Update log_activity mixin with rich Markdown

Use the rich library to output the debug information in a more
human-readable format. Unfortunately, the logger does not support rich
Markdown text, so we need to output this via the console.

src/core/models/activitylog.py

@@ -2,13 +2,12 @@ import logging
 from typing import TYPE_CHECKING, TypedDict
 
 from pydantic import ConfigDict, TypeAdapter, ValidationError
+from rich.console import Console
+from rich.markdown import Markdown
 
-from django.conf import settings
 from django.contrib.contenttypes.fields import GenericForeignKey
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
-from django.utils.html import format_html
-from django.utils.safestring import mark_safe
 from django.utils.translation import gettext_lazy as _
 
 if TYPE_CHECKING:
@@ -180,24 +179,25 @@ class ActivityLogMixin:
             changes=changes,
         )
 
-        # debug output
-        if settings.DEBUG:
-            msg = (
-                format_html('<b>DEBUG INFO:</b> <em>changes</em> on: {0}\n', self)
-                + mark_safe('  <table class="table table-border table-striped table-sm"><thead><tr><th>field</th><th>value</th></tr></thead><tbody>\n')
-                + mark_safe(
-                    ''.join(
-                        format_html(
-                            '    <tr><td>{0}</td><td>{1}</td></tr>\n',
-                            k,
-                            format_html('<s>{}</s> {}', *v) if isinstance(v, tuple) else v,
-                        )
-                        for k, v in changes.items()
-                    )
-                )
-                + mark_safe('  </tbody></table>')
-            )
-            logging.debug(msg)
+        if logger.isEnabledFor(logging.TRACE):
+            # log the changes in a human-readable format
+            # We need to output this via console as the logger does not support rich Markdown text
+            console = Console()
+            md = f'**DEBUG INFO**: *changes* on: {self}\n\n'
+            md += '| field | value |\n'
+            md += '| --- | --- |\n'
+
+            for k, v in changes.items():
+                if isinstance(v, dict):
+                    md += f'| {k} | '
+                    if 'old' in v:
+                        md += f'~~{v["old"]}~~ '
+                    if 'new' in v:
+                        md += f'{v["new"]}'
+                    md += ' |\n'
+                else:
+                    md += f'| {k} | {v} |\n'
+            console.print(Markdown(md))
 
 
 def model_form_valid_activitylog(