1 """

     2 13. Adding hooks before/after saving and deleting

     3 

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

     5 the methods.

     6 """

     7 

     8 from django.db import models

     9 

    10 class Person(models.Model):

    11     first_name = models.CharField(maxlength=20)

    12     last_name = models.CharField(maxlength=20)

    13 

    14     def __str__(self):

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

    16 

    17     def save(self):

    18         print "Before save"

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

    20         print "After save"

    21 

    22     def delete(self):

    23         print "Before deletion"

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

    25         print "After deletion"

    26 

    27 __test__ = {'API_TESTS':"""

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

    29 >>> p1.save()

    30 Before save

    31 After save

    32 

    33 >>> Person.objects.all()

    34 [<Person: John Smith>]

    35 

    36 >>> p1.delete()

    37 Before deletion

    38 After deletion

    39 

    40 >>> Person.objects.all()

    41 []

    42 """}