mirror of https://github.com/django/django.git
36 lines
1.0 KiB
Python
36 lines
1.0 KiB
Python
|
"""
|
||
|
|
13. Adding hooks before/after saving and deleting
|
||
|
|
|
||
|
|
To execute arbitrary code around ``save()`` and ``delete()``, just subclass
|
||
|
|
the methods.
|
||
|
|
"""
|
||
|
from __future__ import unicode_literals
|
||
|
|
|
||
|
|
from django.db import models
|
||
|
from django.utils.encoding import python_2_unicode_compatible
|
||
|
|
|
||
|
|
||
|
|
@python_2_unicode_compatible
|
||
|
|
class Person(models.Model):
|
||
|
first_name = models.CharField(max_length=20)
|
||
|
|
last_name = models.CharField(max_length=20)
|
||
|
|
|
||
|
|
def __init__(self, *args, **kwargs):
|
||
|
|
super(Person, self).__init__(*args, **kwargs)
|
||
|
|
self.data = []
|
||
|
|
|
||
|
|
def __str__(self):
|
||
|
|
return "%s %s" % (self.first_name, self.last_name)
|
||
|
|
|
||
|
|
def save(self, *args, **kwargs):
|
||
|
|
self.data.append("Before save")
|
||
|
# Call the "real" save() method
|
||
|
|
super(Person, self).save(*args, **kwargs)
|
||
|
|
self.data.append("After save")
|
||
|
|
|
||
|
|
def delete(self):
|
||
|
|
self.data.append("Before deletion")
|
||
|
|
# Call the "real" delete() method
|
||
|
|
super(Person, self).delete()
|
||
|
|
self.data.append("After deletion")
|