Improve sorting

ram/metadata/migrations/0018_alter_decoder_options_alter_scale_options_and_more.py

@@ -0,0 +1,69 @@
+# Generated by Django 5.1.2 on 2024-11-04 21:17
+
+import django.db.migrations.operations.special
+import metadata.models
+from django.db import migrations, models
+
+
+def gen_ratio(apps, schema_editor):
+    Scale = apps.get_model('metadata', 'Scale')
+    for row in Scale.objects.all():
+        row.ratio_int = metadata.models.calculate_ratio(row.ratio)
+        row.save(update_fields=['ratio_int'])
+
+
+def convert_tarcks(apps, schema_editor):
+    Scale = apps.get_model("metadata", "Scale")
+    for row in Scale.objects.all():
+        row.tracks = "".join(
+            filter(
+                lambda x: str.isdigit(x) or x == "." or x == ",",
+                row.tracks
+            )
+        )
+        row.save(update_fields=["tracks"])
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('metadata', '0017_alter_property_private'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='decoder',
+            options={'ordering': ['manufacturer__name', 'name']},
+        ),
+        migrations.AlterModelOptions(
+            name='scale',
+            options={'ordering': ['ratio_int', 'scale']},
+        ),
+        migrations.AddField(
+            model_name='scale',
+            name='ratio_int',
+            field=models.SmallIntegerField(default=0, editable=False),
+        ),
+        migrations.RunPython(
+            code=gen_ratio,
+            reverse_code=django.db.migrations.operations.special.RunPython.noop,
+        ),
+        migrations.AlterField(
+            model_name='scale',
+            name='ratio',
+            field=models.CharField(max_length=16, validators=[metadata.models.calculate_ratio]),
+        ),
+        migrations.AlterModelOptions(
+            name='scale',
+            options={'ordering': ['-ratio_int', '-tracks', 'scale']},
+        ),
+        migrations.RunPython(
+            code=convert_tarcks,
+            reverse_code=django.db.migrations.operations.special.RunPython.noop,
+        ),
+        migrations.AlterField(
+            model_name='scale',
+            name='tracks',
+            field=models.FloatField(help_text='Distance between model tracks in mm'),
+        ),
+    ]