Grails域类的属性更改未标记为“脏”

Question

I have a transient method inside of my domain class that will update a property of the class. When I use this method the class is not marked as dirty and does not save.

class Major {
    String code
    String major

    static transients = ['update']

    def update(String newVal) {
        major = newVal
    }
}

Major major = Major.findByCode("ACAA");
major.update("NEW VALUE");
println("Is dirty? "+ major.dirty);  //Is dirty? false

When I update the property outside the method it works as expected and I can save

Major major = Major.findByCode("ACAA");
major.major = "NEW VALUE";
println("Is dirty? "+ major.dirty);  //Is dirty? true

Is there a reason this does not work?

Grails 3.3.1

GORM 6.1.6

Answer 1

The error lies in the update function. It needs to explicitly call the setter like this:

def update(String newVal) {
    setMajor(newVal)
}

For reference, see the GORM upgrade notes for the new dirty checking implementation .

Answer 2

That method does not need to be marked as transient. transient properties are usually used if you have a method named getThing() so it's not interpreted as the property thing that would need to be persisted.

Just remove the field from the transients list

http://docs.grails.org/3.3.1/ref/Domain%20Classes/transients.html