ruby - Devise - Sign In with Ajax -


is here possibility modify devise sessionscontroller ajax communication?

edit

i found solution, , posted answers, thanks

1. generate devise controllers can modify it

rails g devise:controller

enter image description here

now have controllers in app/controllers/[model] directory

2. edit routes.rb

let's set devise use our modified sessionscontroller

first add code (of course change :users devise model) config/routes.rb

devise_for :users, controllers: {   sessions: 'users/sessions' }

3. modify sessions_controller.rb

enter image description here

find create method , change to

def create   resource = user.find_for_database_authentication(email: params[:user][:email])   return invalid_login_attempt unless resource    if resource.valid_password?(params[:user][:password])     sign_in :user, resource     return render nothing: true   end    invalid_login_attempt  end

create new method after protected

def invalid_login_attempt   set_flash_message(:alert, :invalid)   render json: flash[:alert], status: 401 end

4. devise.rb

insert config/initializers/devise.rb

config.http_authenticatable_on_xhr = false config.navigational_formats = ["*/*", :html, :json]

5. invalid email or password message

insert new message config/locales/devise.en.yml under sessions

invalid: "invalid email or password."

sessions

6. view

= form_for resource, url: session_path(:user), remote: true |f|   = f.text_field :email   = f.password_field :password   = f.label :remember_me     remember me     = f.check_box :remember_me   = f.submit value: 'sign in'  :javascript   $(document).ready(function() {     //form id     $('#new_user')     .bind('ajax:success', function(evt, data, status, xhr) {       //function called on status: 200 (for ex.)       console.log('success');     })     .bind("ajax:error", function(evt, xhr, status, error) {       //function called on status: 401 or 500 (for ex.)       console.log(xhr.responsetext);     });   });

important thing remote: true

the reason why using status 200 or 401 unlike {status: 'true'} less data size, faster , cleaner.

explanation

on signing in, these data in params

action: "create" commit: "sign in" controller: "users/sessions" user: {   email: "test@test.cz"   password: "123"   remember_me: "0" } utf8: "✓"

before signing, need authorize user.

resource = user.find_for_database_authentication(email: params[:user][:email])

user.find_for_database_authentication

if user found, resource filled like

created_at: "2015-05-29t12:48:04.000z" email: "test@test.cz" id: 1 updated_at: "2015-06-13t19:56:54.000z"

otherwise be

null

if user authenticated, validate password

if resource.valid_password?(params[:user][:password])

and sign in

sign_in :user, resource

sources

sessionscontroller

helped me andreas lyngstad


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