Question

我有一个班级

Gate < ActiveRecord::Base
  self.inheritance_column = :kindof
# some methods
end
#  and derived
MoneyHaters < Gate
# some overloaded methods
end

带有type column：kindof for STI 。

Durning测试我想创建一个2-3个孩子。主要是因为每个派生类在应用程序中必须是唯一的。像那样：

factory :gate do
  before(:create) do
    gate_name  = FFaker::Company.name.gsub( /\s+/,'' )
    gate_class_name = gate_name.singularize.classify
  end

  name { gate_name }

  # I want that next class will be declared in App namespace, like all others.
  gate_class  = Class.new(Gate) do
    def comission_in(amount)
      amount * 0.01 + 5
    end
    def comission_out(amount)
      amount * 0.02 + 5
    end
  end
  Object.const_set( gate_class_name, gate_class )

  type { gate_class_name }
  country { FFaker::Address.country_code }
end

代码在使用rspec在“Object.const_set”

行中运行时给出了错误

TypeError: #<FactoryGirl::Declaration::Implicit:0x00000006a1af30 @name=:gate_class_name, @ignored=false, @factory=#<FactoryGirl::Definition:0x00000006ed6df8 @declarations=#<FactoryGirl::DeclarationList:0x00000006ed6dd0 @declarations=[#<FactoryGirl::Declaration::Dynamic:0x00000006ed6998 @name=:name, @ignored=false, @block=#<Proc:0x00000006ed69c0@[skipped]>>, #<FactoryGirl::Declaration::Implicit:0x00000006a1af30 ...>], @name=:gate, @overridable=false>, @callbacks=[#<FactoryGirl::Callback:0x00000006ed6a38 @name=:before_create, @block=#<Proc:0x00000006ed6ba0@[skipped]>>], @defined_traits=#<Set: {}>, @to_create=nil, @base_traits=[], @additional_traits=[], @constructor=nil, @attributes=nil, @compiled=false>> is not a symbol nor a string

但在rails控制台中正常工作

通常我会调用FactoryGirl工厂来创建对象，但是，如果这是不可能的 - 我想知道其他方法是什么。

非常感谢任何帮助。

Answer 1

好的，我在发布问题前花了大约两个小时，但我发现只有在发布=）后才能找到答案

我只需要在属性的一个中移动类定义。

FactoryGirl.define do
  factory :gate do

    name { FFaker::Company.name }
    type { 
      class_name = 'Gate' + name.gsub( /[[:blank:][:cntrl:][:punct:]]/,'' ).to_s.singularize
      gate_class = class_name.classify
      class_instance  = Class.new(Gate) do
        def comission_in(amount)
          amount * 0.01 + 5
        end
        def comission_out(amount)
          amount * 0.02 + 5
        end
      end
      Object.const_set( gate_class, class_instance )
      puts " gate_class: '#{ gate_class }'; name: '#{ name }';"
      class_name
    }
    country { FFaker::Address.country_code }

  end
end

在测试期间创建一些类（STI）

1 个答案: