mirror of
https://github.com/django/django.git
synced 2024-12-23 01:25:58 +00:00
105 lines
3.0 KiB
Python
105 lines
3.0 KiB
Python
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",)
|
|
indexes = [
|
|
models.Index(fields=["headline", "pub_date"]),
|
|
models.Index(fields=["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),
|
|
),
|
|
]
|