bookwyrm/fedireads/models/shelf.py

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''' puttin' books on shelves '''
from django.db import models
from fedireads.utils.models import FedireadsModel
class Shelf(FedireadsModel):
name = models.CharField(max_length=100)
identifier = models.CharField(max_length=100)
user = models.ForeignKey('User', on_delete=models.PROTECT)
editable = models.BooleanField(default=True)
books = models.ManyToManyField(
'Edition',
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symmetrical=False,
through='ShelfBook',
through_fields=('shelf', 'book')
)
@property
def absolute_id(self):
''' use shelf identifier as absolute id '''
base_path = self.user.absolute_id
model_name = type(self).__name__.lower()
return '%s/%s/%s' % (base_path, model_name, self.identifier)
class Meta:
unique_together = ('user', 'identifier')
class ShelfBook(FedireadsModel):
# many to many join table for books and shelves
book = models.ForeignKey('Edition', on_delete=models.PROTECT)
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shelf = models.ForeignKey('Shelf', on_delete=models.PROTECT)
added_by = models.ForeignKey(
'User',
blank=True,
null=True,
on_delete=models.PROTECT
)
class Meta:
unique_together = ('book', 'shelf')