1
我有两个模型共享一些相同的属性,所以我想设置一个表继承结构。之后做一些研究,我发现我可以用模块通过执行来实现相同的,而不是执行以下操作:在模型之间共享属性 - Datamapper
module CommonFields
def self.included base
base.class_eval do
include DataMapper::Resource
property :type, base::Discriminator
property :enable_feature1, base::Boolean, :default => false
property :enable_feature2, base::Boolean, :default => false
end
end
end
class A
include CommonFields
property: title, String
end
class B
include CommonFields
end
然而,当我这样做耙分贝:automigrate我得到:
未定义的方法`性质'for CommonFields:Module /usr/local/rvm/gems/ruby-1.9.2-p290/gems/dm-core-1.2.0/lib/dm-core/associations/relationship.rb:252:in`parent_key '
任何想法?
感谢,
保罗
同样的问题在这里......你是怎么做到的? –