mirror of
https://github.com/django/django.git
synced 2024-12-29 12:36:08 +00:00
45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
"""
|
|
33. get_or_create()
|
|
|
|
``get_or_create()`` does what it says: it tries to look up an object with the
|
|
given parameters. If an object isn't found, it creates one with the given
|
|
parameters.
|
|
"""
|
|
|
|
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=100)
|
|
last_name = models.CharField(max_length=100)
|
|
birthday = models.DateField()
|
|
|
|
def __str__(self):
|
|
return '%s %s' % (self.first_name, self.last_name)
|
|
|
|
|
|
class DefaultPerson(models.Model):
|
|
first_name = models.CharField(max_length=100, default="Anonymous")
|
|
|
|
|
|
class ManualPrimaryKeyTest(models.Model):
|
|
id = models.IntegerField(primary_key=True)
|
|
data = models.CharField(max_length=100)
|
|
|
|
|
|
class Profile(models.Model):
|
|
person = models.ForeignKey(Person, primary_key=True)
|
|
|
|
|
|
class Tag(models.Model):
|
|
text = models.CharField(max_length=255, unique=True)
|
|
|
|
|
|
class Thing(models.Model):
|
|
name = models.CharField(max_length=256)
|
|
tags = models.ManyToManyField(Tag)
|