mirror of
https://github.com/django/django.git
synced 2024-12-22 17:16:24 +00:00
579909a13f
Unnamed unique and check columns constraints have the same name as a column. Ensure uniqueness by using custom names. Thanks Adnan Umer for the report.
95 lines
2.7 KiB
Python
95 lines
2.7 KiB
Python
from django.db import models
|
|
|
|
|
|
class City(models.Model):
|
|
id = models.BigAutoField(primary_key=True)
|
|
name = models.CharField(max_length=50)
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
|
|
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)
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
|
|
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')
|
|
|
|
def __str__(self):
|
|
return "%s %s" % (self.first_name, self.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'],
|
|
]
|
|
|
|
def __str__(self):
|
|
return self.headline
|
|
|
|
|
|
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)),
|
|
]
|