"""

13. Adding hooks before/after saving and deleting

To execute arbitrary code around ``save()`` and ``delete()``, just subclass

the methods.

"""

from django.db import models

class Person(models.Model):

    first_name = models.CharField(maxlength=20)

    last_name = models.CharField(maxlength=20)

    def __str__(self):

        return "%s %s" % (self.first_name, self.last_name)

    def save(self):

        print "Before save"

        super(Person, self).save() # Call the "real" save() method

        print "After save"

    def delete(self):

        print "Before deletion"

        super(Person, self).delete() # Call the "real" delete() method

        print "After deletion"

__test__ = {'API_TESTS':"""

>>> p1 = Person(first_name='John', last_name='Smith')

>>> p1.save()

Before save

After save

>>> Person.objects.all()

[<Person: John Smith>]

>>> p1.delete()

Before deletion

After deletion

>>> Person.objects.all()

[]

"""}