From 7861dae4f95eaca5191a990e56a279b8ab79b5f4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alieh=20Ryma=C5=A1e=C5=ADski?= <alieh.rymasheuski@gmail.com>
Date: Wed, 29 Jun 2022 17:01:37 +0000
Subject: [PATCH] Show field values before deletion in the admin

---
 CHANGELOG.md            |  4 ++++
 auditlog/mixins.py      |  2 --
 auditlog_tests/tests.py | 16 ++++++++++++++--
 3 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 50f2b4b..5ea608b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changes
 
+#### Improvements
+
+- feat: Display the diff for deleted objects in the admin ([#396](https://github.com/jazzband/django-auditlog/pull/396))
+
 ## 2.1.0 (2022-06-27)
 
 #### Improvements
diff --git a/auditlog/mixins.py b/auditlog/mixins.py
index 1105751..6b04572 100644
--- a/auditlog/mixins.py
+++ b/auditlog/mixins.py
@@ -60,8 +60,6 @@ class LogEntryAdminMixin:
     msg_short.short_description = "Changes"
 
     def msg(self, obj):
-        if obj.action == LogEntry.Action.DELETE:
-            return ""  # delete
         changes = json.loads(obj.changes)
 
         atom_changes = {}
diff --git a/auditlog_tests/tests.py b/auditlog_tests/tests.py
index 7f1c145..0e3e53d 100644
--- a/auditlog_tests/tests.py
+++ b/auditlog_tests/tests.py
@@ -1274,9 +1274,21 @@ class DiffMsgTest(TestCase):
         )
 
     def test_changes_msg_delete(self):
-        log_entry = self._create_log_entry(LogEntry.Action.DELETE, {})
+        log_entry = self._create_log_entry(
+            LogEntry.Action.DELETE,
+            {"field one": ["value before deletion", None], "field two": [11, None]},
+        )
 
-        self.assertEqual(self.admin.msg(log_entry), "")
+        self.assertEqual(
+            self.admin.msg(log_entry),
+            (
+                "<table>"
+                "<tr><th>#</th><th>Field</th><th>From</th><th>To</th></tr>"
+                "<tr><td>1</td><td>field one</td><td>value before deletion</td><td>None</td></tr>"
+                "<tr><td>2</td><td>field two</td><td>11</td><td>None</td></tr>"
+                "</table>"
+            ),
+        )
 
     def test_changes_msg_create(self):
         log_entry = self._create_log_entry(