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copied!<p>Hey, maybe I can help on this one, just had this problem not very long time ago...</p> <p>Facebook connect is outdated. All the cool kids are now using Facebook Graph with OAuth. Facebook team have even closed the documentation for Facebook Connect.</p> <p>Anyway, that goes for Authlogic Facebook connect, it simply does not work anymore.</p> <p>In the end, I kept using Authlogic for normal login and account management, but for Facebook connect I wrote my own code.</p> <p>Chances are you may have used facebooker gem. Uninstall that gem, but keep the config/facebooker.yml file.</p> <p>Try this:</p> <ol> <li><p>Keep using config/facebooker.yml by adding this code inside config/initializers/load_config.rb (you need to create this file)</p> <p><code>config = YAML.load_file("#{Rails.root}/config/facebooker.yml") || {}</code></p> <p><code>facebook_config = config['common'] || {}</code></p> <p><code>facebook_config.update(config[Rails.env] || {})</code></p> <p><code>FB_CONFIG = facebook_config.symbolize_keys</code></p></li> <li><p>Add this code inside your user_controller.rb:</p></li> </ol> <pre> def facebook_oauth_callback if not params[:code].nil? callback = url_for(:host => APP_CONFIG[:host], :controller => 'gallery/user', :action => 'facebook_oauth_callback') url = URI.parse("https://graph.facebook.com/oauth/access_token?client_id=#{FB_CONFIG[:application_id]}&redirect_uri=#{callback}&client_secret=#{FB_CONFIG[:secret_key]}&code=#{CGI::escape(params[:code])}") http = Net::HTTP.new(url.host, url.port) http.use_ssl = (url.scheme == 'https') tmp_url = url.path + "?" + url.query request = Net::HTTP::Get.new(tmp_url) response = http.request(request) data = response.body access_token = data.split("=")[1] if access_token.blank? flash[:notice] = 'An error occurred while connecting through Facebook, please try again later.' else url = URI.parse("https://graph.facebook.com/me?access_token=#{CGI::escape(access_token)}") http = Net::HTTP.new(url.host, url.port) http.use_ssl = (url.scheme == 'https') tmp_url = url.path + "?" + url.query request = Net::HTTP::Get.new(tmp_url) response = http.request(request) user_data = response.body user_data_obj = JSON.parse(user_data) @user = User.new_or_find_by_facebook_oauth_access_token(access_token, {:user_data => user_data_obj}) if @user.new_record? session[:user] = @user session[:external_app] = "Facebook" redirect_to(:action => 'new_details') else user_session = UserSession.create(@user) flash[:notice] = "Successfully logged in." redirect_back_or_default root_url end end end end def create_facebook redirect_to("https://graph.facebook.com/oauth/authorize?client_id=#{FB_CONFIG[:application_id]}&redirect_uri=" + url_for(:host => APP_CONFIG[:host], :controller => 'gallery/user', :action => 'facebook_oauth_callback') + "&scope=email,offline_access") end </pre> <ol> <li>Add the find method inside your User model (app/models/user.rb):</li> </ol> <pre> def self.new_or_find_by_facebook_oauth_access_token(access_token, options = {}) user = User.find_by_facebook_oauth_access_token(access_token) if user.blank? #code to create new user here end user end </pre> <ol> <li><p>Add link to action create_facebook in the view, something like</p> <p><code><%= link_to image_tag('gallery/button-facebook.png', :title => "register with Facebook", :alt => "register with Facebook"), {:action => 'create_facebook'}, {:target => '_parent'} %></code></p></li> </ol> <p><strong>Explanation</strong></p> <ol> <li>In the first step you created a file to get config data from facebooker.yml</li> <li>In second step, you basically created two functions, one for sending user to facebook site (create_facebook) and another to capture the callback data (facebook_oauth_callback) the idea was from this page: <a href="http://www.wisejive.com/2010/05/facebook-oauth-on-rails.html" rel="nofollow">http://www.wisejive.com/2010/05/facebook-oauth-on-rails.html</a></li> <li>In third step, you just added a method inside User model to find, or create new if not found, a user based on the information returned from facebook.</li> </ol> <p>The code only works on my project, do not just copy-paste it but learn it line-by-line. Over time I realised it is better to use simple code you can understand rather than using other's complicated plugin you cannot fix when things go awry...</p>

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