The Grails Framework 3.2.8

(Quick Reference) ## getDirtyPropertyNames ### Purpose Retrieve the names of modified fields in a domain class instance. ### Examples
    def b = Book.get(1)
    someMethodThatMightModifyTheInstance(b)

    def names = b.dirtyPropertyNames
    for (name in names) {
        def originalValue = b.getPersistentValue(name)
        ...
    }
### Description This method is useful mostly for audit logging or other work done in a beforeUpdate event callback. Hibernate caches the original state of all loaded instances for dirty checking during a flush and this method exposes the names of modified fields so you can compare them with the current state. | Quick Reference (hide)