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Editorial Team
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Asked: 2026-06-17T08:01:30+00:00

I set up a rails 3.2.11 application using Devise for authentication. I want to

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I set up a rails 3.2.11 application using Devise for authentication.
I want to use ember.js as an mvc framework.

When I launch an ajax call to the POST /users.json route I get a 406 Not Acceptable.

Here is my ajax call :

urlBase : '/users'

signup : (username, email, password, passwordConfirmation) ->
  $.ajax
    url: "#{@.get('urlBase')}.json"
    type: "POST"
    dataType: "json"
    data:
      "user[username]": username
      "user[email]": email
      "user[password]": password
      "user[password_confirmation]": passwordConfirmation

    success: (data) ->
      alert('Completed sign up process: '+ JSON.stringify(data));
      @errorMsg = "Signed up successfully." 

    error: (jqXHR, textStatus, errorThrown) ->
      alert "Error completing sign up: " + textStatus + " error: " + errorThrown

Here are the logs : 

Started POST "/users.json" for 127.0.0.1 at 2013-01-14 14:38:57 +0100
Processing by Devise::RegistrationsController#create as JSON
  Parameters: {"user"=>{"username"=>"obo", "email"=>"obo@obo.dv", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}}
   (1.3ms)  begin transaction
  User Exists (1.3ms)  SELECT 1 AS one FROM "users" WHERE "users"."email" = 'obo@obo.dv' LIMIT 1
   (0.1ms)  rollback transaction
Completed 406 Not Acceptable in 311ms (ActiveRecord: 2.6ms)

I do not understand why this happens.

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1 Answer

  1. Editorial Team

    Zajn’s answer explains that DeviseController now responds only to HTML format (since version 2.2.0).
    The changelog say to add the JSON format to the DeviseController.respond_to.

    I did it subclassing SessionsController and RegistrationsController and adding respond_to :json : 

    class RegistrationsController < Devise::RegistrationsController
  respond_to :json
end

class SessionsController < Devise::RegistrationsController
  respond_to :json
end
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