我目前正在建立一个铁路应用数据库。 该图形涉及三个模型:照片、物体和塔格。 照片和物体都需要“贴切”。
铁路提供一种多形态的结合,其结果是标的归属与照片和物体的关系;但不允许塔格属于。
One might solve this by having two independent HABTM relationships for tags to photos and tags to objects .
我很想知道,实现这一点是否有更有效的方法? 或者,或许我是从错误的方向来处理这个问题?
塔格斯是说什么东西的一种方式。
只使用一套标签就每一件事说几件事可能不明智。 我可以想象,像“1024x768”和“瞬间-冲锋枪”的标签,如果你试图就照片发表一些看法,是有用的,但如果你试图就物体发表一些看法,则不会真正有用。
我要说的是,我使用像“蓝色”这样的标签来指照片和物体。{photo_id,“blue”} 是否与{object_id,“blue”}相同? 我不认为这样做。
在我看来,最有效的解决办法似乎是使用一组标签来谈论照片,而另一套标签则对物体说一些。 这还可能更有利于用户。
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