| import datetime |
| import uuid |
| from decimal import Decimal |
|
|
| from django.db import models |
| from django.utils import timezone |
|
|
| try: |
| from PIL import Image |
| except ImportError: |
| Image = None |
|
|
|
|
| class Country(models.Model): |
| name = models.CharField(max_length=255) |
| iso_two_letter = models.CharField(max_length=2) |
| description = models.TextField() |
|
|
| class Meta: |
| constraints = [ |
| models.UniqueConstraint( |
| fields=["iso_two_letter", "name"], |
| name="country_name_iso_unique", |
| ), |
| ] |
|
|
|
|
| class ProxyCountry(Country): |
| class Meta: |
| proxy = True |
|
|
|
|
| class ProxyProxyCountry(ProxyCountry): |
| class Meta: |
| proxy = True |
|
|
|
|
| class ProxyMultiCountry(ProxyCountry): |
| pass |
|
|
|
|
| class ProxyMultiProxyCountry(ProxyMultiCountry): |
| class Meta: |
| proxy = True |
|
|
|
|
| class Place(models.Model): |
| name = models.CharField(max_length=100) |
|
|
| class Meta: |
| abstract = True |
|
|
|
|
| class Restaurant(Place): |
| pass |
|
|
|
|
| class Pizzeria(Restaurant): |
| pass |
|
|
|
|
| class State(models.Model): |
| two_letter_code = models.CharField(max_length=2, primary_key=True) |
|
|
|
|
| class TwoFields(models.Model): |
| f1 = models.IntegerField(unique=True) |
| f2 = models.IntegerField(unique=True) |
| name = models.CharField(max_length=15, null=True) |
|
|
|
|
| class FieldsWithDbColumns(models.Model): |
| rank = models.IntegerField(unique=True, db_column="rAnK") |
| name = models.CharField(max_length=15, null=True, db_column="oTheRNaMe") |
|
|
|
|
| class UpsertConflict(models.Model): |
| number = models.IntegerField(unique=True) |
| rank = models.IntegerField() |
| name = models.CharField(max_length=15) |
|
|
|
|
| class NoFields(models.Model): |
| pass |
|
|
|
|
| class SmallAutoFieldModel(models.Model): |
| id = models.SmallAutoField(primary_key=True) |
|
|
|
|
| class BigAutoFieldModel(models.Model): |
| id = models.BigAutoField(primary_key=True) |
|
|
|
|
| class NullableFields(models.Model): |
| |
| big_int_filed = models.BigIntegerField(null=True, default=1) |
| binary_field = models.BinaryField(null=True, default=b"data") |
| date_field = models.DateField(null=True, default=timezone.now) |
| datetime_field = models.DateTimeField(null=True, default=timezone.now) |
| decimal_field = models.DecimalField( |
| null=True, max_digits=2, decimal_places=1, default=Decimal("1.1") |
| ) |
| duration_field = models.DurationField(null=True, default=datetime.timedelta(1)) |
| float_field = models.FloatField(null=True, default=3.2) |
| integer_field = models.IntegerField(null=True, default=2) |
| null_boolean_field = models.BooleanField(null=True, default=False) |
| positive_big_integer_field = models.PositiveBigIntegerField( |
| null=True, default=2**63 - 1 |
| ) |
| positive_integer_field = models.PositiveIntegerField(null=True, default=3) |
| positive_small_integer_field = models.PositiveSmallIntegerField( |
| null=True, default=4 |
| ) |
| small_integer_field = models.SmallIntegerField(null=True, default=5) |
| time_field = models.TimeField(null=True, default=timezone.now) |
| auto_field = models.ForeignKey(NoFields, on_delete=models.CASCADE, null=True) |
| small_auto_field = models.ForeignKey( |
| SmallAutoFieldModel, on_delete=models.CASCADE, null=True |
| ) |
| big_auto_field = models.ForeignKey( |
| BigAutoFieldModel, on_delete=models.CASCADE, null=True |
| ) |
| |
| char_field = models.CharField(null=True, max_length=4, default="char") |
| email_field = models.EmailField(null=True, default="user@example.com") |
| file_field = models.FileField(null=True, default="file.txt") |
| file_path_field = models.FilePathField(path="/tmp", null=True, default="file.txt") |
| generic_ip_address_field = models.GenericIPAddressField( |
| null=True, default="127.0.0.1" |
| ) |
| if Image: |
| image_field = models.ImageField(null=True, default="image.jpg") |
| slug_field = models.SlugField(null=True, default="slug") |
| text_field = models.TextField(null=True, default="text") |
| url_field = models.URLField(null=True, default="/") |
| uuid_field = models.UUIDField(null=True, default=uuid.uuid4) |
|
|
|
|
| class RelatedModel(models.Model): |
| name = models.CharField(max_length=15, null=True) |
| country = models.OneToOneField(Country, models.CASCADE, primary_key=True) |
| big_auto_fields = models.ManyToManyField(BigAutoFieldModel) |
|
|