强参数 - 设计3.0.0和Rails 4.“未允许的参数：名称”(Strong parameters - Devise 3.0.0 and Rails 4. “Unpermitted parameters: name”)

 我目前正在使用Rails 4和Devise 3.0.0。 我试图在注册表单中添加“名称”的自定义字段并编辑注册表单。 每当我提交表单时，都会出现以下错误： 
 
Unpermitted parameters: name

WARNING: Can't mass-assign protected attributes for User: email, password, password_confirmation.
 
 我知道这与Rails 4处理参数的方式有关，但我不明白我现在应该怎么做。 我已经四处搜索并看到我应该在涉及“params”的User模型中添加一些行。 
 
 我的用户模型目前看起来像这样： 
 
class User < ActiveRecord::Base

  devise :database_authenticatable, :registerable, #:recoverable,
          :rememberable, :trackable, :validatable

  attr_accessible :name, :password, :password_confirmation, :remember_me, :email
end
 
 根据Rails 4中如何使用attr_accessible？ ，我应该将以下代码添加到“控制器”。 
 
class PeopleController < ApplicationController
  def create
    Person.create(person_params)
  end

  private

  def person_params
    params.require(:person).permit(:name, :age)
  end
end
 
 什么控制器？ 这是文字代码吗？ 由于我正在处理User，我是否必须使用User.create（user_params）？ 而不是Person.create（person_params）？ 

I am currently using Rails 4 and Devise 3.0.0. I have tried to add a custom field of "Name" to the sign up form and edit registration form. Whenever I submit the form, the following errors arise:
 
Unpermitted parameters: name

WARNING: Can't mass-assign protected attributes for User: email, password, password_confirmation.
 
I understand that this has something to do with the way Rails 4 handles parameters, but I do not understand what I am supposed to do about it right now. I have searched around and have seen that I am supposed to add some lines to a User model involving "params."
 
My user model currently looks like this:
 
class User < ActiveRecord::Base

  devise :database_authenticatable, :registerable, #:recoverable,
          :rememberable, :trackable, :validatable

  attr_accessible :name, :password, :password_confirmation, :remember_me, :email
end
 
According to How is attr_accessible used in Rails 4?, I am supposed to add the following code to "The controller." 
 
class PeopleController < ApplicationController
  def create
    Person.create(person_params)
  end

  private

  def person_params
    params.require(:person).permit(:name, :age)
  end
end
 
What controller? And is this literal code? Since I am dealing with User, do I have to use User.create(user_params)? instead of Person.create(person_params)?

原文：https://stackoverflow.com/questions/19922874