idify/sample_devise_app

sample_devise_app

To add devise gem in project

1. add devise gem in gem file then bundle install

2)Then execute command rails generate devise:install 3) then rake db:create

4. execute this command to save user cradential for log in and authentication and name it as per requirment
   rails generate devise MODEL

5. after signin describe where to redirect in routes file for example root to: "home#index"

6. to install devise view rails g devise:views

7. add this line line in config/environments/development.rb file config.action_mailer.default_url_options = { :host => 'localhost:3000' }

8. add these lines in layout/application.html.erb file for error messages and notice

<%= notice %>

<%= alert %>

9) to activate remember me obtion add it in devise in user.rb file and paste this line in config/initialise/devise.rb file Devise::TRUE_VALUES << ["on"] 10) to activate timeoutable function in devise add this code in user.rb file # to customise timeoutable def timeout_in 60.seconds #time according to requirment end 11) to activate lockable

in config/initialise/devise add these line to lock reasion and also to give warning config.lock_strategy = :failed_attempts config.maximum_attempts = 3 config.last_attempt_warning = true to unlock two stretrgies are to define add these lines config.unlock_strategy = :both after this time account unlock automatically config.unlock_in = 1.hour or can unlock through your domain id from which you create account 7) password reset after first log in add in config/initialise/devise config.reset_password_within = 6.hours 8) to reset password length config.password_length = 8..128 9) to activate confirmable add it in devise in user.rb and create migration to add columns to user model add_column :users, :confirmation_token, :string add_column :users, :confirmed_at, :datetime add_column :users, :confirmation_sent_at , :datetime add_column :users, :unconfirmed_email, :string

add_index  :users, :confirmation_token, :unique => true

and add these code in ActionMailer::Base.delivery_method = :smtp ActionMailer::Base.smtp_settings = { :address => "smtp.gmail.com", :port => 587, :domain => "gmail.com", :user_name => "sachinidify@gmail.com" , :password => "12345qwert@", :authentication => "plain", :enable_starttls_auto => true }

10)The time the user will be remembered without asking for credentials again. config.remember_for = 2.days 11) add omniauth in devise it is used to authenticate through third party like facebook ,twitter and gmail

• for facebook add omniauthable in devise and then add these gem in gem file gem 'omniauth' gem 'omniauth-facebook' *Add columns "provider", "uid" and "name" to your User model rails g migration AddColumnsToUsers provider uid name *add these in attr_accessible :provider, :uid, :name *add these lines in config/initializers/devise.rb require "omniauth-facebook" config.omniauth :facebook, "561221117304359", "b16a1c14eb52aad5341247ef20bc319a", :strategy_class => OmniAuth::Strategies::Facebook

config.omniauth :facebook, ENV['facebook_code'], ENV['facebook_SECRET'], :client_options => {:ssl => {:ca_path => '/etc/ssl/certs'}}

• add this in devise :omniauthable, :omniauth_providers => [:facebook] in array we can pass how much provider we need like facebook,gmail twitter

• genrate omniouth controller and exten it from devise example class OmniauthCallbacksController < Devise::OmniauthCallbacksController def facebook

  You need to implement the method below in your model (e.g. app/models/user.rb)

  @user = User.find_for_facebook_oauth(request.env["omniauth.auth"], current_user)

  if @user.persisted? sign_in_and_redirect @user, :event => :authentication #this will throw if @user is not activated set_flash_message(:notice, :success, :kind => "Facebook") if is_navigational_format? else session["devise.facebook_data"] = request.env["omniauth.auth"] redirect_to new_user_registration_url end end end *add these method in user.rb file def self.new_with_session(params, session) super.tap do |user| if data = session["devise.facebook_data"] && session["devise.facebook_data"]["extra"]["raw_info"] user.email = data["email"] if user.email.blank? end end end

  def self.find_for_facebook_oauth(auth, signed_in_resource=nil) user = User.where(:provider => auth.provider, :uid => auth.uid).first unless user user = User.create(name:auth.extra.raw_info.name, provider:auth.provider, uid:auth.uid, email:auth.info.email, password:Devise.friendly_token[0,20] ) end user end

• add these lines in config/routes.rb file devise_for :users, :controllers => { :omniauth_callbacks => "users/omniauth_callbacks" }

facebook omniouth ready to work

12. to add omniauth for Gmail add gem 'omniauth-google-oauth2' and then bundle install *devise :omniauthable, :omniauth_providers => [:google_oauth2] *add this code in omniouthcontroller def google_oauth2

    You need to implement the method below in your model (e.g. app/models/user.rb)

    @user = User.find_for_google_oauth2(request.env["omniauth.auth"], current_user)

    if @user.persisted? flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Google"

    sign_in_and_redirect @user, :event => :authentication
    

    else session["devise.google_data"] = request.env["omniauth.auth"] redirect_to new_user_registration_url end end

*add this code in user.rb file def self.find_for_google_oauth2(access_token, signed_in_resource=nil) data = access_token.info user = User.where(:email => data["email"]).first

unless user
    user = User.create(name: data["name"],
         email: data["email"],
         uid: access_token.uid,
         provider: access_token.provider,
         password: Devise.friendly_token[0,20]
        )
end
user

end

*inconfig/initilise/devise.rb add this #for gmail account require "omniauth-google-oauth2" config.omniauth :google_oauth2, ENV['gmail_KEY'], ENV['gmail_SECRET'], { access_type: "offline", approval_prompt: "" }

13. to add omniauth for twwiter *add gem 'omniauth-twitter' then bundle install