belongsto

  • 网络多对一

belongstobelongsto

belongsto

多对一

多对一belongsTo)多对多(hasAndBelongsToMany) 我先查询(MyTest) 将主键值丢给最后一个资料表(OtherTest) 最 …

1
Remember that setting up the relationship with a belongsTo field means that deleting a Trip also deletes all related Flights. 请记住,使用belongsTo字段设置关系意味着,如果删除Trip,也会删除所有相关的Flight。
2
This line looks similar to the belongsTo variable used in one-to-many relationships. 该行看起来与一对多关系中使用的belongsTo变量类似。
3
First of all, the belongsTo field in Flight switched from a single value to a hashmap of values. 首先,Flight中的belongsTo字段由一个值转变为多个值的散列映射(hashmap)。