Refactor model imports and update admin classes to use pghistory for historical tracking; replace HistoricalModel with TrackedModel in relevant models

designers/admin.py

@@ -1,10 +1,13 @@
 from django.contrib import admin
-from simple_history.admin import SimpleHistoryAdmin
+from django.utils.text import slugify
 from .models import Designer
 
 @admin.register(Designer)
-class DesignerAdmin(SimpleHistoryAdmin):
+class DesignerAdmin(admin.ModelAdmin):
     list_display = ('name', 'headquarters', 'founded_date', 'website')
     search_fields = ('name', 'headquarters')
-    list_filter = ('founded_date',)
     prepopulated_fields = {'slug': ('name',)}
+    readonly_fields = ('created_at', 'updated_at')
+
+    def get_queryset(self, request):
+        return super().get_queryset(request).select_related()

designers/migrations/0002_designerevent_remove_historicaldesigner_history_user_and_more.py

@@ -0,0 +1,99 @@
+# Generated by Django 5.1.4 on 2025-02-09 15:24
+
+import django.db.models.deletion
+import pgtrigger.compiler
+import pgtrigger.migrations
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("designers", "0001_initial"),
+        ("pghistory", "0006_delete_aggregateevent"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="DesignerEvent",
+            fields=[
+                ("pgh_id", models.AutoField(primary_key=True, serialize=False)),
+                ("pgh_created_at", models.DateTimeField(auto_now_add=True)),
+                ("pgh_label", models.TextField(help_text="The event label.")),
+                ("id", models.BigIntegerField()),
+                ("name", models.CharField(max_length=255)),
+                ("slug", models.SlugField(db_index=False, max_length=255)),
+                ("description", models.TextField(blank=True)),
+                ("website", models.URLField(blank=True)),
+                ("founded_date", models.DateField(blank=True, null=True)),
+                ("headquarters", models.CharField(blank=True, max_length=255)),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+            ],
+            options={
+                "abstract": False,
+            },
+        ),
+        migrations.RemoveField(
+            model_name="historicaldesigner",
+            name="history_user",
+        ),
+        migrations.AlterField(
+            model_name="designer",
+            name="id",
+            field=models.BigAutoField(primary_key=True, serialize=False),
+        ),
+        pgtrigger.migrations.AddTrigger(
+            model_name="designer",
+            trigger=pgtrigger.compiler.Trigger(
+                name="insert_insert",
+                sql=pgtrigger.compiler.UpsertTriggerSql(
+                    func='INSERT INTO "designers_designerevent" ("created_at", "description", "founded_date", "headquarters", "id", "name", "pgh_context_id", "pgh_created_at", "pgh_label", "pgh_obj_id", "slug", "updated_at", "website") VALUES (NEW."created_at", NEW."description", NEW."founded_date", NEW."headquarters", NEW."id", NEW."name", _pgh_attach_context(), NOW(), \'insert\', NEW."id", NEW."slug", NEW."updated_at", NEW."website"); RETURN NULL;',
+                    hash="[AWS-SECRET-REMOVED]",
+                    operation="INSERT",
+                    pgid="pgtrigger_insert_insert_9be65",
+                    table="designers_designer",
+                    when="AFTER",
+                ),
+            ),
+        ),
+        pgtrigger.migrations.AddTrigger(
+            model_name="designer",
+            trigger=pgtrigger.compiler.Trigger(
+                name="update_update",
+                sql=pgtrigger.compiler.UpsertTriggerSql(
+                    condition="WHEN (OLD.* IS DISTINCT FROM NEW.*)",
+                    func='INSERT INTO "designers_designerevent" ("created_at", "description", "founded_date", "headquarters", "id", "name", "pgh_context_id", "pgh_created_at", "pgh_label", "pgh_obj_id", "slug", "updated_at", "website") VALUES (NEW."created_at", NEW."description", NEW."founded_date", NEW."headquarters", NEW."id", NEW."name", _pgh_attach_context(), NOW(), \'update\', NEW."id", NEW."slug", NEW."updated_at", NEW."website"); RETURN NULL;',
+                    hash="[AWS-SECRET-REMOVED]",
+                    operation="UPDATE",
+                    pgid="pgtrigger_update_update_b5f91",
+                    table="designers_designer",
+                    when="AFTER",
+                ),
+            ),
+        ),
+        migrations.AddField(
+            model_name="designerevent",
+            name="pgh_context",
+            field=models.ForeignKey(
+                db_constraint=False,
+                null=True,
+                on_delete=django.db.models.deletion.DO_NOTHING,
+                related_name="+",
+                to="pghistory.context",
+            ),
+        ),
+        migrations.AddField(
+            model_name="designerevent",
+            name="pgh_obj",
+            field=models.ForeignKey(
+                db_constraint=False,
+                on_delete=django.db.models.deletion.DO_NOTHING,
+                related_name="events",
+                to="designers.designer",
+            ),
+        ),
+        migrations.DeleteModel(
+            name="HistoricalDesigner",
+        ),
+    ]

designers/models.py

@@ -1,8 +1,10 @@
 from django.db import models
 from django.utils.text import slugify
-from simple_history.models import HistoricalRecords
+from history_tracking.models import TrackedModel
+import pghistory
 
-class Designer(models.Model):
+@pghistory.track()
+class Designer(TrackedModel):
     name = models.CharField(max_length=255)
     slug = models.SlugField(max_length=255, unique=True)
     description = models.TextField(blank=True)
@@ -11,7 +13,6 @@ class Designer(models.Model):
     headquarters = models.CharField(max_length=255, blank=True)
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
-    history = HistoricalRecords()
 
     class Meta:
         ordering = ['name']
@@ -30,8 +31,13 @@ class Designer(models.Model):
         try:
             return cls.objects.get(slug=slug), False
         except cls.DoesNotExist:
-            # Check historical slugs
-            history = cls.history.filter(slug=slug).order_by('-history_date').first()
+            # Check historical slugs using pghistory
+            history_model = cls.get_history_model()
+            history = (
+                history_model.objects.filter(slug=slug)
+                .order_by('-pgh_created_at')
+                .first()
+            )
             if history:
-                return cls.objects.get(id=history.id), True
+                return cls.objects.get(id=history.pgh_obj_id), True
             raise cls.DoesNotExist("No designer found with this slug")