0
我想要做的是當一個用戶被創建時,它會自動給他們一個角色。當我的任務與has_many中的用戶模型有關時,如何自動爲用戶分配角色? Rails 3
問題是,角色通過關聯通過分配表和has_many與用戶相關聯。
的代碼如下:
User model
# == Schema Information
# Schema version: 20110214082231
#
# Table name: users
#
# id :integer not null, primary key
# email :string(255)
# encrypted_password :string(128)
# password_salt :string(255)
# reset_password_token :string(255)
# remember_token :string(255)
# remember_created_at :datetime
# sign_in_count :integer
# current_sign_in_at :datetime
# last_sign_in_at :datetime
# current_sign_in_ip :string(255)
# last_sign_in_ip :string(255)
# username :string(255)
# f_name :string(255)
# l_name :string(255)
# created_at :datetime
# updated_at :datetime
# invitation_token :string(60)
# invitation_sent_at :datetime
# plan_id :integer
# current_state :string(255)
# confirmation_token :string(255)
# confirmed_at :datetime
# confirmation_sent_at :datetime
#
class User < ActiveRecord::Base
before_create :assign
has_many :assignments
has_many :roles, :through => :assignments
def role_symbols
roles.map do |role|
role.name.underscore.to_sym
end
end
def assign
@assignment.build_role(:user_id => self.id, :role_id => '3')
end
end
Assignments model
# Table name: assignments
#
# id :integer not null, primary key
# user_id :integer
# role_id :integer
# created_at :datetime
# updated_at :datetime
#
class Assignment < ActiveRecord::Base
belongs_to :role
belongs_to :user
end
Role model
# == Schema Information
# Schema version: 20101117094659
#
# Table name: roles
#
# id :integer not null, primary key
# name :string(255)
# created_at :datetime
# updated_at :datetime
#
class Role < ActiveRecord::Base
has_many :assignments
has_many :users, :through => :assignments
end