Strong parameters with Rails 4.0 and Devise - ruby-on-rails-4

Question

I am using Rails 4.2 and devise.Request type will always be JSON.My registrations controller looks like this
class Users::RegistrationsController < Devise::RegistrationsController
before_filter :configure_sign_up_params, only: [:create]
def create
if request.format(request) == "application/json"
build_resource(sign_up_params)
if resource.save
render :json => {:success => "true", :message => "Thank You For Registering."}
else
render :json => {:success => "false", :message => resource.errors.full_messages}
end
else
super
end
end
protected
def configure_sign_up_params
devise_parameter_sanitizer.for(:sign_up) do |u|
u.permit(:email, :password, :password_confirmation)
end
end
end
The parameters that show-up in the console is like :
Parameters: {"email"=>"test123#gmail.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "registration"=>{"email"=>"test123#gmail.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}}
The error it produces is that the controller doesn't recognize the email and password fields and always returns error like :
["Email can't be blank","Password can't be blank"]
Does this happen because of any foolishness that I have written in the code?Please help

Answer 1

Your configure_sign_up_params method has to be something like this to work.
def configure_sign_up_params
devise_parameter_sanitizer.for(:registration) do |u|
u.permit(:email, :password, :password_confirmation)
end
end
If you can see the console content what you have posted, it contains a hash with registration as a key:
"registration"=>{"email"=>"test123#gmail.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}