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