if @ user.persisted？与Facebook omniauth |设计

Question

我Omniauth_callbacks_controller.rb

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController 
    def facebook 
     # You need to implement the method below in your model (e.g. app/models/user.rb) 
     @user ||= 
      User.find_for_facebook_oauth(request.env["omniauth.auth"], current_user) 

     if @user.persisted? 
      # This will throw if @user is not activated 
      sign_in_and_redirect @user, event: :authentication 
      if is_navigational_format? 
       set_flash_message(:notice, :success, kind: "Facebook") 
      end 
     else 
      session["devise.facebook_data"] = request.env["omniauth.auth"] 
      redirect_to new_user_registration_url 
     end 
    end 
end 

没有问题，没有日志。但是当有人试图通过Facebook进行连接时，它只会将其引导至默认的注册表单。

http://localhost:3000/sign_up#_=_ 

我的用户模型

class User < ActiveRecord::Base 

    devise :database_authenticatable, :registerable, #:recoverable 
     :rememberable, :trackable, :validatable, :omniauthable, 
       :omniauth_providers => [:facebook] 


    # Facebook Settings 
    def self.find_for_facebook_oauth(auth, signed_in_resource = nil) 
     user = User.where(provider: auth.provider, uid: auth.uid).first 
     if user.present? 
      user 
     else 
      user = User.create(first_name:auth.extra.raw_info.first_name, 
               last_name:auth.extra.raw_info.last_name, 
               facebook_link:auth.extra.raw_info.link, 
               provider:auth.provider, 
               uid:auth.uid, 
               email:auth.info.email, 
               password:Devise.friendly_token[0,20]) 
     end 
    end 



    validates :first_name, :presence => true 
    validates :email, :presence => true 
    validates :user_name, :presence => true, :uniqueness => true 

    has_many :clips 
    has_one :show, dependent: :destroy 

    # Profile Page Avatar 
    has_attached_file :avatar, styles: { avatar: "64x64#"}, 
             :default_url => "http://placehold.it/150x150&text=Missing" 

    validates_attachment :avatar, 
              content_type: { content_type: ['image/jpeg', 'image/jpg', 'image/png', 'image/gif'] }, 
              size: { less_than: 5.megabytes } 

    # Profile Page Cover 
    has_attached_file :profile_cover, styles: { cover: "870x150#"}, 
             :default_url => "http://placehold.it/150x150&text=Missing" 

    validates_attachment :profile_cover, 
              content_type: { content_type: ['image/jpeg', 'image/jpg', 'image/png', 'image/gif'] }, 
              size: { less_than: 5.megabytes } 


    # For Using the username instead of ID in the Link 
    def to_param 
     user_name 
    end 

end 

Answer 1

我不是100％肯定，因为有一些涉及其他信息的原因。

我建议：

1. 改变这一行

   @user ||= User.find_for_facebook_oauth ... 
   

   要

   @user = User.find_for_facebook_oauth 
   

   这是为了消除其他可能的影响，并有小点缓存@user因为这一行动不会经常发生。

2. 确保您已添加并迁移了provider,uid,name列。

3. 原因应该是@user不会被保留，因此创建用户时可能会出现问题。您可以将create更改为create!以查看抛出的错误。

   如果仍然不确定，请调试此用户方法。

更新

好，知道了原因。你有一个验证：

validates :user_name, :presence => true, :uniqueness => true 

但在Facebook的属性，有没有这样的属性:user_name，所以节约会失败。

修复只是使用一种方法将此属性添加到Facebook散列，或不验证此属性。