mirror of https://github.com/django/django.git
113 lines
3.3 KiB
Python
113 lines
3.3 KiB
Python
from django.db import models
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class City(models.Model):
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id = models.BigAutoField(primary_key=True)
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name = models.CharField(max_length=50)
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class Country(models.Model):
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id = models.SmallAutoField(primary_key=True)
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name = models.CharField(max_length=50)
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class District(models.Model):
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city = models.ForeignKey(City, models.CASCADE, primary_key=True)
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name = models.CharField(max_length=50)
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class Reporter(models.Model):
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first_name = models.CharField(max_length=30)
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last_name = models.CharField(max_length=30)
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email = models.EmailField()
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facebook_user_id = models.BigIntegerField(null=True)
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raw_data = models.BinaryField(null=True)
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small_int = models.SmallIntegerField()
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interval = models.DurationField()
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class Meta:
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unique_together = ("first_name", "last_name")
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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.DateField()
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body = models.TextField(default="")
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reporter = models.ForeignKey(Reporter, models.CASCADE)
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response_to = models.ForeignKey("self", models.SET_NULL, null=True)
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unmanaged_reporters = models.ManyToManyField(
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Reporter, through="ArticleReporter", related_name="+"
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)
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class Meta:
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ordering = ("headline",)
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indexes = [
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models.Index(fields=["headline", "pub_date"]),
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models.Index(fields=["headline", "response_to", "pub_date", "reporter"]),
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]
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class ArticleReporter(models.Model):
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article = models.ForeignKey(Article, models.CASCADE)
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reporter = models.ForeignKey(Reporter, models.CASCADE)
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class Meta:
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managed = False
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class Comment(models.Model):
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ref = models.UUIDField(unique=True)
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article = models.ForeignKey(Article, models.CASCADE, db_index=True)
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email = models.EmailField()
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pub_date = models.DateTimeField()
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body = models.TextField()
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class Meta:
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constraints = [
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models.UniqueConstraint(
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fields=["article", "email", "pub_date"],
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name="article_email_pub_date_uniq",
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),
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]
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indexes = [
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models.Index(fields=["email", "pub_date"], name="email_pub_date_idx"),
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]
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class CheckConstraintModel(models.Model):
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up_votes = models.PositiveIntegerField()
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voting_number = models.PositiveIntegerField(unique=True)
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class Meta:
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required_db_features = {
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"supports_table_check_constraints",
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}
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constraints = [
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models.CheckConstraint(
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name="up_votes_gte_0_check", condition=models.Q(up_votes__gte=0)
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),
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]
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class UniqueConstraintConditionModel(models.Model):
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name = models.CharField(max_length=255)
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color = models.CharField(max_length=32, null=True)
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class Meta:
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required_db_features = {"supports_partial_indexes"}
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constraints = [
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models.UniqueConstraint(
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fields=["name"],
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name="cond_name_without_color_uniq",
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condition=models.Q(color__isnull=True),
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),
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]
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class DbCommentModel(models.Model):
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name = models.CharField(max_length=15, db_comment="'Name' column comment")
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class Meta:
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db_table_comment = "Custom table comment"
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required_db_features = {"supports_comments"}
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