创建与Facebook大量交互的Rails应用程序。我希望用户能够查看其他用户的个人资料,并查看从Facebook上提取的用户信息。
我正在使用omniauth-facebook和考拉宝石。我跟随Ryan Bates在Facebook身份验证和Facebook Graph API上的Railscasts来到我所在的位置。
我不想在我的数据库中存储用户的Facebook信息,但这似乎是唯一的方法,因为否则,当我尝试查看可能已注销的其他用户的个人资料页面时,我得到:“Koala :: Facebook :: AuthenticationError in Profiles #show”
type: OAuthException, code: 190, error_subcode: 467, message: Error validating access token: The session is invalid because the user logged out. [HTTP 400]
。
有没有办法从Facebook引入这些数据,即使该用户已退出?
这是必要的代码:
user.rb:
class User < ActiveRecord::Base
def self.from_omniauth(auth)
where(auth.slice(:provider, :uid)).first_or_initialize.tap do |user|
user.provider = auth.provider
user.uid = auth.uid
user.name = auth.info.name
user.image = auth.info.image
user.oauth_token = auth.credentials.token
user.oauth_expires_at = Time.at(auth.credentials.expires_at)
user.save!
end
end
def facebook
@facebook ||= Koala::Facebook::API.new(oauth_token)
block_given? ? yield(@facebook) : @facebook
rescue Koala::Facebook::APIError
logger.info e.to_s
nil
end
end
sessions_controller.rb
class SessionsController < ApplicationController
def create
user = User.from_omniauth(env["omniauth.auth"])
session[:user_id] = user.id
redirect_to feed_path
end
def destroy
session[:user_id] = nil
redirect_to root_url
end
end
application_controller.rb
class ApplicationController < ActionController::Base
protect_from_forgery
private
def current_user
@current_user ||= User.find(session[:user_id]) if session[:user_id]
rescue ActiveRecord::RecordNotFound
end
helper_method :current_user
end
profiles_controller.rb
class ProfilesController < ApplicationController
def show
@user = User.find(params[:id])
end
end
profiles_helper.rb:
module ProfilesHelper
def facebook_profile_info
@user.facebook.get_object("#{@user.uid}",fields:'gender, locale, bio, birthday,
picture, relationship_status')
end
end
此外,如果您有关于更好地完成这些任务的建议而不是我前往的轨迹,我欢迎您的建议。