fix in librarian

[wolnelektury.git] / apps / catalogue / migrations / 0002_book_ancestor.py

diff --git a/apps/catalogue/migrations/0002_book_ancestor.py b/apps/catalogue/migrations/0002_book_ancestor.py
index 4aa5828..9f304c3 100644 (file)
--- a/apps/catalogue/migrations/0002_book_ancestor.py
+++ b/apps/catalogue/migrations/0002_book_ancestor.py
@@ -4,44 +4,6 @@ from __future__ import unicode_literals
 from django.db import models, migrations
 
 
-def fix_tree_tags(apps, schema_editor):
-    """Fixes the ancestry cache."""
-    # TODO: table names
-    from django.db import connection, transaction
-    if connection.vendor == 'postgres':
-        cursor = connection.cursor()
-        cursor.execute("""
-            WITH RECURSIVE ancestry AS (
-                SELECT book.id, book.parent_id
-                FROM catalogue_book AS book
-                WHERE book.parent_id IS NOT NULL
-                UNION
-                SELECT ancestor.id, book.parent_id
-                FROM ancestry AS ancestor, catalogue_book AS book
-                WHERE ancestor.parent_id = book.id
-                    AND book.parent_id IS NOT NULL
-                )
-            INSERT INTO catalogue_book_ancestor
-                (from_book_id, to_book_id)
-                SELECT id, parent_id
-                FROM ancestry
-                ORDER BY id;
-            """)
-    else:
-        Book = apps.get_model("catalogue", "Book")
-        for b in Book.objects.exclude(parent=None):
-            parent = b.parent
-            while parent is not None:
-                b.ancestor.add(parent)
-                parent = parent.parent
-
-
-def remove_book_tags(apps, schema_editor):
-    Tag = apps.get_model("catalogue", "Tag")
-    Book = apps.get_model("catalogue", "Book")
-    Tag.objects.filter(category='book').delete()
-
-
 class Migration(migrations.Migration):
 
     dependencies = [
@@ -55,26 +17,4 @@ class Migration(migrations.Migration):
             field=models.ManyToManyField(related_name=b'descendant', null=True, editable=False, to='catalogue.Book', blank=True),
             preserve_default=True,
         ),
-
-        migrations.RunPython(fix_tree_tags),
-        migrations.RunPython(remove_book_tags),
-
-        migrations.AlterField(
-            model_name='tag',
-            name='category',
-            field=models.CharField(db_index=True, max_length=50, verbose_name='Category', choices=[(b'author', 'author'), (b'epoch', 'period'), (b'kind', 'form'), (b'genre', 'genre'), (b'theme', 'motif'), (b'set', 'set'), (b'thing', 'thing')]),
-        ),
-
-        migrations.RemoveField(
-            model_name='tag',
-            name='book_count',
-        ),
-        migrations.RemoveField(
-            model_name='tag',
-            name='picture_count',
-        ),
-        migrations.RemoveField(
-            model_name='book',
-            name='_related_info',
-        ),
     ]