I m getting "org.springframework.dao.DataIntegrityViolationException: not-null property references a null or transient value: A.b" exception on web flow in grails 1.1.2. there is
class B {
...
static belongsTo = [a:A]
...
}
以及
class A {
...
static hasMany = [b:B]
...
}
Does anyone know what is wrong? Thanks Tom
溶解。
还有一个不同的问题。 我没有坚持任何事情。 流动中序列化数据之间似乎有一些不一致之处,数据库中的数据一直存在。 因此,一个选择性的争论造成了这一例外。
这实际上将主要取决于您的参数,以及你如何重新处理建立或维护GORM的物体,而不是你的实际物体图。
Agree with @John. 一种共同的解决办法是,你应当把目标作为保留对象。
a.addToB(b)
a.save()
希望会有所助益。
这个问题与人力资源管理厅有关(我猜测你正在使用下文中解冻剂)。 如果你没收被绘制地图的特性的连带财产,这个问题将得到解决。
我不知道如何将它混入铁路,但这种秘密的理论应当有助于你了解问题所在之处:。
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