The Grails Framework 3.1.1

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(Quick Reference) # discard ## Purpose Discards any changes that have been made to a persistent instance. ## Examples
    def b = Book.get(1)
    b.title = "Blah"
    b.discard() // changes won't be applied now
## Description The `discard` method informs the persistence context that the instance should not be saved. The `discard` method is equivalent to using Hibernate's evict method. Note that this method will not clean or reset the object with the original values; it will just prevent it from being automatically saved by Grails. | Quick Reference (hide)