Add history to Account model.

Fixes #29

journal/accounts/admin.py

@@ -1,6 +1,12 @@
 from django.contrib import admin
 from django.contrib.auth.admin import UserAdmin
+from simple_history.admin import SimpleHistoryAdmin
 
-from .models import User
+from .models import Account, User
 
 admin.site.register(User, UserAdmin)
+
+
+@admin.register(Account)
+class AccountAdmin(SimpleHistoryAdmin):
+    pass

journal/accounts/migrations/0003_historicalaccount.py

@@ -0,0 +1,77 @@
+# Generated by Django 4.2.1 on 2023-08-03 01:36
+
+import django.db.models.deletion
+import simple_history.models
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("accounts", "0002_account"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="HistoricalAccount",
+            fields=[
+                (
+                    "id",
+                    models.BigIntegerField(
+                        auto_created=True, blank=True, db_index=True, verbose_name="ID"
+                    ),
+                ),
+                (
+                    "status",
+                    models.IntegerField(
+                        choices=[
+                            (1, "Trialing"),
+                            (2, "Active"),
+                            (3, "Exempt"),
+                            (4, "Canceled"),
+                            (5, "Trial Expired"),
+                        ],
+                        db_index=True,
+                        default=1,
+                    ),
+                ),
+                ("history_id", models.AutoField(primary_key=True, serialize=False)),
+                ("history_date", models.DateTimeField(db_index=True)),
+                ("history_change_reason", models.CharField(max_length=100, null=True)),
+                (
+                    "history_type",
+                    models.CharField(
+                        choices=[("+", "Created"), ("~", "Changed"), ("-", "Deleted")],
+                        max_length=1,
+                    ),
+                ),
+                (
+                    "history_user",
+                    models.ForeignKey(
+                        null=True,
+                        on_delete=django.db.models.deletion.SET_NULL,
+                        related_name="+",
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+                (
+                    "user",
+                    models.ForeignKey(
+                        blank=True,
+                        db_constraint=False,
+                        null=True,
+                        on_delete=django.db.models.deletion.DO_NOTHING,
+                        related_name="+",
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "historical account",
+                "verbose_name_plural": "historical accounts",
+                "ordering": ("-history_date", "-history_id"),
+                "get_latest_by": ("history_date", "history_id"),
+            },
+            bases=(simple_history.models.HistoricalChanges, models.Model),
+        ),
+    ]

journal/accounts/models.py

@@ -2,6 +2,7 @@
 from django.db import models
 from django.db.models.signals import post_save
 from django.dispatch import receiver
+from simple_history.models import HistoricalRecords
 
 
 class AccountManager(models.Manager):
@@ -34,6 +35,7 @@ class Status(models.IntegerChoices):
     )
 
     objects = AccountManager()
+    history = HistoricalRecords()
 
 
 class User(AbstractUser):

project/settings.py

@@ -37,6 +37,7 @@
     # Needed by default templates even though we're not using a social provider.
     "allauth.socialaccount",
     "django_extensions",
+    "simple_history",
     "journal.accounts",
     "journal.core",
     "journal.entries",

requirements.in

@@ -2,5 +2,6 @@ Django==4.2.1
 django-allauth==0.54.0
 django-environ==0.10.0
 django-extensions==3.2.3
+django-simple-history==3.3.0
 gunicorn==20.1.0
 sentry-sdk==1.28.1

requirements.txt

@@ -29,6 +29,8 @@ django-environ==0.10.0
     # via -r requirements.in
 django-extensions==3.2.3
     # via -r requirements.in
+django-simple-history==3.3.0
+    # via -r requirements.in
 gunicorn==20.1.0
     # via -r requirements.in
 idna==3.4