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from django import forms
from django.db import models
from django.utils.translation import gettext_lazy as _
REGULAR = 0
MANAGER = 1
ADMIN = 2
STATUS_CHOICES = (
(REGULAR, "Regular"),
(MANAGER, "Manager"),
(ADMIN, "Admin"),
)
# classes for testing filters with inherited fields
class SubCharField(models.CharField):
pass
class SubSubCharField(SubCharField):
pass
class SubnetMaskField(models.Field):
empty_strings_allowed = False
description = "Subnet Mask"
def __init__(self, *args, **kwargs):
kwargs["max_length"] = 15
models.Field.__init__(self, *args, **kwargs)
def get_internal_type(self):
return "GenericIPAddressField"
def formfield(self, **kwargs):
defaults = {"form_class": forms.GenericIPAddressField}
defaults.update(kwargs)
return super().formfield(**defaults)
class User(models.Model):
username = models.CharField(_("username"), max_length=255)
first_name = SubCharField(max_length=100)
last_name = SubSubCharField(max_length=100)
status = models.IntegerField(choices=STATUS_CHOICES, default=0)
is_active = models.BooleanField(default=False)
is_employed = models.BooleanField(null=True, default=False)
favorite_books = models.ManyToManyField("Book", related_name="lovers")
def __str__(self):
return self.username
class ManagerGroup(models.Model):
users = models.ManyToManyField(
User, limit_choices_to={"is_active": True}, related_name="member_of"
)
manager = models.ForeignKey(
User,
limit_choices_to=lambda: {"status": MANAGER},
related_name="manager_of",
on_delete=models.CASCADE,
)
def __str__(self):
return self.manager.name + " group"
class AdminUser(User):
class Meta:
proxy = True
def __str__(self):
return "%s (ADMIN)" % self.username
class Comment(models.Model):
text = models.TextField()
author = models.ForeignKey(User, related_name="comments", on_delete=models.CASCADE)
date = models.DateField()
time = models.TimeField()
def __str__(self):
return "%s said %s" % (self.author, self.text[:25])
class Article(models.Model):
name = models.CharField(verbose_name="title", max_length=200, blank=True)
published = models.DateTimeField()
author = models.ForeignKey(User, null=True, on_delete=models.CASCADE)
def __str__(self):
if self.author_id:
return "%s on %s" % (self.author, self.published)
return "Anonymous on %s" % self.published
class Book(models.Model):
title = models.CharField(max_length=100)
price = models.DecimalField(max_digits=6, decimal_places=2)
average_rating = models.FloatField()
def __str__(self):
return self.title
class Place(models.Model):
name = models.CharField(max_length=100)
class Meta:
abstract = True
class Restaurant(Place):
serves_pizza = models.BooleanField(default=False)
class NetworkSetting(models.Model):
ip = models.GenericIPAddressField()
mask = SubnetMaskField()
cidr = models.CharField(max_length=18, blank=True, verbose_name="CIDR")
class Company(models.Model):
name = models.CharField(max_length=100)
def __str__(self):
return self.name
class Meta:
ordering = ["name"]
class Location(models.Model):
company = models.ForeignKey(
Company, related_name="locations", on_delete=models.CASCADE
)
name = models.CharField(max_length=100)
zip_code = models.CharField(max_length=10)
open_days = models.CharField(max_length=7)
def __str__(self):
return "%s: %s" % (self.company.name, self.name)
class Account(models.Model):
name = models.CharField(max_length=100)
in_good_standing = models.BooleanField(default=False)
friendly = models.BooleanField(default=False)
class Profile(models.Model):
account = models.OneToOneField(
Account, related_name="profile", on_delete=models.CASCADE
)
likes_coffee = models.BooleanField(default=False)
likes_tea = models.BooleanField(default=False)
class BankAccount(Account):
amount_saved = models.IntegerField(default=0)
class Node(models.Model):
name = models.CharField(max_length=20)
adjacents = models.ManyToManyField("self")
class DirectedNode(models.Model):
name = models.CharField(max_length=20)
outbound_nodes = models.ManyToManyField(
"self", symmetrical=False, related_name="inbound_nodes"
)
class Worker(models.Model):
name = models.CharField(max_length=100)
class HiredWorker(models.Model):
salary = models.IntegerField()
hired_on = models.DateField()
worker = models.ForeignKey(Worker, on_delete=models.CASCADE)
business = models.ForeignKey("Business", on_delete=models.CASCADE)
class Business(models.Model):
name = models.CharField(max_length=100)
employees = models.ManyToManyField(
Worker, through=HiredWorker, related_name="employers"
)
class UUIDTestModel(models.Model):
uuid = models.UUIDField()
class SpacewalkRecord(models.Model):
"""Cumulative space walk record.
See: https://en.wikipedia.org/wiki/List_of_cumulative_spacewalk_records
"""
astronaut = models.CharField(max_length=100)
duration = models.DurationField()
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