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git-svn-id: http://code.djangoproject.com/svn/django/trunk@13776 bcc190cf-cafb-0310-a4f2-bffc1f526a37
43 lines
1.1 KiB
Python
43 lines
1.1 KiB
Python
# -*- coding: utf-8 -*-
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"""
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14. Using a custom primary key
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By default, Django adds an ``"id"`` field to each model. But you can override
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this behavior by explicitly adding ``primary_key=True`` to a field.
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"""
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from django.conf import settings
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from django.db import models, transaction, IntegrityError, DEFAULT_DB_ALIAS
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from fields import MyAutoField
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class Employee(models.Model):
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employee_code = models.IntegerField(primary_key=True, db_column = 'code')
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first_name = models.CharField(max_length=20)
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last_name = models.CharField(max_length=20)
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class Meta:
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ordering = ('last_name', 'first_name')
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def __unicode__(self):
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return u"%s %s" % (self.first_name, self.last_name)
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class Business(models.Model):
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name = models.CharField(max_length=20, primary_key=True)
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employees = models.ManyToManyField(Employee)
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class Meta:
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verbose_name_plural = 'businesses'
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def __unicode__(self):
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return self.name
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class Bar(models.Model):
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id = MyAutoField(primary_key=True, db_index=True)
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def __unicode__(self):
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return repr(self.pk)
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class Foo(models.Model):
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bar = models.ForeignKey(Bar)
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