Ruby-on-rails 未定义的方法 attr_accessible
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Undefined Method attr_accessible
提问by Cameron Jones
I am somewhat new to rails and I am trying to create a User login. I went through the tutorial found here. At the end it had me add "attr_accessible" for mass assignment. However when I did that I got the following error:
我对 rails 有点陌生，我正在尝试创建一个用户登录。我浏览了此处找到的教程。最后它让我添加“attr_accessible”进行批量分配。但是，当我这样做时，出现以下错误：
undefined method `attr_accessible' for #<Class:0x007ff70f276010>
I saw on this postthat I neeed < ActiveRecord::Base. But I do have that included. Here is the code for my User Model:
我在这篇文章中看到我需要 < ActiveRecord::Base。但我确实包括在内。这是我的用户模型的代码：
class User < ActiveRecord::Base
attr_accessor :password
EMAIL_REGEX = /\A[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\z/i
validates :username, :presence => true, :uniqueness => true, :length => { :in => 3..20 }
validates :email, :presence => true, :uniqueness => true, :format => EMAIL_REGEX
validates :password, :confirmation => true #password_confirmation attr
validates_length_of :password, :in => 6..20, :on => :create
before_save :encrypt_password
after_save :clear_password
attr_accessible :username, :email, :password, :password_confirmation
def encrypt_password
if password.present?
self.salt = BCrypt::Engine.generate_salt
self.encrypted_password= BCrypt::Engine.hash_secret(password, salt)
end
end
def clear_password
self.password = nil
end
end
Any other ideas on what could be causing this problem would be really appreciated, thanks!
关于可能导致此问题的任何其他想法将不胜感激，谢谢！
Edit: On Rails 4.1. Looks like it doesn't apply anymore. Thanks fotanus
编辑：在 Rails 4.1 上。好像已经不适用了。谢谢 fotanus
回答by Wally Ali
No mass assignment allowed for Rails 4.1
Rails 4.1 不允许批量分配
instead of having attr_accessible :username, :email, :password, :password_confirmationin your model, use strong parameters.
You'll do this in your UsersController:
而不是attr_accessible :username, :email, :password, :password_confirmation在你的模型中，使用强参数。您将在您的 UsersController 中执行此操作：
def user_params
params.require(:user).permit(:username, :email, :password, :password_confirmation)
end
then call the user_params method in your controller actions.
然后在您的控制器操作中调用 user_params 方法。
回答by Sarvesh
No mass assignment allowed for Rails 4.1
Rails 4.1 不允许批量分配
You will have to try something like this.
你将不得不尝试这样的事情。
class Person
has_many :pets
accepts_nested_attributes_for :pets
end
class PeopleController < ActionController::Base
def create
Person.create(person_params)
end
...
private
def person_params
# It's mandatory to specify the nested attributes that should be whitelisted.
# If you use `permit` with just the key that points to the nested attributes hash,
# it will return an empty hash.
params.require(:person).permit(:name, :age, pets_attributes: [ :name, :category ])
end
end
Refer
参考
回答by S? Ph?m
Make sure you are installed gem 'protected_attributes', that this gem is present in your gemfile and run bundle installterminal. Then restart your server.
确保您已安装 gem 'protected_attributes'，该 gem 存在于您的 gemfile 中并运行bundle install终端。然后重启你的服务器。
