django/tests/lookup/models.py

91 lines
2.1 KiB
Python

"""
The lookup API
This demonstrates features of the database API.
"""
from django.db import models
class Alarm(models.Model):
desc = models.CharField(max_length=100)
time = models.TimeField()
def __str__(self):
return '%s (%s)' % (self.time, self.desc)
class Author(models.Model):
name = models.CharField(max_length=100)
class Meta:
ordering = ('name',)
class Article(models.Model):
headline = models.CharField(max_length=100)
pub_date = models.DateTimeField()
author = models.ForeignKey(Author, models.SET_NULL, blank=True, null=True)
slug = models.SlugField(unique=True, blank=True, null=True)
class Meta:
ordering = ('-pub_date', 'headline')
def __str__(self):
return self.headline
class Tag(models.Model):
articles = models.ManyToManyField(Article)
name = models.CharField(max_length=100)
class Meta:
ordering = ('name',)
class NulledTextField(models.TextField):
def get_prep_value(self, value):
return None if value == '' else value
@NulledTextField.register_lookup
class NulledTransform(models.Transform):
lookup_name = 'nulled'
template = 'NULL'
class Season(models.Model):
year = models.PositiveSmallIntegerField()
gt = models.IntegerField(null=True, blank=True)
nulled_text_field = NulledTextField(null=True)
def __str__(self):
return str(self.year)
class Game(models.Model):
season = models.ForeignKey(Season, models.CASCADE, related_name='games')
home = models.CharField(max_length=100)
away = models.CharField(max_length=100)
def __str__(self):
return "%s at %s" % (self.away, self.home)
class Player(models.Model):
name = models.CharField(max_length=100)
games = models.ManyToManyField(Game, related_name='players')
def __str__(self):
return self.name
class Product(models.Model):
name = models.CharField(max_length=80)
qty_target = models.DecimalField(max_digits=6, decimal_places=2)
class Stock(models.Model):
product = models.ForeignKey(Product, models.CASCADE)
qty_available = models.DecimalField(max_digits=6, decimal_places=2)