Facebook访问令牌出错 [英] Error with facebook access token

问题描述

我的问题是在facebook回调网址。我在Rails 3.0上使用fbgraph gem。

我要求我的标签应用程序有扩展权限。所以在回调我等待代码参数和access_token。

我从fbgraph官方GIT存储库中提取此代码。

  def authorize 
 begin 
 @ auth.client.authorization_code = params [：code] 
 #In access_token行应该返回我access__token但是会抛出一个错误消息（见下文）
 access_token = @ auth.client.access_token！ ＃=> Rack :: OAuth2 :: AccessToken 
 @facebook_user = FbGraph :: User.me（access_token）.fetch＃=> FbGraph :: User 
 #MORE CODE WITHOUT IMPORTANCE 
 redirect_to：controller => dashboard，：action => index
 rescue Exception => e 
 logger.info（e.message）
 end 
 end 
  

抛出此错误消息：

Rack :: OAuth :: Client :: Error＃=> @status = 400，Message => Missing redirect uri

请快速帮助我。对不起，谢谢提前

解决方案

我正在使用类似的fb_graph宝石。为了获取access_token，您还需要提供回调URI - 这是fb_graph版本：

  client.redirect_uri = http：//your.callback.uri
 client.authorization_code = params [：code] 
 access_token = client.access_token！ 
  

更新：

查看fbgraph宝贝文档我想你需要替换这两行：

  @ auth.client.authorization_code = params [：code] 
 access_token = @ auth.client.access_token！ 
  

这样：

  access_token = @ auth.client.authorization.process_callback（params [：code]，：redirect_uri => callback_url）
  

$ b说实话，我看着使用fbgraph gem，但是文档太糟糕了，所以我转而使用了fb_graph，而这个文件类似，实际上在文档中有一些有用的例子。

My problem is on facebook callback url. I am using fbgraph gem on Rails 3.0.

I ask for extended permissions on my tab application. So in the callback I wait code parameter and access_token.

I extract this code from fbgraph official GIT repository.

    def authorize
        begin
          @auth.client.authorization_code = params[:code]
#In access_token line should return me access__token but throw a error message (see below)
          access_token = @auth.client.access_token! # => Rack::OAuth2::AccessToken
          @facebook_user = FbGraph::User.me(access_token).fetch # => FbGraph::User
    #MORE CODE WITHOUT IMPORTANCE
          redirect_to :controller => "dashboard", :action => "index"
        rescue Exception => e
           logger.info(e.message)
        end
      end

Throw this error message:

Rack::OAuth::Client::Error # => @status = 400, Message => Missing redirect uri

Please I need help quickly. Excuse me and thanks in advance

解决方案

I'm using the fb_graph gem which is similar. In order to get the access_token you also need to supply the callback URI - this is the fb_graph version:

client.redirect_uri = "http://your.callback.uri"
client.authorization_code = params[:code]
access_token = client.access_token!

Update:

Looking at the fbgraph gem documentation I think you need to replace these two lines:

@auth.client.authorization_code = params[:code]
access_token = @auth.client.access_token!

With this:

access_token = @auth.client.authorization.process_callback(params[:code], :redirect_uri => callback_url)

To be honest I looked at using the fbgraph gem but the documentation was so bad that I switched to fb_graph instead which is similar and actually has some useful examples in the documentation.

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