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Resourcen:
Quellcode:
[bash]
rails g controller sessions
rails g model user provider:string uid:string name:string
rake db:migrate
[/bash]
[ruby]
# Gemfile
gem ‚omniauth‘
# config/initializers/omniauth.rb
Rails.application.config.middleware.use OmniAuth::Builder do
provider :twitter, ‚CONSUMER_KEY‘, ‚CONSUMER_SECRET‘
end
# routes.rb
match "/auth/:provider/callback" => "sessions#create"
match "/signout" => "sessions#destroy", :as => :signout
# sessions_controller.rb
def create
auth = request.env["omniauth.auth"]
user = User.find_by_provider_and_uid(auth["provider"], auth["uid"]) || User.create_with_omniauth(auth)
session[:user_id] = user.id
redirect_to root_url, :notice => "Signed in!"
end
def destroy
session[:user_id] = nil
redirect_to root_url, :notice => "Signed out!"
end
# models/user.rb
def self.create_with_omniauth(auth)
create! do |user|
user.provider = auth["provider"]
user.uid = auth["uid"]
user.name = auth["user_info"]["name"]
end
end
# application_controller.rb
helper_method :current_user
private
def current_user
@current_user ||= User.find(session[:user_id]) if session[:user_id]
end
[/ruby]
[html]
<% if current_user %>
Welcome <%= current_user.name %>!
<%= link_to "Sign Out", signout_path %>
<% else %>
<%= link_to "Sign in with Twitter", "/auth/twitter" %>
<% end %>
[/html]