Rails 5模型对象不显示所有属性 [英] Rails 5 model objects not showing all attributes

问题描述

我正在使用Rails 5 API与设计。我有一个用户模型。模式看起来像这样。

  create_tableusers，force：：cascade do | t | 
 t.stringemail，默认值为，null：false 
 t.stringencrypted_pa​​ssword，默认值为，null：false 
 t.stringreset_password_token
 t.datetimereset_password_sent_at
 t.datetimeremember_created_at
 t.integersign_in_count，默认值：0，null：false 
 t.datetimecurrent_sign_in_at
 t.datetimelast_sign_in_at
 t.inetcurrent_sign_in_ip
 t.inetlast_sign_in_ip
 t.datetimecreated_at，null：false 
 t.datetimeupdated_at ，null：false 
 t.index [email]，name：index_users_on_email，unique：true，using：：btree 
 t.index [reset_password_token]，name：index_users_on_reset_password_token唯一：true，使用：：btree 
 end 
  

但是我遇到的问题是Rails只显示：id，：email，：created_at，update updated = attri butes作为模型的一部分。例如，在rails控制台中

  User.new 
 => ＃< User id：nil，email：，created_at：nil，updated_at：nil> 
 
 User.first 
用户加载（0.5ms）SELECTusers。* FROMusersORDER BYusers。idASC LIMIT $ 1 [[LIMIT，1 ]] 
 => ＃< User id：2，email：[e-mail]，created_at：2016-09-22 03:58:04，updated_at：2016-09-22 04:54:41> 
  

但这些属性存在于数据库中。 使用rails 5设计。但是没有答案。请帮助。

解决方案

Devise限制属性，如 encrypted_pa​​ssword 以使关键信息不会在API调用中暴露出来。所以要重写这个，你需要覆盖 serializable_hash 方法。

  def serializable_hash（options = nil）
 super（options）.merge（encrypted_pa​​ssword：encrypted_pa​​ssword）
 end 
  

这不是Rails 5的特定功能，而是一个Devise功能来保护您的属性。

希望有帮助！

I am using Rails 5 API with devise. I have a User model. Schema looks like this.

create_table "users", force: :cascade do |t|
    t.string   "email",                  default: "", null: false
    t.string   "encrypted_password",     default: "", null: false
    t.string   "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",          default: 0,  null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.inet     "current_sign_in_ip"
    t.inet     "last_sign_in_ip"
    t.datetime "created_at",                          null: false
    t.datetime "updated_at",                          null: false
    t.index ["email"], name: "index_users_on_email", unique: true, using: :btree
    t.index ["reset_password_token"], name: "index_users_on_reset_password_token",    unique: true, using: :btree
  end

But the issue I am having is Rails only showing :id , :email , :created_at , :updated_at attributes as part of model. For example, in rails console

 User.new
 => #<User id: nil, email: "", created_at: nil, updated_at: nil> 

 User.first
  User Load (0.5ms)  SELECT  "users".* FROM "users" ORDER BY "users"."id" ASC LIMIT $1  [["LIMIT", 1]]
 => #<User id: 2, email: "[e-mail]", created_at: "2016-09-22 03:58:04", updated_at: "2016-09-22 04:54:41"> 

But these attributes exist in database.This problem is mentioned earlier . Devise with rails 5 . But no answers there .Please help.

解决方案

Devise restricts attributes like encrypted_password so that the critical information doesn't get exposed in API calls. So to override this, you need to override serializable_hash method.

def serializable_hash(options = nil) 
  super(options).merge(encrypted_password: encrypted_password) 
end

This is not a Rails 5 specific feature but a Devise feature to protect your attributes.

Hope that helps!

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