Ruby on rails 3 Rails 3-警告：Can'；t大规模分配受保护的属性：用户\u ID

我在课程和用户之间有着千丝万缕的联系

class Course < ActiveRecord::Base
  belongs_to :user

  has_many :enrollments, :dependent => :delete_all
  has_many :users, :through => :enrollments

  attr_accessible :description, :duration, :name, :prerequisites, :short_name, :start_date, :user_id

  accepts_nested_attributes_for :users, :allow_destroy => true
  attr_accessible :users_attributes

以@c为课程

任何帮助都将不胜感激，

---

谢谢。

这是

用户id

，而不是

用户id

---

你需要将

用户ID

添加到你的

attr\u accessible

哦，天哪，我真不敢相信我是多么瞎！非常感谢。

class User < ActiveRecord::Base

has_many :subjects, :class_name => "Course"  # to get this call user.subjects
has_many :enrollments, :dependent => :delete_all
has_many :courses, :through => :enrollments

class Enrollment < ActiveRecord::Base

belongs_to :course
belongs_to :user

attr_accessible :course_id, :user_id

end

@c.update_attributes({:user_ids => [7,8]})