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我正在尝试做一个有用户有用户的系统。到目前为止没有问题。我创建了两个角色，:employee 和:boss，一个老板可以有多个员工，一个员工必须有一个老板。

我在rails应用程序上使用devise、cancan、mongoid，问题是设置ability.rb文件，我认为没问题，但是当我尝试在rspec上测试它时，它失败了。

能力.rb

class Ability
  include CanCan::Ability

  def initialize(user)
    user ||= User.new # guest user (not log in)

    alias_action :read, :create, :update, :destroy, :to => :crud

    if user.role? == :boss
      can :crud, User do |people|
        user.users.include?( people )
      end
    end
  end
end

和规范文件：

require 'cancan'
require 'cancan/matchers'
require_relative '../../app/models/ability.rb'
require 'spec_helper'

describe Ability do
  let(:user) { FactoryGirl.create(:user) }

  describe "role user system" do
    context "when there are a boss" do

      before(:each)do
        @user = user
        @ability = Ability.new(@user)
        @emplo = FactoryGirl.create(:user, :role => :employee, :user => @user)
      end

      it "allows to crud employees" do
        @ability.should be_able_to(:crud, @emplo)
      end

      it "denies a non boss user to manage employees" do
        ability1 = Ability.new(FactoryGirl.create(:user, :role => :employee))
        ability1.should_not be_able_to(:manage, @emplo)
      end
    end
  end
end

工厂默认创建用户为老板。我运行测试并获得：

Ability
  role user system
    when there are a boss
      allows to crud employees (FAILED - 1)
      denies a non boss user to manage employees

Failures:

  1) Ability role user system when there are a boss allows to crud employees
     Failure/Error: @ability.should be_able_to(:crud, @emplo)
       expected to be able to :crud #<User _id: 518b5a860009d6307f000002, _type: nil, 
       email: "user-2@example.org", encrypted_password: "$2a$04$OJeSUDPFf223r79jJP6odeBcuRoBJa1y0u3omOnAsE7SUyPwtgdmW", 
       reset_password_token: nil,  reset_password_sent_at: nil, remember_created_at: nil, 
       sign_in_count: 0, current_sign_in_at: nil, last_sign_in_at: nil, current_sign_in_ip: nil, 
       last_sign_in_ip: nil, confirmation_token: nil, confirmed_at: 2013-05-09 08:12:54 UTC, 
       confirmation_sent_at: nil, unconfirmed_email: nil, address: "C\\ Romeo love Julieta street, 9, 5º A", 
       name: "fooname", surname: "foosurname", phone: "+34957957957", role: :employee, user_id: "518b5a860009d6307f000001">

我做错了什么，我在互联网上搜索，但我没有找到答案。谢谢。

PD：我已经重构了ability.rb 文件

if user.role? == :boss 
  can :crud, User do |people| 
    user.users.include?( people ) 
  end 
end

为了

if user.role? == :boss 
  can :crud, User, User.where(:user_id => user.id) 
end

仍然有同样的问题，但现在更清晰了

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1 回答 1

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我终于解决了这个问题，我为其他像我这样的新手提出了解决方案：

if user.role? == :boss 
  can :crud, User, User.where(:user_id => user.id)
end

这必须改变：

if user.role? == :boss 
  can :crud, User, :user_id => user.id
end
于 2013-05-23T10:30:59.340 回答