mirror of
https://github.com/django/django.git
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546 lines
15 KiB
Python
546 lines
15 KiB
Python
import datetime
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import os
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import tempfile
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import uuid
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from django.core import validators
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from django.core.exceptions import ValidationError
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from django.core.files.storage import FileSystemStorage
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from django.db import models
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temp_storage_dir = tempfile.mkdtemp()
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temp_storage = FileSystemStorage(temp_storage_dir)
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class Person(models.Model):
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name = models.CharField(max_length=100)
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class Category(models.Model):
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name = models.CharField(max_length=20)
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slug = models.SlugField(max_length=20)
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url = models.CharField("The URL", max_length=40)
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class Meta:
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ordering = ("pk",)
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def __str__(self):
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return self.name
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def __repr__(self):
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return self.__str__()
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class WriterManager(models.Manager):
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def get_queryset(self):
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qs = super().get_queryset()
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return qs.filter(archived=False)
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class Writer(models.Model):
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name = models.CharField(max_length=50, help_text="Use both first and last names.")
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archived = models.BooleanField(default=False, editable=False)
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objects = WriterManager()
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class Meta:
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ordering = ("name",)
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def __str__(self):
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return self.name
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class Article(models.Model):
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ARTICLE_STATUS = (
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(1, "Draft"),
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(2, "Pending"),
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(3, "Live"),
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)
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headline = models.CharField(max_length=50)
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slug = models.SlugField()
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pub_date = models.DateField()
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created = models.DateField(editable=False)
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writer = models.ForeignKey(Writer, models.CASCADE)
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article = models.TextField()
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categories = models.ManyToManyField(Category, blank=True)
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status = models.PositiveIntegerField(choices=ARTICLE_STATUS, blank=True, null=True)
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def save(self, *args, **kwargs):
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if not self.id:
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self.created = datetime.date.today()
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return super().save(*args, **kwargs)
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def __str__(self):
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return self.headline
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class ImprovedArticle(models.Model):
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article = models.OneToOneField(Article, models.CASCADE)
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class ImprovedArticleWithParentLink(models.Model):
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article = models.OneToOneField(Article, models.CASCADE, parent_link=True)
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class BetterWriter(Writer):
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score = models.IntegerField()
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class Publication(models.Model):
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title = models.CharField(max_length=30)
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date_published = models.DateField()
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def __str__(self):
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return self.title
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def default_mode():
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return "di"
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def default_category():
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return 3
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class PublicationDefaults(models.Model):
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MODE_CHOICES = (("di", "direct"), ("de", "delayed"))
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CATEGORY_CHOICES = ((1, "Games"), (2, "Comics"), (3, "Novel"))
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title = models.CharField(max_length=30)
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date_published = models.DateField(default=datetime.date.today)
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datetime_published = models.DateTimeField(default=datetime.datetime(2000, 1, 1))
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mode = models.CharField(max_length=2, choices=MODE_CHOICES, default=default_mode)
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category = models.IntegerField(choices=CATEGORY_CHOICES, default=default_category)
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active = models.BooleanField(default=True)
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file = models.FileField(default="default.txt")
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class Author(models.Model):
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publication = models.OneToOneField(
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Publication, models.SET_NULL, null=True, blank=True
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)
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full_name = models.CharField(max_length=255)
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class Author1(models.Model):
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publication = models.OneToOneField(Publication, models.CASCADE, null=False)
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full_name = models.CharField(max_length=255)
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class WriterProfile(models.Model):
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writer = models.OneToOneField(Writer, models.CASCADE, primary_key=True)
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age = models.PositiveIntegerField()
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def __str__(self):
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return "%s is %s" % (self.writer, self.age)
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class Document(models.Model):
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myfile = models.FileField(storage=temp_storage, upload_to="unused", blank=True)
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class TextFile(models.Model):
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description = models.CharField(max_length=20)
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file = models.FileField(storage=temp_storage, upload_to="tests", max_length=15)
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def __str__(self):
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return self.description
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class CustomFileField(models.FileField):
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def save_form_data(self, instance, data):
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been_here = getattr(self, "been_saved", False)
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assert not been_here, "save_form_data called more than once"
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setattr(self, "been_saved", True)
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class CustomFF(models.Model):
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f = CustomFileField(upload_to="unused", blank=True)
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class FilePathModel(models.Model):
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path = models.FilePathField(
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path=os.path.dirname(__file__), match="models.py", blank=True
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)
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try:
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from PIL import Image # NOQA: detect if Pillow is installed
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test_images = True
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class ImageFile(models.Model):
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def custom_upload_path(self, filename):
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path = self.path or "tests"
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return "%s/%s" % (path, filename)
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description = models.CharField(max_length=20)
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# Deliberately put the image field *after* the width/height fields to
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# trigger the bug in #10404 with width/height not getting assigned.
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width = models.IntegerField(editable=False)
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height = models.IntegerField(editable=False)
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image = models.ImageField(
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storage=temp_storage,
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upload_to=custom_upload_path,
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width_field="width",
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height_field="height",
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)
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path = models.CharField(max_length=16, blank=True, default="")
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def __str__(self):
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return self.description
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class OptionalImageFile(models.Model):
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def custom_upload_path(self, filename):
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path = self.path or "tests"
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return "%s/%s" % (path, filename)
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description = models.CharField(max_length=20)
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image = models.ImageField(
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storage=temp_storage,
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upload_to=custom_upload_path,
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width_field="width",
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height_field="height",
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blank=True,
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null=True,
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)
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width = models.IntegerField(editable=False, null=True)
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height = models.IntegerField(editable=False, null=True)
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path = models.CharField(max_length=16, blank=True, default="")
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def __str__(self):
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return self.description
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class NoExtensionImageFile(models.Model):
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def upload_to(self, filename):
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return "tests/no_extension"
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description = models.CharField(max_length=20)
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image = models.ImageField(storage=temp_storage, upload_to=upload_to)
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def __str__(self):
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return self.description
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except ImportError:
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test_images = False
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class Homepage(models.Model):
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url = models.URLField()
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class Product(models.Model):
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slug = models.SlugField(unique=True)
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def __str__(self):
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return self.slug
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class Price(models.Model):
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price = models.DecimalField(max_digits=10, decimal_places=2)
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quantity = models.PositiveIntegerField()
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class Meta:
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unique_together = (("price", "quantity"),)
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def __str__(self):
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return "%s for %s" % (self.quantity, self.price)
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class Triple(models.Model):
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left = models.IntegerField()
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middle = models.IntegerField()
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right = models.IntegerField()
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class Meta:
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unique_together = (("left", "middle"), ("middle", "right"))
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class ArticleStatus(models.Model):
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ARTICLE_STATUS_CHAR = (
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("d", "Draft"),
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("p", "Pending"),
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("l", "Live"),
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)
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status = models.CharField(
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max_length=2, choices=ARTICLE_STATUS_CHAR, blank=True, null=True
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)
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class Inventory(models.Model):
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barcode = models.PositiveIntegerField(unique=True)
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parent = models.ForeignKey(
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"self", models.SET_NULL, to_field="barcode", blank=True, null=True
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)
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name = models.CharField(blank=False, max_length=20)
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class Meta:
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ordering = ("name",)
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def __str__(self):
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return self.name
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def __repr__(self):
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return self.__str__()
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class Book(models.Model):
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title = models.CharField(max_length=40)
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author = models.ForeignKey(Writer, models.SET_NULL, blank=True, null=True)
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special_id = models.IntegerField(blank=True, null=True, unique=True)
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class Meta:
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unique_together = ("title", "author")
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class BookXtra(models.Model):
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isbn = models.CharField(max_length=16, unique=True)
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suffix1 = models.IntegerField(blank=True, default=0)
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suffix2 = models.IntegerField(blank=True, default=0)
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class Meta:
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unique_together = ("suffix1", "suffix2")
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abstract = True
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class DerivedBook(Book, BookXtra):
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pass
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class ExplicitPK(models.Model):
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key = models.CharField(max_length=20, primary_key=True)
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desc = models.CharField(max_length=20, blank=True, unique=True)
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class Meta:
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unique_together = ("key", "desc")
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def __str__(self):
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return self.key
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class Post(models.Model):
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title = models.CharField(max_length=50, unique_for_date="posted", blank=True)
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slug = models.CharField(max_length=50, unique_for_year="posted", blank=True)
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subtitle = models.CharField(max_length=50, unique_for_month="posted", blank=True)
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posted = models.DateField()
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def __str__(self):
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return self.title
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class DateTimePost(models.Model):
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title = models.CharField(max_length=50, unique_for_date="posted", blank=True)
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slug = models.CharField(max_length=50, unique_for_year="posted", blank=True)
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subtitle = models.CharField(max_length=50, unique_for_month="posted", blank=True)
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posted = models.DateTimeField(editable=False)
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def __str__(self):
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return self.title
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class DerivedPost(Post):
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pass
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class BigInt(models.Model):
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biggie = models.BigIntegerField()
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def __str__(self):
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return str(self.biggie)
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class MarkupField(models.CharField):
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def __init__(self, *args, **kwargs):
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kwargs["max_length"] = 20
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super().__init__(*args, **kwargs)
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def formfield(self, **kwargs):
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# don't allow this field to be used in form (real use-case might be
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# that you know the markup will always be X, but it is among an app
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# that allows the user to say it could be something else)
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# regressed at r10062
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return None
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class CustomFieldForExclusionModel(models.Model):
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name = models.CharField(max_length=10)
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markup = MarkupField()
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class FlexibleDatePost(models.Model):
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title = models.CharField(max_length=50, unique_for_date="posted", blank=True)
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slug = models.CharField(max_length=50, unique_for_year="posted", blank=True)
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subtitle = models.CharField(max_length=50, unique_for_month="posted", blank=True)
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posted = models.DateField(blank=True, null=True)
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class Color(models.Model):
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name = models.CharField(max_length=50)
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def __iter__(self):
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yield from range(5)
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def __str__(self):
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return self.name
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class ColorfulItem(models.Model):
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name = models.CharField(max_length=50)
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colors = models.ManyToManyField(Color)
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class CustomErrorMessage(models.Model):
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name1 = models.CharField(
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max_length=50,
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validators=[validators.validate_slug],
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error_messages={"invalid": "Model custom error message."},
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)
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name2 = models.CharField(
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max_length=50,
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validators=[validators.validate_slug],
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error_messages={"invalid": "Model custom error message."},
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)
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def clean(self):
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if self.name1 == "FORBIDDEN_VALUE":
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raise ValidationError(
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{"name1": [ValidationError("Model.clean() error messages.")]}
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)
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elif self.name1 == "FORBIDDEN_VALUE2":
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raise ValidationError(
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{"name1": "Model.clean() error messages (simpler syntax)."}
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)
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elif self.name1 == "GLOBAL_ERROR":
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raise ValidationError("Global error message.")
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def today_callable_dict():
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return {"last_action__gte": datetime.datetime.today()}
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def today_callable_q():
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return models.Q(last_action__gte=datetime.datetime.today())
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class Character(models.Model):
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username = models.CharField(max_length=100)
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last_action = models.DateTimeField()
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def __str__(self):
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return self.username
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class StumpJoke(models.Model):
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most_recently_fooled = models.ForeignKey(
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Character,
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models.CASCADE,
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limit_choices_to=today_callable_dict,
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related_name="jokes",
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)
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has_fooled_today = models.ManyToManyField(
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Character,
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limit_choices_to=today_callable_q,
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related_name="jokes_today",
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)
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funny = models.BooleanField(default=False)
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# Model for #13776
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class Student(models.Model):
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character = models.ForeignKey(Character, models.CASCADE)
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study = models.CharField(max_length=30)
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# Model for #639
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class Photo(models.Model):
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title = models.CharField(max_length=30)
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image = models.FileField(storage=temp_storage, upload_to="tests")
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# Support code for the tests; this keeps track of how many times save()
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# gets called on each instance.
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self._savecount = 0
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def save(self, force_insert=False, force_update=False):
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super().save(force_insert=force_insert, force_update=force_update)
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self._savecount += 1
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class UUIDPK(models.Model):
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uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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name = models.CharField(max_length=30)
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# Models for #24706
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class StrictAssignmentFieldSpecific(models.Model):
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title = models.CharField(max_length=30)
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_should_error = False
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def __setattr__(self, key, value):
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if self._should_error is True:
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raise ValidationError(message={key: "Cannot set attribute"}, code="invalid")
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super().__setattr__(key, value)
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class StrictAssignmentAll(models.Model):
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title = models.CharField(max_length=30)
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_should_error = False
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def __setattr__(self, key, value):
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if self._should_error is True:
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raise ValidationError(message="Cannot set attribute", code="invalid")
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super().__setattr__(key, value)
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# A model with ForeignKey(blank=False, null=True)
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class Award(models.Model):
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name = models.CharField(max_length=30)
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character = models.ForeignKey(Character, models.SET_NULL, blank=False, null=True)
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class NullableUniqueCharFieldModel(models.Model):
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codename = models.CharField(max_length=50, blank=True, null=True, unique=True)
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email = models.EmailField(blank=True, null=True)
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slug = models.SlugField(blank=True, null=True)
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url = models.URLField(blank=True, null=True)
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class Number(models.Model):
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value = models.IntegerField()
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class NumbersToDice(models.Model):
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number = models.ForeignKey("Number", on_delete=models.CASCADE)
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die = models.ForeignKey("Dice", on_delete=models.CASCADE)
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class Dice(models.Model):
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numbers = models.ManyToManyField(
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Number,
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through=NumbersToDice,
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limit_choices_to=models.Q(value__gte=1),
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)
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class ConstraintsModel(models.Model):
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name = models.CharField(max_length=100)
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category = models.CharField(max_length=50, default="uncategorized")
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price = models.DecimalField(max_digits=10, decimal_places=2, default=0)
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class Meta:
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required_db_features = {"supports_table_check_constraints"}
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constraints = [
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models.UniqueConstraint(
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"name",
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"category",
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name="unique_name_category",
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violation_error_message="This product already exists.",
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),
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models.CheckConstraint(
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condition=models.Q(price__gt=0),
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name="price_gte_zero",
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violation_error_message="Price must be greater than zero.",
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),
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]
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