moviewyrm/bookwyrm/models/shelf.py
2021-02-07 11:29:13 -08:00

69 lines
2.2 KiB
Python

''' puttin' books on shelves '''
import re
from django.db import models
from bookwyrm import activitypub
from .activitypub_mixin import CollectionItemMixin, OrderedCollectionMixin
from .base_model import BookWyrmModel
from . import fields
class Shelf(OrderedCollectionMixin, BookWyrmModel):
''' a list of books owned by a user '''
name = fields.CharField(max_length=100)
identifier = models.CharField(max_length=100)
user = fields.ForeignKey(
'User', on_delete=models.PROTECT, activitypub_field='owner')
editable = models.BooleanField(default=True)
privacy = fields.PrivacyField()
books = models.ManyToManyField(
'Edition',
symmetrical=False,
through='ShelfBook',
through_fields=('shelf', 'book')
)
activity_serializer = activitypub.Shelf
def save(self, *args, **kwargs):
''' set the identifier '''
super().save(*args, **kwargs)
if not self.identifier:
slug = re.sub(r'[^\w]', '', self.name).lower()
self.identifier = '%s-%d' % (slug, self.id)
super().save(*args, **kwargs)
@property
def collection_queryset(self):
''' list of books for this shelf, overrides OrderedCollectionMixin '''
return self.books.all().order_by('shelfbook')
def get_remote_id(self):
''' shelf identifier instead of id '''
base_path = self.user.remote_id
return '%s/shelf/%s' % (base_path, self.identifier)
class Meta:
''' user/shelf unqiueness '''
unique_together = ('user', 'identifier')
class ShelfBook(CollectionItemMixin, BookWyrmModel):
''' many to many join table for books and shelves '''
book = fields.ForeignKey(
'Edition', on_delete=models.PROTECT, activitypub_field='object')
shelf = fields.ForeignKey(
'Shelf', on_delete=models.PROTECT, activitypub_field='target')
user = fields.ForeignKey(
'User', on_delete=models.PROTECT, activitypub_field='actor')
activity_serializer = activitypub.AddBook
object_field = 'book'
collection_field = 'shelf'
class Meta:
''' an opinionated constraint!
you can't put a book on shelf twice '''
unique_together = ('book', 'shelf')
ordering = ('-created_date',)