mirror of
https://github.com/django/django.git
synced 2024-12-22 17:16:24 +00:00
159 lines
4.1 KiB
Python
159 lines
4.1 KiB
Python
from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation
|
|
from django.contrib.contenttypes.models import ContentType
|
|
from django.db import models
|
|
|
|
|
|
class Square(models.Model):
|
|
root = models.IntegerField()
|
|
square = models.PositiveIntegerField()
|
|
|
|
def __str__(self):
|
|
return "%s ** 2 == %s" % (self.root, self.square)
|
|
|
|
|
|
class Person(models.Model):
|
|
first_name = models.CharField(max_length=20)
|
|
last_name = models.CharField(max_length=20)
|
|
|
|
def __str__(self):
|
|
return "%s %s" % (self.first_name, self.last_name)
|
|
|
|
|
|
class SchoolClassManager(models.Manager):
|
|
def get_queryset(self):
|
|
return super().get_queryset().exclude(year=1000)
|
|
|
|
|
|
class SchoolClass(models.Model):
|
|
year = models.PositiveIntegerField()
|
|
day = models.CharField(max_length=9, blank=True)
|
|
last_updated = models.DateTimeField()
|
|
|
|
objects = SchoolClassManager()
|
|
|
|
|
|
class VeryLongModelNameZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ(models.Model):
|
|
primary_key_is_quite_long_zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz = models.AutoField(
|
|
primary_key=True
|
|
)
|
|
charfield_is_quite_long_zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz = models.CharField(
|
|
max_length=100
|
|
)
|
|
m2m_also_quite_long_zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz = (
|
|
models.ManyToManyField(Person, blank=True)
|
|
)
|
|
|
|
|
|
class Tag(models.Model):
|
|
name = models.CharField(max_length=30)
|
|
content_type = models.ForeignKey(
|
|
ContentType, models.CASCADE, related_name="backend_tags"
|
|
)
|
|
object_id = models.PositiveIntegerField()
|
|
content_object = GenericForeignKey("content_type", "object_id")
|
|
|
|
|
|
class Post(models.Model):
|
|
name = models.CharField(max_length=30)
|
|
text = models.TextField()
|
|
tags = GenericRelation("Tag")
|
|
|
|
class Meta:
|
|
db_table = "CaseSensitive_Post"
|
|
|
|
|
|
class Reporter(models.Model):
|
|
first_name = models.CharField(max_length=30)
|
|
last_name = models.CharField(max_length=30)
|
|
|
|
def __str__(self):
|
|
return "%s %s" % (self.first_name, self.last_name)
|
|
|
|
|
|
class ReporterProxy(Reporter):
|
|
class Meta:
|
|
proxy = True
|
|
|
|
|
|
class Article(models.Model):
|
|
headline = models.CharField(max_length=100)
|
|
pub_date = models.DateField()
|
|
reporter = models.ForeignKey(Reporter, models.CASCADE)
|
|
reporter_proxy = models.ForeignKey(
|
|
ReporterProxy,
|
|
models.SET_NULL,
|
|
null=True,
|
|
related_name="reporter_proxy",
|
|
)
|
|
|
|
def __str__(self):
|
|
return self.headline
|
|
|
|
|
|
class Item(models.Model):
|
|
name = models.CharField(max_length=30)
|
|
date = models.DateField()
|
|
time = models.TimeField()
|
|
last_modified = models.DateTimeField()
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
|
|
class Object(models.Model):
|
|
related_objects = models.ManyToManyField(
|
|
"self", db_constraint=False, symmetrical=False
|
|
)
|
|
obj_ref = models.ForeignKey("ObjectReference", models.CASCADE, null=True)
|
|
|
|
def __str__(self):
|
|
return str(self.id)
|
|
|
|
|
|
class ObjectReference(models.Model):
|
|
obj = models.ForeignKey(Object, models.CASCADE, db_constraint=False)
|
|
|
|
def __str__(self):
|
|
return str(self.obj_id)
|
|
|
|
|
|
class ObjectSelfReference(models.Model):
|
|
key = models.CharField(max_length=3, unique=True)
|
|
obj = models.ForeignKey("ObjectSelfReference", models.SET_NULL, null=True)
|
|
|
|
|
|
class CircularA(models.Model):
|
|
key = models.CharField(max_length=3, unique=True)
|
|
obj = models.ForeignKey("CircularB", models.SET_NULL, null=True)
|
|
|
|
def natural_key(self):
|
|
return (self.key,)
|
|
|
|
|
|
class CircularB(models.Model):
|
|
key = models.CharField(max_length=3, unique=True)
|
|
obj = models.ForeignKey("CircularA", models.SET_NULL, null=True)
|
|
|
|
def natural_key(self):
|
|
return (self.key,)
|
|
|
|
|
|
class RawData(models.Model):
|
|
raw_data = models.BinaryField()
|
|
|
|
|
|
class Author(models.Model):
|
|
name = models.CharField(max_length=255, unique=True)
|
|
|
|
|
|
class Book(models.Model):
|
|
author = models.ForeignKey(Author, models.CASCADE, to_field="name")
|
|
|
|
|
|
class SQLKeywordsModel(models.Model):
|
|
id = models.AutoField(primary_key=True, db_column="select")
|
|
reporter = models.ForeignKey(Reporter, models.CASCADE, db_column="where")
|
|
|
|
class Meta:
|
|
db_table = "order"
|