584 sorting of lists

bookwyrm/migrations/0067_denullify_list_item_order.py

@@ -0,0 +1,30 @@
+from django.db import migrations
+
+
+def forwards_func(apps, schema_editor):
+    # Set all values for ListItem.order
+    BookList = apps.get_model("bookwyrm", "List")
+    db_alias = schema_editor.connection.alias
+    for book_list in BookList.objects.using(db_alias).all():
+        for i, item in enumerate(book_list.listitem_set.order_by("id"), 1):
+            item.order = i
+            item.save()
+
+
+def reverse_func(apps, schema_editor):
+    # null all values for ListItem.order
+    BookList = apps.get_model("bookwyrm", "List")
+    db_alias = schema_editor.connection.alias
+    for book_list in BookList.objects.using(db_alias).all():
+        for item in book_list.listitem_set.order_by("id"):
+            item.order = None
+            item.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("bookwyrm", "0066_user_deactivation_reason"),
+    ]
+
+    operations = [migrations.RunPython(forwards_func, reverse_func)]

bookwyrm/migrations/0068_ordering_for_list_items.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.1.6 on 2021-04-08 16:15
+
+import bookwyrm.models.fields
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("bookwyrm", "0067_denullify_list_item_order"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="listitem",
+            name="order",
+            field=bookwyrm.models.fields.IntegerField(),
+        ),
+        migrations.AlterUniqueTogether(
+            name="listitem",
+            unique_together={("order", "book_list"), ("book", "book_list")},
+        ),
+    ]