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from django.db import models
class City(models.Model):
id = models.BigAutoField(primary_key=True)
name = models.CharField(max_length=50)
class Country(models.Model):
id = models.SmallAutoField(primary_key=True)
name = models.CharField(max_length=50)
class District(models.Model):
city = models.ForeignKey(City, models.CASCADE, primary_key=True)
name = models.CharField(max_length=50)
class Reporter(models.Model):
first_name = models.CharField(max_length=30)
last_name = models.CharField(max_length=30)
email = models.EmailField()
facebook_user_id = models.BigIntegerField(null=True)
raw_data = models.BinaryField(null=True)
small_int = models.SmallIntegerField()
interval = models.DurationField()
class Meta:
unique_together = ('first_name', 'last_name')
class Article(models.Model):
headline = models.CharField(max_length=100)
pub_date = models.DateField()
body = models.TextField(default='')
reporter = models.ForeignKey(Reporter, models.CASCADE)
response_to = models.ForeignKey('self', models.SET_NULL, null=True)
unmanaged_reporters = models.ManyToManyField(Reporter, through='ArticleReporter', related_name='+')
class Meta:
ordering = ('headline',)
index_together = [
["headline", "pub_date"],
['headline', 'response_to', 'pub_date', 'reporter'],
]
class ArticleReporter(models.Model):
article = models.ForeignKey(Article, models.CASCADE)
reporter = models.ForeignKey(Reporter, models.CASCADE)
class Meta:
managed = False
class Comment(models.Model):
ref = models.UUIDField(unique=True)
article = models.ForeignKey(Article, models.CASCADE, db_index=True)
email = models.EmailField()
pub_date = models.DateTimeField()
body = models.TextField()
class Meta:
constraints = [
models.UniqueConstraint(fields=['article', 'email', 'pub_date'], name='article_email_pub_date_uniq'),
]
indexes = [
models.Index(fields=['email', 'pub_date'], name='email_pub_date_idx'),
]
class CheckConstraintModel(models.Model):
up_votes = models.PositiveIntegerField()
voting_number = models.PositiveIntegerField(unique=True)
class Meta:
required_db_features = {
'supports_table_check_constraints',
}
constraints = [
models.CheckConstraint(name='up_votes_gte_0_check', check=models.Q(up_votes__gte=0)),
]
class UniqueConstraintConditionModel(models.Model):
name = models.CharField(max_length=255)
color = models.CharField(max_length=32, null=True)
class Meta:
required_db_features = {'supports_partial_indexes'}
constraints = [
models.UniqueConstraint(
fields=['name'],
name='cond_name_without_color_uniq',
condition=models.Q(color__isnull=True),
),
]
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