @movies = Movie.all if log in_in? @ User = user.fid (session [: user_id]) @ mvs = @ user Amovis and Render Jason: @ Films.t_json and end  

I think it can not be ideal, but what is it for me?

2) It I have not tried, but it may be worth a try (can not be used with the first solution).

Anywhere in your spinal setup:

  $ AjaxSetup ({dataType: 'json'});