En su caso específico se puede pensar que maquinan permite a su aplicación para autenticar a los usuarios mediante un formulario (por ejemplo: mediante el uso de un correo electrónico y una contraseña) o un token de autenticación, Omniauth le permite a su aplicación "hablar" a los servidores de Facebook para autenticar a un usuario. En otras palabras, Omniauth se encuentra en la parte superior de Devise y extiende la cantidad de formas en que su usuario puede autenticarse.
Para implementar Facebook Tiene que:
0) Configurar legado: sólo tienes que seguir el siguiente: https://github.com/plataformatec/devise/wiki/OmniAuth:-Overview
1) exponer un enlace en su opinión de que, cuando el usuario haga clic dirá OmniAuth para empezar " hablando "al servidor de Facebook.
=link_to image_tag("facebook_64.png", :size => "64x64", :alt => "Facebook"), user_omniauth_authorize_path(:facebook, :display=>"dialog"), :title=>"Facebook"
2) En un momento el servidor de Facebook le llamará aplicación por lo que tiene que implementar un controlador para responder a Facebook
class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
before_filter { @omniauth_hash = env["omniauth.auth"] }
# This method is responsible to create a registration_hash given an
# omniaauth_hash
# schama: https://github.com/intridea/omniauth/wiki/Auth-Hash-Schema
def self.build_registration_hash(omniauth_hash={})
if (omniauth_hash["provider"].downcase.eql?("facebook"))
provider = "facebook"
# catch any excpetions thrown by code just to make sure we can continue even if parts of the omnia_has are missing
begin
first_name = omniauth_hash['user_info']['first_name']
last_name = omniauth_hash['user_info']['last_name']
sex = omniauth_hash.fetch('extra', {}).fetch('user_hash',{})['gender']
birthday = Date.strptime(omniauth_hash.fetch('extra', {}).fetch('user_hash', {})['birthday'],'%m/%d/%Y') if omniauth_hash.fetch('extra', {}).fetch('user_hash', {})['birthday']
if omniauth_hash.fetch('extra', {}).fetch('user_hash', {})['timezone']
utc_offset_in_hours = (omniauth_hash.fetch('extra', {}).fetch('user_hash', {})['timezone']).to_i
time_zone = (ActiveSupport::TimeZone[utc_offset_in_hours]).name
else
time_zone = nil
end
locale = omniauth_hash.fetch('extra', {}).fetch('user_hash', {})['locale']
home_town = omniauth_hash.fetch('extra', {}).fetch('user_hash', {}).fetch('location', {})['name']
if omniauth_hash.fetch('user_info', {})['image']
photo_url = (omniauth_hash.fetch('user_info', {})['image']).gsub("=square","=large") #http://graph.facebook.com/531564247/picture?type=square
else
photo_url = nil
end
rescue => ex
logger.error("Error while parsing facebook auth hash: #{ex.class}: #{ex.message}")
sex = nil
birthday = nil
time_zone = nil
locale = nil
home_town = nil
photo_url = nil
end
elsif omniauth_hash['uid'].downcase.include?("google.com")
provider = "google"
if omniauth_hash['user_info']['first_name'] and omniauth_hash['user_info']['last_name']
first_name = omniauth_hash['user_info']['first_name']
last_name = omniauth_hash['user_info']['last_name']
elsif omniauth_hash['user_info']['name']
first_name = omniauth_hash['user_info']['name'].split(' ')[0]
last_name = omniauth_hash['user_info']['name'].split(' ')[1]
else
first_name = nil
last_name = nil
end
sex = nil
birthday = nil
time_zone = nil
locale = nil
home_town = nil
photo_url = nil
elsif omniauth_hash['uid'].downcase.include?("yahoo.com")
provider = "yahoo"
if omniauth_hash['user_info']['first_name'] and omniauth_hash['user_info']['last_name']
first_name = omniauth_hash['user_info']['first_name']
last_name = omniauth_hash['user_info']['last_name']
elsif omniauth_hash['user_info']['name']
first_name = omniauth_hash['user_info']['name'].split(' ')[0]
last_name = omniauth_hash['user_info']['name'].split(' ')[1]
else
first_name = nil
last_name = nil
end
sex = nil
birthday = nil
time_zone = nil
locale = nil
home_town = nil
photo_url = nil
elsif omniauth_hash['uid'].downcase.include?("aol.com")
if omniauth_hash['user_info']['first_name'] and omniauth_hash['user_info']['last_name']
first_name = omniauth_hash['user_info']['first_name']
last_name = omniauth_hash['user_info']['last_name']
elsif omniauth_hash['user_info']['name']
first_name = omniauth_hash['user_info']['name'].split(' ')[0]
last_name = omniauth_hash['user_info']['name'].split(' ')[1]
else
first_name = nil
last_name = nil
end
provider = "aol"
sex = nil
birthday = nil
time_zone = nil
locale = nil
home_town = nil
photo_url = nil
else
provider = "open_id"
if omniauth_hash['user_info']['first_name'] and omniauth_hash['user_info']['last_name']
first_name = omniauth_hash['user_info']['first_name']
last_name = omniauth_hash['user_info']['last_name']
elsif omniauth_hash['user_info']['name']
first_name = omniauth_hash['user_info']['name'].split(' ')[0]
last_name = omniauth_hash['user_info']['name'].split(' ')[1]
else
first_name = nil
last_name = nil
end
sex = nil
birthday = nil
time_zone = nil
locale = nil
home_town = nil
photo_url = nil
end
h = {
:provider => provider,
:email => omniauth_hash['user_info']['email'],
:profile_attributes => {
:first_name => first_name ,
:last_name => last_name,
:avatar_url => photo_url,
:sex => sex,
:birthday => birthday,
:time_zone => time_zone,
:locale => locale,
:location => home_town
}
}
end
def process_callback
# The registration hash isolates the rest of the code from learning all the different structures
# of the omnia_hash
registration_hash = Users::OmniauthCallbacksController.build_registration_hash(@omniauth_hash)
logger.debug(registration_hash.to_yaml)
# Set the @user to nil
@user = nil
# Find if an authentication token for this provider and user id already exists
authentication = Authentication.find_by_provider_and_uid(@omniauth_hash['provider'], @omniauth_hash['uid'])
if authentication # We found an authentication
if user_signed_in? && (authentication.user.id != current_user.id)
flash[:error] = I18n.t "controllers.omniauth_callbacks.process_callback.error.account_already_taken",
:provider => registration_hash[:provider].capitalize,
:account => registration_hash[:email]
redirect_to edit_user_account_path(current_user)
return
end
else
# We could not find the authentication than create one
authentication = Authentication.new(:provider => @omniauth_hash['provider'], :uid => @omniauth_hash['uid'])
if user_signed_in?
authentication.user = current_user
else
registration_hash[:skip_confirmation] = true
authentication.user = User.find_by_email(registration_hash[:email]) || User.create_user(registration_hash)
end
end
@user = authentication.user
# save the authentication
authentication.token = @omniauth_hash
authentication.provider_name = registration_hash[:provider]
authentication.provider_username = registration_hash[:email]
if !authentication.save
logger.error(authentication.errors)
end
# If a user is signed in then he is trying to link a new account
if user_signed_in?
if authentication.persisted? # This was a linking operation so send back the user to the account edit page
flash[:success] = I18n.t "controllers.omniauth_callbacks.process_callback.success.link_account",
:provider => registration_hash[:provider].capitalize,
:account => registration_hash[:email]
else
flash[:error] = I18n.t "controllers.omniauth_callbacks.process_callback.error.link_account",
:provider => registration_hash[:provider].capitalize,
:account => registration_hash[:email],
:errors =>authentication.errors
end
redirect_to edit_user_account_path(current_user)
else
# This was a sign in operation so sign in the user and redirect it to his home page
if @user.persisted? && authentication.persisted?
flash[:success] = I18n.t "controllers.omniauth_callbacks.process_callback.success.sign_in",
:provider => registration_hash[:provider].capitalize,
:account => registration_hash[:email]
sign_in_and_redirect(:user,@user)
else
session['registration_hash'] = registration_hash
flash[:error] = I18n.t "controllers.omniauth_callbacks.process_callback.error.sign_in",
:provider => registration_hash[:provider].capitalize,
:account => registration_hash[:email]
redirect_to new_registration_users_url
end
end
end
def facebook
process_callback
end
def gmail
process_callback
end
Ahora se dará cuenta de que yo llamo un User.create_user (registration_hash) Esta implementación del método dependerá de cómo su aplicación crear un usuario, pero al mínimo el método tiene que crear un usuario y asignarle una contraseña aleatoria:
def self.create_user(registration_hash)
logger.info "Creating new user with registration hash: #{registration_hash.to_yaml}"
unless registration_hash or resigration_hash.empty?
return nil
end
user = User.new
user.email = registration_hash[:email]
if registration_hash[:password]
user.password = registration_hash[:password]
else
user.password = Devise.friendly_token[0,20]
end
user.password_confirmation = user.password
# custom app code here...
if registration_hash[:skip_confirmation] == true
user.confirm!
end
user
end
Nota: Mi entrada apoyo aplicación con otro servicio, así que tengo implementó una tabla que contiene tokens de autenticación.
Espero que esto pueda comenzar.
La opción 'diálogo' parece estar en desuso. Creo que 'popup' es el equivalente en estos días. – drewww
Ahora, Popup también se depreció @drewww –