选择一个分类,在推荐标签就是显示出当前分类的标签。
在推荐标签点击一个标签,当前标签就会显示。
这样的联动效果怎么实现?
首先建立一张主表;里面存放分类,然后建立一张字表,存放标签,外键关联分类 一个分裂对应多个标签, 当我选择一个分类时,根据分类的ID去查询标签集合就可以了, 和省市级一样
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