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Homephp教程php手册symfony2-创建提交表单生成数据过程,symfony2-表单

symfony2-创建提交表单生成数据过程,symfony2-表单

一、”一对多“关系

表shop(一)

表comment(多)

保存有shop_id

orm关系

Shop.orm.xml

Comment.orm.xml

 

二、首先我们来手动生成shop 和comment的关系

 

第一种情况 (可以生成)

controller中

可以生成表,对应关系

表shop

表:comment

 

 

因为这里shop表中的comments,其实并没有在shop表中有字段,这里只是一个记号,表示用来取comments方便。比如$shop->getComments();而且添加comment时方便。

 

第二种情况 (不可以生成)

如果改变addComments函数呢

不能生成表对应关系

表:shop

表:comment

为什么呢?

因为comment表id并没有和shop关联起来(即真实comment表中没有存上shop的id)

 

 

第三中情况:(可以生成表关系)

表:shop

表:comment

直接用往comment中添加shop

 

好了,其实还有“多对多”关系?

提交表时,如何自动生成一对多时关系?

下次说吧

 

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