Store book data

fedireads/models/shelf.py

@@ -0,0 +1,42 @@
+''' 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(
+        'Book',
+        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('Book', on_delete=models.PROTECT)
+    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')