def b = Book.get(1)
someMethodThatMightModifyTheInstance(b)
// when called without arguments returns true if any field was changed
if (b.isDirty()) {
// can also check if one field has changed
if (b.isDirty('title')) {
...
}
}isDirty
用途
检查某个领域类实例是否已被修改。
示例
说明
参数
-
fieldName- 要检查的字段名称