如何在Factory Girl中创建具有has_many:through关系的关联? [英] How do I create an association with a has_many :through relationship in Factory Girl?

问题描述

在我的模型中，我具有以下设置:

In my models I have the following setup:

class User < ActiveRecord::Base
  has_many :assignments
  has_many :roles, :through => :assignments
end


class Role < ActiveRecord::Base
  has_many :assignments
  has_many :users,  :through => :assignments
end

class Assignment < ActiveRecord::Base
  belongs_to :user
  belongs_to :role

  attr_accessible :role_id, :user_id
end

在我的factory.rb文件中，我有:

In my factory.rb file I have:

FactoryGirl.define do
  factory :user do
    sequence(:username) { |n| "user#{n}" }
    email { "#{username}@example.com" }
    password 'secret'
    password_confirmation 'secret'

    factory :admin  do
      ...
    end
  end

  factory :role do
    name 'Normal'
    value 'normal'
  end

  factory :assignment do
    ...
  end
end

我正在努力找出如何在用户"块内的管理员"工厂中添加:name =>"admin"，:value =>"admin"的角色，以便我可以调用

I'm struggling to figure out how I would add a role with, :name => "admin", :value => "admin", to the "admin" factory inside the "user" block so I can call

create(:admin)

在我的测试中，并且有一个具有管理员角色的用户.

in my tests and have a user with the admin role.

谢谢您的光临.

推荐答案

对于这样的工厂，您需要使用factory girl的回调. 试试这个:

For such a factory you need to use callbacks of factory girl. Try this:

FactoryGirl.define do
  factory :user do
    ...
  end

  factory :admin, :parent => :user do 
    after_create {|u| Factory(:assignment, :role => Factory(:role, :name => 'admin', :value => 'admin'), :user => u)}
  end

  factory :role do
    ...
  end

  factory :assignment do
    user {|a| a.association(:user)}
    role {|a| a.association(:role)}
  end
end

这篇关于如何在Factory Girl中创建具有has_many:through关系的关联?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！