我试图让 Cancan 在我的 Rails 应用程序上与 Devise 一起工作。我尝试按照此处的说明进行设置:
当我收到以下错误时,我被卡住了:
用户中的 ArgumentError::RegistrationsController#new 错误的参数数量(2 比 1)
app/models/ability.rb:7:in initialize'
app/controllers/users/registrations_controller.rb:6:in
check_permissions'
我的ability.rb 内容如下:
class Ability
include CanCan::Ability
def initialize(user)
user ||= User.new # guest user
if user.role? :super_admin
can :manage, :all
elsif user.role? :admin
can :manage, :all
elsif user.role? :user
can :read, :all
# manage products, assets he owns
can :manage, Product do |product|
product.try(:owner) == user
end
can :manage, Asset do |asset|
asset.assetable.try(:owner) == user
end
end
end
end
我的注册控制器显示:
class Users::RegistrationsController < Devise::RegistrationsController
before_filter :check_permissions, :only => [:new, :create, :cancel]
skip_before_filter :require_no_authentication
def check_permissions
authorize! :create, resource
end
end
这只发生在注册页面上。应用程序中的所有其他页面都运行良好。