我无法使用factory_girl
,因为我正在测试太阳黑子并且需要真正的数据库。
修改:不。它可以与太阳黑子一起使用。我错了。
如何在灯具中建立has_many:through(a.k.a多对多)关联?
我谷歌并获得invalid solution
修改:
最后我使用factory_girl。我google-copy-paste一个片段:
factory :tagging do
question { |a| a.association(:question) }
tag { |a| a.association(:tag) }
end
(通过标记问题has_many标签,反之亦然)
效果很好。但它是什么? factory_girl的自述文件并不意味着这种语法。 有人能解释一下吗
答案 0 :(得分:1)
如果它是一个经典的has_and_belongs_to_many关联,在关联模型中没有其他信息,我认为这些约定允许你像这样编写你的灯具:
#users.yml
john:
first_name: John
last_name: Doe
hobbies: [swim, play_tennis]
#hobbies.yml
swim:
name: Swim
play_tennis:
name: Play Tennis
但我不完全确定!
答案 1 :(得分:1)
您可以找到factory_girl的官方文档,该文档非常完整,here。
Here是一个不错的(较短的)博客文章,解释了factory_girl 2(将它与工厂女孩1进行比较)。
更新:
稍微解释一下代码:
factory :tagging do
association :tag
end
将查找名为:tag
的工厂并构建该对象,然后将其链接到对象中tag
之间的关联belongs_to
(例如:tagging
) }}
请注意:这是默认工厂。如果您希望taggings
分享tag
,则需要执行类似
@tag = Factory(:tag)
@tagging_1 = Factory(:tagging, :tag => @tag)
@tagging_2 = Factory(:tagging, :tag => @tag)
希望这有帮助。
答案 2 :(得分:0)
我通过哈希has_many :through
merge
进行测试时使用了灯具
# posts.yml
one:
title: "Railscasts"
url: "http://railscasts.com/"
description: "Ruby on Rails screencasts"
# categories.yml
one:
name: "magazine"
two:
name: "tutorial"
three:
name: "news"
four:
name: "Ruby"
# posts_controller_test.rb
def test_post_create
assert_difference 'Post.count' do
post :create, post: posts(:one).attributes
.merge(categories: [categories(:two), categories(:four)])
end
end
在添加另一个灯具文件后,尝试了这个,它没有工作
# post_categories.yml
one:
post: one
category: two
two:
post: one
category: four
def test_post_create
assert_difference 'Post.count' do
post :create, post: posts(:one)
end
end
puts posts(:one).attributes
# {"id"=>980190962, "url"=>"http://railscasts.com/", "title"=>"Railscasts", "description"=>"Ruby on Rails screencasts", "created_at"=>Thu, 14 May 2015 18:27:20 UTC +00:00, "updated_at"=>Thu, 14 May 2015 18:27:20 UTC +00:00}
puts posts(:one).attributes
.merge(categories: [categories(:two), categories(:four)])
# {"id"=>980190962, "url"=>"http://railscasts.com/", "title"=>"Railscasts", "description"=>"Ruby on Rails screencasts", "created_at"=>Thu, 14 May 2015 18:30:23 UTC +00:00, "updated_at"=>Thu, 14 May 2015 18:30:23 UTC +00:00, "category_ids"=>[980190962, 1018350795]}