您需要在
用户模型中
添加它(app / models / user.rb)
class User < ActiveRecord::Base
has_and_belongs_to_many :roles
devise :database_authenticatable,:confirmable,:recoverable,:rememberable,:trackable,:validatable
def role?(role)
return !!self.roles.find_by_name(role.to_s.camelize)
end
end
