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from __future__ import unicode_literals
from django.contrib.auth.models import User
from django.contrib.contenttypes.fields import (
GenericForeignKey, GenericRelation,
)
from django.contrib.contenttypes.models import ContentType
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
@python_2_unicode_compatible
class Book(models.Model):
title = models.CharField(max_length=50)
year = models.PositiveIntegerField(null=True, blank=True)
author = models.ForeignKey(
User,
models.SET_NULL,
verbose_name="Verbose Author",
related_name='books_authored',
blank=True, null=True,
)
contributors = models.ManyToManyField(
User,
verbose_name="Verbose Contributors",
related_name='books_contributed',
blank=True,
)
is_best_seller = models.NullBooleanField(default=0)
date_registered = models.DateField(null=True)
# This field name is intentionally 2 characters long (#16080).
no = models.IntegerField(verbose_name='number', blank=True, null=True)
def __str__(self):
return self.title
@python_2_unicode_compatible
class Department(models.Model):
code = models.CharField(max_length=4, unique=True)
description = models.CharField(max_length=50, blank=True, null=True)
def __str__(self):
return self.description
@python_2_unicode_compatible
class Employee(models.Model):
department = models.ForeignKey(Department, models.CASCADE, to_field="code")
name = models.CharField(max_length=100)
def __str__(self):
return self.name
@python_2_unicode_compatible
class TaggedItem(models.Model):
tag = models.SlugField()
content_type = models.ForeignKey(ContentType, models.CASCADE, related_name='tagged_items')
object_id = models.PositiveIntegerField()
content_object = GenericForeignKey('content_type', 'object_id')
def __str__(self):
return self.tag
@python_2_unicode_compatible
class Bookmark(models.Model):
url = models.URLField()
tags = GenericRelation(TaggedItem)
def __str__(self):
return self.url
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