/tests/modeltests/serializers/models.py
Python | 118 lines | 113 code | 0 blank | 5 comment | 0 complexity | 5eee04e15ec196696c1d6c9f1288a805 MD5 | raw file
Possible License(s): BSD-3-Clause
- # -*- coding: utf-8 -*-
- """
- 42. Serialization
- ``django.core.serializers`` provides interfaces to converting Django
- ``QuerySet`` objects to and from "flat" data (i.e. strings).
- """
- from decimal import Decimal
- from django.db import models
- class Category(models.Model):
- name = models.CharField(max_length=20)
- class Meta:
- ordering = ('name',)
- def __unicode__(self):
- return self.name
- class Author(models.Model):
- name = models.CharField(max_length=20)
- class Meta:
- ordering = ('name',)
- def __unicode__(self):
- return self.name
- class Article(models.Model):
- author = models.ForeignKey(Author)
- headline = models.CharField(max_length=50)
- pub_date = models.DateTimeField()
- categories = models.ManyToManyField(Category)
- class Meta:
- ordering = ('pub_date',)
- def __unicode__(self):
- return self.headline
- class AuthorProfile(models.Model):
- author = models.OneToOneField(Author, primary_key=True)
- date_of_birth = models.DateField()
- def __unicode__(self):
- return u"Profile of %s" % self.author
- class Actor(models.Model):
- name = models.CharField(max_length=20, primary_key=True)
- class Meta:
- ordering = ('name',)
- def __unicode__(self):
- return self.name
- class Movie(models.Model):
- actor = models.ForeignKey(Actor)
- title = models.CharField(max_length=50)
- price = models.DecimalField(max_digits=6, decimal_places=2, default=Decimal('0.00'))
- class Meta:
- ordering = ('title',)
- def __unicode__(self):
- return self.title
- class Score(models.Model):
- score = models.FloatField()
- class Team(object):
- def __init__(self, title):
- self.title = title
- def __unicode__(self):
- raise NotImplementedError("Not so simple")
- def __str__(self):
- raise NotImplementedError("Not so simple")
- def to_string(self):
- return "%s" % self.title
- class TeamField(models.CharField):
- __metaclass__ = models.SubfieldBase
- def __init__(self):
- super(TeamField, self).__init__(max_length=100)
- def get_db_prep_save(self, value, connection):
- return unicode(value.title)
- def to_python(self, value):
- if isinstance(value, Team):
- return value
- return Team(value)
- def value_to_string(self, obj):
- return self._get_val_from_obj(obj).to_string()
- class Player(models.Model):
- name = models.CharField(max_length=50)
- rank = models.IntegerField()
- team = TeamField()
- def __unicode__(self):
- return u'%s (%d) playing for %s' % (self.name, self.rank, self.team.to_string())