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77 lines
2.3 KiB
Python
77 lines
2.3 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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)
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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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)
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shelf = fields.ForeignKey(
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"Shelf", on_delete=models.PROTECT, activitypub_field="target"
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)
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user = fields.ForeignKey(
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"User", on_delete=models.PROTECT, activitypub_field="actor"
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)
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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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