如何使has_many:通过与灯具关联? [英] How to make has_many :through association with fixtures?

问题描述

我不能使用factory_girl，因为我正在测试黑子并且需要真实的数据库.

I can't use factory_girl because I'm testing sunspot and need real database.

修改:不.它可以与黑子一起使用.我错了.

Edit: nope. It can works with sunspot. I'm wrong.

如何在灯具中建立has_many:through(也称为多对多)关联?

How can I build has_many :through(a.k.a many-to-many) associations in fixtures?

我用Google搜索它，并得到了无效的解决方案

I google it and get a invalid solution

修改:

最后，我使用factory_girl.我用google复制并粘贴了一个代码段:

Finally I use factory_girl. I google-copy-paste a snippet:

factory :tagging do 
    question { |a| a.association(:question) } 
    tag { |a| a.association(:tag) } 
end

(通过标签有问题has_many标签，反之亦然)

(question has_many tags through taggings, vice versa)

效果很好.那是什么factory_girl的自述文件并不意味着该语法. 有人可以解释吗?

It works well. But what's it? The factory_girl's readme didn't meantion this syntax. Could someone explain?

推荐答案

您可以找到有关factory_girl的正式文档，该文档非常完整，

You can find the official documentation for factory_girl, which is very complete, here.

此处是一篇很好的(简短的)博客文章，解释了factory_girl 2(进行比较和工厂女工1).

Here is a nice (shorter) blogpost explaining factory_girl 2 (comparing it with factory-girl 1).

已更新:

稍微解释一下代码:

 factory :tagging do
   association :tag
 end

将寻找一个名为:tag的工厂，并将构造该对象，然后将其链接到对象:tagging内部存在的关联tag(例如，belongs_to).

will look for a factory called :tag and will construct that object, and then link that to the association tag (e.g. a belongs_to) that is there inside your object :tagging.

请注意:这是默认出厂.如果要taggings共享tag，则需要执行类似的操作

Please note: this is the default factory. If you want taggings to share a tag, you will need to do something like

@tag = Factory(:tag)
@tagging_1 = Factory(:tagging, :tag => @tag)
@tagging_2 = Factory(:tagging, :tag => @tag)

希望这会有所帮助.

这篇关于如何使has_many:通过与灯具关联?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！