如何在factory_girl中建立/创建多对多关联? [英] How can I build/create a many-to-many association in factory_girl?
问题描述
我有一个Person
模型,该模型与Email
模型具有多对多关系,我想创建一个工厂,让我为该人生成名字和姓氏(此操作已经完成)并创建一个基于该人姓名的电子邮件地址.这是我用来创建person
名称的内容:
I have a Person
model that has a many-to-many relationship with an Email
model and I want to create a factory that lets me generate a first and last name for the person (this is already done) and create an email address that is based off of that person's name. Here is what I have for create a person
's name:
Factory.sequence :first_name do |n|
first_name = %w[FirstName1 FirstName2] # ... etc (I'm using a real subset of first names)
first_name[(rand * first_name.length)]
end
Factory.sequence :last_name do |n|
last_name = %w[LastName1 LastName2] # ... etc (I'm using a real subset of last names)
last_name[(rand * last_name.length)]
end
Factory.define :person do |p|
#p.id ???
p.first_name { Factory.next(:first_name) }
p.last_name { Factory.next(:last_name) }
#ok here is where I'm stuck
#p.email_addresses {|p| Factory(:email_address_person_link) }
end
Factory.define :email_address_person_link do |eapl|
# how can I link this with :person and :email_address ?
# eapl.person_id ???
# eapl.email_address_id ???
end
Factory.define :email_address do |e|
#how can I pass p.first_name and p.last_name into here?
#e.id ???
e.email first_name + "." + last_name + "@test.com"
end
推荐答案
好,我想我明白您现在要问的问题.像这样的事情应该起作用(未经测试,但是我在另一个项目中做了类似的事情):
Ok, I think I understand what you're asking now. Something like this should work (untested, but I've done something similar in another project):
Factory.define :person do |f|
f.first_name 'John'
f.last_name 'Doe'
end
Factory.define :email do |f|
end
# This is optional for isolating association testing; if you want this
# everywhere, add the +after_build+ block to the :person factory definition
Factory.define :person_with_email, :parent => :person do |f|
f.after_build do |p|
p.emails << Factory(:email, :email => "#{p.first_name}.#{p.last_name}@gmail.com")
# OR
# Factory(:email, :person => p, :email => "#{p.first_name}.#{p.last_name}@gmail.com")
end
end
如前所述,使用第三个单独的工厂是可选的.就我而言,我并不总是希望为每个测试都生成关联,因此我创建了一个单独的工厂,仅在一些特定的测试中使用过.
As noted, using a third, separate factory is optional. In my case I didn't always want to generate the association for every test, so I made a separate factory that I only used in a few specific tests.
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