如何创建具有多个依赖于同一父级的关联的Factory?
父模型:
class Parent < ActiveRecord::Base
has_many :codes
has_many :parent_filters
validates :parent, :presence => true, :uniqueness => true
end
Fitler型号:
class Filter < ActiveRecord::base
has_many :parent_filters
validates :filter, :presence => true, :uniqueness => true
end
ParentFilter连接模型:
class ParentFilter < ActiveRecord
belongs_to :parent
belongs_to :filter
validates :filter, :presence => true
validates :parent, :filter, :presence => true, :uniqueness => [ :scope => filter ]
end
AdhocAttribute模型:
class AdhocAttribute < ActiveRecord::Base
has_many :adhoc_mappings
has_many :codes, :through => :adhoc_mappings
has_many :parent_filters, :through => adhoc_mappings
validates :adhoc_attribute, :presence => true, :uniqueness => true
end
代码模型:
class Code < ActiveRecord::Base
belongs_to :parent
has_many :adhoc_mappings
has_many :adhoc_attributes, :through => :adhoc_mappings
validates :code, :parent, presence: true
validates :code, uniqueness: {case_sensitive: false}
end
最后但并非最不重要的是,ad-hoc映射模型。这个模型允许每个代码为每个ParentFilter分配一个adhoc属性,这是我试图创建的工厂。这个工厂应该要求ParentFilter和Code的Parent都是相同的(我将添加一个自定义验证,以便在我获得功能工厂后强制执行)。
class AdHocMapping < ActiveRecord::Base
belongs_to :code
belongs_to :parent_filter
belongs_to :adhoc_attribute
has_one :company, :through => :parent_filter
validates :code, :parent_filter, presence: true
validates :code, :uniqueness => { :scope => :parent_filter }
end
如果我要使用直接的ActiveRecord创建一个AdhocMapping,我会建立起来像这样:
p = Parent.where(:parent => "Papa").first_or_create
aa = AdhocAttribute(:adhoc_attribute => "Doodle").first_or_create
f = Filter.where(:filter => "Z..W").first_or_create
c = Code.where(:code => "ZYXW", :parent => p).first_or_create
pf = ParentFilter.where(:parent => p, :filter => f).first_or_create
am = AdhocMapping(:adhoc_attribute => aa, :parent_filter => pf, :code => :c).first_or_create
以便分配给AdhocMapping的Code和ParentFilter具有相同的Parent。我已经尝试了许多不同的方法来尝试在FactoryGirl中使用它,但我似乎无法创建该对象。
这是我认为最接近我想要的工厂:
require 'faker'
FactoryGirl.define do
factory :adhoc_mapping do |f|
transient do
p Parent.where(:parent => Faker::Lorem.word).first_or_create
end
association :parent_filter, :parent => p
association :code, :parent => p
association :adhoc_attribute
end
end
它给出了Trait not registered: p
答案 0 :(得分:1)
对于关联,我通常在after(:build)
中使用FactoryGirl
,然后我可以确切地说明应该发生什么。 (association xxx
经常不像我想要的那样工作,对我感到羞耻。)
所以在你的情况下,我认为你可以解决这个问题:
require 'faker'
FactoryGirl.define do
factory :adhoc_mapping do |f|
transient do
default_parent { Parent.where(parent: Faker::Lorem.word).first_or_create }
parent_filter { FactoryGirl.build(:parent_filter, parent: default_parent) }
code { FactoryGild.build(:code, parent: default_parent) }
adhoc_attribute { FactoryGirl.build(:adhoc_attribute) }
end
after(:build) do |adhoc_mapping, evaluator|
adhoc_mapping.parent_filter = evaluator.parent_filter
adhoc_mapping.code = evaluator.code
adhoc_mapping.adhoc_attribute = evaluator.adhoc_attribute
end
end
end
使用after(:build)
,它适用于FactoryGirl.create
或FactoryGirl.build
。除了transient default_parent
之外,您甚至可以在构建adhoc_mapping
时明确设置您希望拥有的父级。现在,在编辑之后,您还可以将nil
传递给属性,但不会被覆盖。