工厂女孩的额外参数

Question

我需要传递额外的参数给工厂女孩用于回调。像这样的东西（但更复杂的真正）：

Factory.define :blog do |blog| 
    blog.name "Blah" 

    blog.after_create do |blog| 
    blog.posts += sample_posts 
    blog.save! 
    end 
end 

，然后用像这样创建：

Factory.create(:blog, :sample_posts => [post1, post2]) 

任何想法怎么办呢？

Answer 1

这是现在可能没有任何 “黑客” 由于临时属性（see comment on issue #49）

例如：

FactoryGirl.define do 
    factory :user do 
    transient do 
     bar_extension false 
    end 
    name {"foo #{' bar' if bar_extension}"} 
    end 
end 

# Factory(:user).name = "foo" 
# Factory(:user, :bar_extension => true).name = "foo bar" 

对于工厂女孩版本< 5.0：

FactoryGirl.define do 
    factory :user do 
    ignore do 
     bar_extension false 
    end 
    name {"foo #{' bar' if bar_extension}"} 
    end 
end 

# Factory(:user).name = "foo" 
# Factory(:user, :bar_extension => true).name = "foo bar" 

Answer 2

一种选择是创建额外的帖子虚拟访问了after_create钩检查：

class Blog 
    has_many :posts 
    attr_accessible :name, :title, ... # DB columns 
    attr_accessor :sample_posts  # virtual column 
end 

Factory.define :blog do |blog| 
    blog.name 'Blah' 

    blog.after_create do |b| 
    b.posts += b.sample_posts 
    b.save! 
    end 
end 

Factory(:blog, :sample_posts => [post1, post2]) 

Answer 3

另一种选择是使用build代替create并添加:autosave到集合：

class Blog 
    has_many :posts, :autosave => true 
end 

Factory.define :blog do |blog| 
    blog.name 'Blah' 
    blog.posts { |_| [Factory.build(:post)] } 
end 

Factory(:blog, :posts => [post1, post2]) 
#or 
Factory.build(:blog, :posts => [unsavedPost1, unsavedPost2]) 

Answer 4

显然，目前这是不可能的，没有需要修改模型本身的解决方法。此错误报告：http://github.com/thoughtbot/factory_girl/issues#issue/49

Answer 5

如果你打开factorygirl文件里面的类，我建议这样做，就像

require "user" 
class User 
    attr :post_count 
end 

让你打开类，而不是覆盖它