new action field as foreign key

triggers/admin.py

@@ -46,6 +46,7 @@ class ConditionInline(StackedPolymorphicInline):
 class ActionInline(StackedPolymorphicInline):
     model = Action
     child_inlines = generate_child_inlines(Action)
+    fk_name = "trigger"
 
 
 class EventInline(StackedPolymorphicInline):

triggers/migrations/0004_alter_action_trigger.py

@@ -4,16 +4,25 @@
 import django.db.models.deletion
 
 
+def save_action_triggers(apps, schema_editor):
+    Action = apps.get_model("triggers", "Action")
+    for action in Action.objects.all():
+        action.trigger_new_id = action.trigger_id
+        action.save()
+
+
 class Migration(migrations.Migration):
 
     dependencies = [
         ('triggers', '0003_event_delay'),
     ]
 
     operations = [
-        migrations.AlterField(
+        migrations.AddField(
             model_name='action',
-            name='trigger',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='actions', related_query_name='action', to='triggers.trigger', verbose_name='trigger'),
+            name='trigger_new',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='actions_new',
+                                    related_query_name='action_new', to='triggers.trigger', verbose_name='trigger'),
         ),
+        migrations.RunPython(save_action_triggers, reverse_code=migrations.RunPython.noop),
     ]

triggers/migrations/0005_alter_action_triggers.py

@@ -0,0 +1,44 @@
+# Generated by Django 3.2.20 on 2024-06-04 05:14
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+def save_action_triggers(apps, schema_editor):
+    Action = apps.get_model("triggers", "Action")
+    for action in Action.objects.all():
+        action.trigger_new_id = action.trigger_id
+        action.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('triggers', '0004_alter_action_trigger'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='action',
+            old_name='trigger',
+            new_name='trigger_old',
+        ),
+        migrations.RenameField(
+            model_name='action',
+            old_name='trigger_new',
+            new_name='trigger',
+        ),
+        migrations.AlterField(
+            model_name='action',
+            name='trigger',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='actions',
+                                    related_query_name='action', to='triggers.trigger', verbose_name='trigger'),
+        ),
+        migrations.AlterField(
+            model_name='action',
+            name='trigger_old',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE,
+                                    related_name='actions_old', related_query_name='action_old', to='triggers.trigger',
+                                    verbose_name='trigger obsolete'),
+        ),
+    ]

triggers/models.py

@@ -100,6 +100,16 @@ class Action(PolymorphicModel):
         related_name='actions',
         related_query_name='action',
         verbose_name=_('trigger'),
+        null=True
+    )
+    trigger_old = models.ForeignKey(
+        to=Trigger,
+        on_delete=models.CASCADE,
+        related_name='actions_old',
+        related_query_name='action_old',
+        verbose_name=_('trigger obsolete'),
+        null=True,
+        blank=True,
     )
 
     class Meta: