How to use _pre_delete method in localstack

Best Python code snippet using localstack_python

signals.py

Source:signals.py

...10    def register_modeldiff(self, model):11        pre_delete.connect(self.modeldiff_pre_delete, model)12    def register_geomodeldiff(self, model):13        pre_delete.connect(self.geomodeldiff_pre_delete, model)14    def modeldiff_pre_delete(self, sender, **kwargs):15        self._pre_delete(Modeldiff, sender, **kwargs)16    def geomodeldiff_pre_delete(self, sender, **kwargs):17        self._pre_delete(Geomodeldiff, sender, **kwargs)18    def _pre_delete(self, modeldiff_class, sender, **kwargs):19        instance = kwargs['instance']20        # see if we need to create a modeldiff to track the object deletion21        if hasattr(instance, '_modeldiff_ignore'):22            del instance._modeldiff_ignore23            return24        fields = sender.Modeldiff.fields25        diff = modeldiff_class()26        diff.applied = True27        diff.model_name = sender.Modeldiff.model_name28        diff.key = settings.MODELDIFF_KEY29        diff.username = self._get_username(instance)30        diff.model_id = instance.pk31        diff.action = 'delete'32        unique_field = getattr(sender.Modeldiff, 'unique_field', None)...

save_delete_hooks.py

Source:save_delete_hooks.py

...3Django provides hooks for executing arbitrary code around ``save()`` and4``delete()``. Just add any of the following methods to your model:5    * ``_pre_save()`` is called before an object is saved.6    * ``_post_save()`` is called after an object is saved.7    * ``_pre_delete()`` is called before an object is deleted.8    * ``_post_delete()`` is called after an object is deleted.9"""10from django.core import meta11class Person(meta.Model):12    first_name = meta.CharField(maxlength=20)13    last_name = meta.CharField(maxlength=20)14    def __repr__(self):15        return "%s %s" % (self.first_name, self.last_name)16    def _pre_save(self):17        print "Before save"18    def _post_save(self):19        print "After save"20    def _pre_delete(self):21        print "Before deletion"22    def _post_delete(self):23        print "After deletion"24API_TESTS = """25>>> p1 = persons.Person(first_name='John', last_name='Smith')26>>> p1.save()27Before save28After save29>>> persons.get_list()30[John Smith]31>>> p1.delete()32Before deletion33After deletion34>>> persons.get_list()...

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