I m 建造铁路3.2号不动产管理(区)应用程序。 单位和财产都有设施。 财产可能具有诸如“公共汽车路线”和“眼镜”等设施,而一个单位可能拥有“空调”和“无障碍”等设施。 我最初指定了我的房地产福利资源表amenities和加入表amenities_properties。 然而,现在我开始为I m的部队建造我的设施表,不能确定我应如何命名。 我可以读到<代码>amenities_properties和amenities_units。 但是,然后我打电话到合并的表格amenities_properties_properties和amenities_units_units? Seems weird to me.
最好有<代码>amenities。 表1. 哪类领域表明它是否属于单位或财产?
我要讲多吗?
善意。
#There s not a grammatically good way to turn "amenity" into a polymorphic name so...
belongs_to :amenitable, :polymorphic => true
财产、rb和单位。
has_many :amenities, :as => :amenitable
Making amenities polymorphic adds an amenitable_type and amenitable_id column to the amenities table.
因此,当你创造新的活力时,将<代码>menitable_type 至 unit 或 property (取决于您的模版名称)和amenitable_id至其所属单位或财产。
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