ruby-on-rails – 如何让考拉和Omniauth玩得很好?

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我试图让考拉与Omniauth合作.用户模型使用Omniauth登录Facebook,并且我想使用Koala作为客户端来拉取正在使用该应用的用户的朋友的列表.我似乎没有正确保存令牌:

调节器

@friends = Array.new
 if current_user.token
   graph = Koala::Facebook::GraphAPI.new(current_user.token)
   @profile_image = graph.get_picture("me")
   @fbprofile = graph.get_object("me")
   @friends = graph.get_connections("me","friends")
end

DB架构

create_table "users",:force => true do |t|
  t.string   "provider"
  t.string   "uid"
  t.string   "name"
  t.datetime "created_at"
  t.datetime "updated_at"
  t.string   "token"
end

用户模型有

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

Koala.rb初始化器有:

module Facebook
  CONFIG = YAML.load_file(Rails.root.join("config/facebook.yml"))[Rails.env]
  APP_ID = CONFIG['app_id']
  SECRET = CONFIG['secret_key']
end

Koala::Facebook::OAuth.class_eval do
  def initialize_with_default_settings(*args)
    case args.size
      when 0,1
        raise "application id and/or secret are not specified in the config" unless Facebook::APP_ID && Facebook::SECRET
        initialize_without_default_settings(Facebook::APP_ID.to_s,Facebook::SECRET.to_s,args.first)
      when 2,3
        initialize_without_default_settings(*args) 
    end
  end 

  alias_method_chain :initialize,:default_settings 
end

会话控制器有:

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  

    session['fb_auth'] = request.env['omniauth.auth']
    session['fb_access_token'] = omniauth['credentials']['token']
    session['fb_error'] = nil

    redirect_to root_url 
  end

解决方法

像您已经知道的问题是,fb_access_token仅在当前会话中可用,不可用于Koala.

您的用户型号是否有一列存储“令牌”?如果没有,请确保您在用户模型中有该列.当您在用户模型中有该列时,您将需要在创建用户时在其中存储某些内容(在User类中为create_with_omniauth方法).在Facebook的成功授权之后,您应该发现令牌字段填充了facebook oauth令牌.如果它被填充,那么你的考拉代码应该工作.在这种情况下,不需要在会话中存储facebook凭据.

然而,如果您没有从Facebook进行离线访问(这意味着访问仅在短时间内提供,则在会话中存储facebook凭据是有道理的,在这种情况下,您不应该使用“current_user.token”但是会话[“ fb_auth_token“]而不是考拉.

希望这可以帮助!

所以如果你想离线访问(长期保存的Facebook授权),请改变你的模型代码来存储fb_auth_token如下

# User model
def self.create_with_omniauth(auth)  
  create! do |user|  
    user.provider = auth["provider"]  
    user.uid = auth["uid"]  
    user.name = auth["user_info"]["name"]  
    user.token = auth['credentials']['token']
  end  
end

# SessionsController
def create  
  auth = request.env["omniauth.auth"]  
  user = User.find_by_provider_and_uid(auth["provider"],auth["uid"]) || User.create_with_omniauth(auth)
  # Note i've also passed the omniauth object      

  session[:user_id] = user.id  
  session['fb_auth'] = auth
  session['fb_access_token'] = auth['credentials']['token']
  session['fb_error'] = nil

  redirect_to root_url 
end

如果您有短期访问权限,请更改“其他”控制器以使用会话

# The other controller
def whateverthissactionis
  @friends = Array.new
  if session["fb_access_token"].present?
    graph = Koala::Facebook::GraphAPI.new(session["fb_access_token"]) # Note that i'm using session here
    @profile_image = graph.get_picture("me")
    @fbprofile = graph.get_object("me")
    @friends = graph.get_connections("me","friends")
  end
end
原文链接:https://www.f2er.com/ruby/266924.html

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