重定向禁止/坏uri(脸谱)回形针图像

Question

我正在尝试将用户的facebook url保存到我的数据库中,但是我收到以下错误.

redirection forbidden: http://graph.facebook.com/1240771104/picture -> https://fbcdn-profile-a.akamaihd.net/hprofile-ak-prn2/t...

我已经引用了这个问题,但我认为他只是调用一个图像而不是将其保存到带有创建块的数据库中.

这是我的用户模型......

def self.find_for_facebook_oauth(auth, signed_in_resource=nil)
    user = User.where(:provider => auth.provider, :uid => auth.uid).first
    if user
      return user
    else
      registered_user = User.where(:email => auth.info.email).first
      if registered_user
        return registered_user
      else
        user = User.create( 
                            name:auth.extra.raw_info.name,
                            provider:auth.provider,
                            uid:auth.uid,
                            email:auth.info.email,
                            image:auth.info.image,
                            password:Devise.friendly_token[0,20],
                          )
      end    
    end
end

我在'def.self_for_facebook'下面添加了一个URI帮助器,因为我认为我只需要将http发送到https.所以我从另一个堆栈问题中收集到了.

private

def process_uri(uri)
  require 'open-uri'
  require 'open_uri_redirections'
  open(uri, :allow_redirections => :safe) do |r|
  r.base_uri.to_s
  end
end

我需要添加吗？

if auth.info.image.present?
  image_url = process_uri(auth.info.image)
  user.update_attribute(:image, URI.parse(avatar_url))
end

到创建块？ 这个:

        if auth.info.image.present?
            uri = URI.parse(auth.info.image)
            uri.scheme = 'https'
            user.update_attribute(:image, URI.parse(uri))
        end

        user = User.create( 
                            name:auth.extra.raw_info.name,
                            provider:auth.provider,
                            uid:auth.uid,
                            email:auth.info.email,
                            password:Devise.friendly_token[0,20],
                          )

      end    

抓住我......

bad URI(is not URI?): https://graph.facebook.com/1240771104/picture

但那是怎么回事.链接让我看到了!! 哇男人!我必须如此亲密.

Answer 1

在您的用户模型

#user.rb
def self.find_for_facebook_oauth(auth, signed_in_resource=nil)
    user = User.create( image:process_uri(auth.info.image))
end

private

def self.process_uri(uri)
  require 'open-uri'
  require 'open_uri_redirections'
  open(uri, :allow_redirections => :safe) do |r|
    r.base_uri.to_s
  end
end

或者,如果你不想用open uri redirections宝石然后更改process_uri方法

def self.process_uri(uri)
   avatar_url = URI.parse(uri)
   avatar_url.scheme = 'https'
   avatar_url.to_s
end