2006-05-02 01:31:56 +00:00
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"""
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2014-09-24 05:13:13 +00:00
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The lookup API
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2006-05-02 01:31:56 +00:00
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This demonstrates features of the database API.
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"""
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2011-07-13 09:35:51 +00:00
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from django.db import models
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2006-05-02 01:31:56 +00:00
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2011-10-13 18:04:12 +00:00
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2015-05-22 19:16:26 +00:00
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class Alarm(models.Model):
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desc = models.CharField(max_length=100)
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time = models.TimeField()
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def __str__(self):
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return '%s (%s)' % (self.time, self.desc)
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2013-06-10 10:24:45 +00:00
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class Author(models.Model):
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name = models.CharField(max_length=100)
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2013-10-22 10:21:07 +00:00
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2013-06-10 10:24:45 +00:00
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class Meta:
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2017-12-28 20:07:29 +00:00
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ordering = ('name',)
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2013-06-10 10:24:45 +00:00
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2013-11-03 04:36:09 +00:00
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2013-06-10 10:24:45 +00:00
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class Article(models.Model):
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headline = models.CharField(max_length=100)
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pub_date = models.DateTimeField()
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2015-07-22 14:43:21 +00:00
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author = models.ForeignKey(Author, models.SET_NULL, blank=True, null=True)
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2017-03-28 15:57:23 +00:00
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slug = models.SlugField(unique=True, blank=True, null=True)
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2013-10-22 10:21:07 +00:00
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2013-06-10 10:24:45 +00:00
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class Meta:
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ordering = ('-pub_date', 'headline')
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def __str__(self):
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return self.headline
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2010-11-21 02:28:25 +00:00
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2013-11-03 04:36:09 +00:00
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2010-11-21 02:28:25 +00:00
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class Tag(models.Model):
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2013-06-10 10:24:45 +00:00
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articles = models.ManyToManyField(Article)
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2010-11-21 02:28:25 +00:00
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name = models.CharField(max_length=100)
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2013-10-22 10:21:07 +00:00
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2010-11-21 02:28:25 +00:00
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class Meta:
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2017-12-28 20:07:29 +00:00
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ordering = ('name',)
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2012-02-05 07:11:53 +00:00
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2013-11-03 04:36:09 +00:00
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2017-07-30 20:01:45 +00:00
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class NulledTextField(models.TextField):
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2017-07-30 17:00:00 +00:00
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def get_prep_value(self, value):
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return None if value == '' else value
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2017-07-30 20:01:45 +00:00
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@NulledTextField.register_lookup
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class NulledTransform(models.Transform):
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lookup_name = 'nulled'
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template = 'NULL'
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2012-02-05 07:11:53 +00:00
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class Season(models.Model):
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year = models.PositiveSmallIntegerField()
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gt = models.IntegerField(null=True, blank=True)
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2017-07-30 20:01:45 +00:00
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nulled_text_field = NulledTextField(null=True)
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2012-02-05 07:11:53 +00:00
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2012-08-12 10:32:08 +00:00
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def __str__(self):
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2016-12-29 15:27:49 +00:00
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return str(self.year)
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2012-02-05 07:11:53 +00:00
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2013-11-03 04:36:09 +00:00
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2012-02-05 07:11:53 +00:00
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class Game(models.Model):
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2015-07-22 14:43:21 +00:00
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season = models.ForeignKey(Season, models.CASCADE, related_name='games')
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2012-02-05 07:11:53 +00:00
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home = models.CharField(max_length=100)
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away = models.CharField(max_length=100)
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2012-08-12 10:32:08 +00:00
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def __str__(self):
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2012-06-07 16:08:47 +00:00
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return "%s at %s" % (self.away, self.home)
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2012-02-05 07:11:53 +00:00
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2013-11-03 04:36:09 +00:00
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2012-02-05 07:11:53 +00:00
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class Player(models.Model):
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name = models.CharField(max_length=100)
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games = models.ManyToManyField(Game, related_name='players')
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2012-08-12 10:32:08 +00:00
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def __str__(self):
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2012-06-07 16:08:47 +00:00
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return self.name
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2014-04-22 20:01:16 +00:00
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2016-12-10 18:05:34 +00:00
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class Product(models.Model):
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name = models.CharField(max_length=80)
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qty_target = models.DecimalField(max_digits=6, decimal_places=2)
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class Stock(models.Model):
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product = models.ForeignKey(Product, models.CASCADE)
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qty_available = models.DecimalField(max_digits=6, decimal_places=2)
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