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from django.contrib.contenttypes.fields import (
GenericForeignKey, GenericRelation
)
from django.contrib.contenttypes.models import ContentType
from django.db import models
class Tag(models.Model):
"""
Tags have a descriptive slug, and are attached to an arbitrary object.
"""
tag = models.SlugField()
content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
object_id = models.PositiveIntegerField()
tagged_item = GenericForeignKey('content_type', 'object_id')
def __str__(self):
return self.tag
class Bookmark(models.Model):
"""
A URL bookmark that may have multiple tags attached.
"""
url = models.URLField()
tags = GenericRelation(Tag)
def __str__(self):
return 'Bookmark: %s' % self.url
class Note(models.Model):
"""
A textual note that may have multiple tags attached.
"""
text = models.TextField()
tags = GenericRelation(Tag)
def __str__(self):
return 'Note: %s' % self.text
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