SonataAdminBundle - check changes in `preUpdate` hook

Question

Is it possible to check if field was changed on preUpdate hook? I\'m looking for something like preUpdate hasChangedField($fieldName) Doctrine functionality. An

Answer 1

For me the best approach is this in Sonata Admin:

$newField = $this->getForm()->get('field')->getData();
$oldField = $this->getForm()->get('field')->getConfig()->getData();

You shouldn't use unit of work unless there is no option. Also, if you have a not mapped field, you can't access it by entity object.

In a normal Doctrine lyfe cycle event, the best option is Doctrine preupdate event doc