add icon field to platform, use everywhere

games/migrations/0037_platform_icon.py

@@ -0,0 +1,26 @@
+# Generated by Django 5.1.1 on 2024-09-14 07:05
+
+from django.db import migrations, models
+from django.utils.text import slugify
+
+
+def update_empty_icons(apps, schema_editor):
+    Platform = apps.get_model("games", "Platform")
+    for platform in Platform.objects.filter(icon=""):
+        platform.icon = slugify(platform.name)
+        platform.save()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("games", "0036_alter_edition_platform"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="platform",
+            name="icon",
+            field=models.SlugField(blank=True),
+        ),
+        migrations.RunPython(update_empty_icons),
+    ]