Rail Devise creat own sign_in and sign_out actions

Question

I have the following problems with dives in rails.

All requests and response are JSON

After I sign in /partners/sign_in I get the following response:

HTTP/1.1 200 OK {"success":true}

And after i signed out /partners/sign_out I get thie following response:

HTTP/1.1 200 OK {"success":true}

Now my Question: How can I create my own RegisterController and HOW it looks like, are there any examples? I have searched at github/devise but not find any examples.

I want to response something other, and if the authentication fails I want to response HTTP 404 ERROR

routes.rb

devise_for :partners, :controllers => { :sessions => "sessions" }

session_controller.rb

  class SessionsController < Devise::SessionsController

  def create
    resource = warden.authenticate!(:scope => resource_name, :recall => :failure)
    return sign_in_and_redirect(resource_name, resource)
  end

  def destroy
    redirect_path = after_sign_out_path_for(resource_name)
    signed_out = (Devise.sign_out_all_scopes ? sign_out : sign_out(resource_name))
    set_flash_message :notice, :signed_out if signed_out

    respond_to do |format|
      format.html { redirect_to redirect_path }
      format.json { render :json => {:success => true} }
    end
  end

  private

  def sign_in_and_redirect(resource_or_scope, resource=nil)
    scope = Devise::Mapping.find_scope!(resource_or_scope)
    resource ||= resource_or_scope
    sign_in(scope, resource) unless warden.user(scope) == resource
    return render :json => {:success => true}
  end

  def failure
    return render:json => {:success => false, :errors => ["Login failed."]}
  end
end

Answer 1

The ActionController's render method takes hash with :status as the key. Here you can specify the HTTP error status code or the symbol for that status code:

render json: {success: false, errors: ["Login Failed"]}, status: 404  
# or the following is a preferred way
render json: {success: false, errors: ["Login Failed"]}, status: :not_found

Here the documentation for render method.
And here is an excellent documentation by Cody Fauser of rails status code to symbol mapping

One Observation:

It is not idiomatic in Ruby to use return statements at the end of a function because the last expression's return value is the return value of the function.