Add shop field (from properties) (#48)

* Add shop field (from properties)

* Update template

ram/bookshelf/migrations/0022_basebook_shop.py

@@ -0,0 +1,46 @@
+# Generated by Django 5.1.4 on 2025-01-26 14:32
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+def shop_from_property(apps, schema_editor):
+    basebook = apps.get_model("bookshelf", "BaseBook")
+    shop_model = apps.get_model("metadata", "Shop")
+    for row in basebook.objects.all():
+        property = row.property.filter(
+            property__name__icontains="shop"
+        ).first()
+        if property:
+            shop, created = shop_model.objects.get_or_create(
+                name=property.value,
+                defaults={"on_line": False}
+            )
+
+            row.shop = shop
+            row.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("bookshelf", "0021_basebookdocument_creation_time_and_more"),
+        ("metadata", "0023_shop"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="basebook",
+            name="shop",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                to="metadata.shop",
+            ),
+        ),
+        migrations.RunPython(
+            shop_from_property,
+            reverse_code=migrations.RunPython.noop
+        ),
+    ]