From 04fe33d64d2f4191a958de42729c2e69ce2faf5a Mon Sep 17 00:00:00 2001
From: Bartosz Dabrowski <bartosz.dabrowski@adverity.com>
Date: Mon, 19 Aug 2024 15:18:15 +0200
Subject: [PATCH 1/4] Fixed bug in checking the existence of custom __init__
 method in an object. The __init__ wasn't called previously.

---
 polymorphic/query.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/polymorphic/query.py b/polymorphic/query.py
index 8e93281a..7d8636d1 100644
--- a/polymorphic/query.py
+++ b/polymorphic/query.py
@@ -73,7 +73,7 @@ def transmogrify(cls, obj):
     """
     Upcast a class to a different type without asking questions.
     """
-    if "__init__" not in obj.__dict__:
+    if "__init__" not in obj.__class__.__dict__:
         # Just assign __class__ to a different value.
         new = obj
         new.__class__ = cls

From 978f9c701adc429947d99503c0057439b29b2aaf Mon Sep 17 00:00:00 2001
From: Bartosz Dabrowski <bartosz.dabrowski@adverity.com>
Date: Tue, 20 Aug 2024 14:11:11 +0200
Subject: [PATCH 2/4] Added unit-tests for #615

---
 ...eadduck_delete_inlinemodelbase_and_more.py | 36 +++++++++++++++++++
 polymorphic/tests/models.py                   | 25 +++++++++++++
 polymorphic/tests/test_query.py               | 12 +++++++
 3 files changed, 73 insertions(+)
 create mode 100644 polymorphic/tests/migrations/0002_blueheadduck_delete_inlinemodelbase_and_more.py
 create mode 100644 polymorphic/tests/test_query.py

diff --git a/polymorphic/tests/migrations/0002_blueheadduck_delete_inlinemodelbase_and_more.py b/polymorphic/tests/migrations/0002_blueheadduck_delete_inlinemodelbase_and_more.py
new file mode 100644
index 00000000..64f86279
--- /dev/null
+++ b/polymorphic/tests/migrations/0002_blueheadduck_delete_inlinemodelbase_and_more.py
@@ -0,0 +1,36 @@
+# Generated by Django 4.2.15 on 2024-08-20 06:34
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tests', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='BlueHeadDuck',
+            fields=[
+                ('duck_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='tests.duck')),
+            ],
+            options={
+                'abstract': False,
+                'base_manager_name': 'objects',
+            },
+            bases=('tests.duck',),
+        ),
+        migrations.CreateModel(
+            name='PurpleHeadDuck',
+            fields=[
+            ],
+            options={
+                'proxy': True,
+                'indexes': [],
+                'constraints': [],
+            },
+            bases=('tests.blueheadduck',),
+        ),
+    ]
diff --git a/polymorphic/tests/models.py b/polymorphic/tests/models.py
index 76e1b626..d43bc33b 100644
--- a/polymorphic/tests/models.py
+++ b/polymorphic/tests/models.py
@@ -496,3 +496,28 @@ class SubclassSelectorProxyConcreteModel(SubclassSelectorProxyModel):
 
 class NonPolymorphicParent(PolymorphicModel, Group):
     test = models.CharField(max_length=22, default="test_non_polymorphic_parent")
+
+
+# models for https://github.com/jazzband/django-polymorphic/issues/615
+
+
+class BlueHeadDuck(Duck):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        # This wasn't run before the fix:
+        self.color = "blue"
+
+
+class HomeDuck(models.Model):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.home = "Duckburg"
+
+    class Meta:
+        abstract = True
+
+
+# Not sure if this will be necessary...
+class PurpleHeadDuck(HomeDuck, BlueHeadDuck):
+    class Meta:
+        proxy = True
diff --git a/polymorphic/tests/test_query.py b/polymorphic/tests/test_query.py
new file mode 100644
index 00000000..8d47b0d8
--- /dev/null
+++ b/polymorphic/tests/test_query.py
@@ -0,0 +1,12 @@
+from polymorphic.tests.models import Duck, PurpleHeadDuck
+
+
+def test_transmogrify_with_init(db):
+    pur = PurpleHeadDuck.objects.create()
+    assert pur.color == "blue"
+    assert pur.home == "Duckburg"
+
+    pur = Duck.objects.get(id=pur.id)
+    assert pur.color == "blue"
+    # issues/615 fixes following line:
+    assert pur.home == "Duckburg"

From 28709ac63cbfe622da51014c054d8b94953f325e Mon Sep 17 00:00:00 2001
From: Bartosz Dabrowski <bartosz.dabrowski@adverity.com>
Date: Tue, 20 Aug 2024 14:13:13 +0200
Subject: [PATCH 3/4] Removed comment

---
 polymorphic/tests/models.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/polymorphic/tests/models.py b/polymorphic/tests/models.py
index d43bc33b..606cefd5 100644
--- a/polymorphic/tests/models.py
+++ b/polymorphic/tests/models.py
@@ -517,7 +517,6 @@ class Meta:
         abstract = True
 
 
-# Not sure if this will be necessary...
 class PurpleHeadDuck(HomeDuck, BlueHeadDuck):
     class Meta:
         proxy = True

From fcc8751b4e3b7b8fb28ec9245184fa90272c7278 Mon Sep 17 00:00:00 2001
From: Bartosz Dabrowski <bartosz.dabrowski@adverity.com>
Date: Tue, 20 Aug 2024 14:13:50 +0200
Subject: [PATCH 4/4] Removed comment

---
 polymorphic/tests/models.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/polymorphic/tests/models.py b/polymorphic/tests/models.py
index 606cefd5..8116f009 100644
--- a/polymorphic/tests/models.py
+++ b/polymorphic/tests/models.py
@@ -504,7 +504,6 @@ class NonPolymorphicParent(PolymorphicModel, Group):
 class BlueHeadDuck(Duck):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        # This wasn't run before the fix:
         self.color = "blue"