自定义字段的实现方式有什么呢？
我的想法是将用户输入字段信息用一个单独的表来保存，在输出表单时再从数据库读取各个字段的类型等信息，这样做合理么？
------解决方案--------------------
自定义字段。
首先一个表保存自定义字段的名称。
然后在用别的表存放自定义字段id和相应的id和这个自定义字段的值。
------解决方案--------------------
应该需要
form表
field表
data表
------解决方案--------------------
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