Fix Django 6.0 pagination error in jazzmin admin template

JAZZMIN_FIX_README.md

@@ -3,33 +3,38 @@
 ## Problem
 Django 6.0 introduced a breaking change where `format_html()` now requires at least one argument (args or kwargs). The jazzmin package (v3.0.1) uses `format_html(html_str)` which causes a `TypeError: args or kwargs must be provided` error when accessing admin list views with pagination.
 
+### Error Example
+```
+TypeError at /admin/core/booking/
+args or kwargs must be provided.
+
+Exception Location: /opt/Finoa/.venv/lib/python3.12/site-packages/django/utils/html.py, line 137, in format_html
+```
+
 ## Solution
 This fix patches the jazzmin package's `jazzmin_paginator_number` template tag to use `mark_safe()` instead of `format_html()` for Django 6.0 compatibility.
 
 ### Implementation
 
-1. **Automated Patch Script** (`fix_jazzmin.sh`):
-   - Automatically locates the jazzmin package installation
-   - Patches line 256 in `jazzmin/templatetags/jazzmin.py`
-   - Replaces `return format_html(html_str)` with `return mark_safe(html_str)`
+**Automated Patch Script** (`fix_jazzmin.sh`):
+- Automatically locates the jazzmin package installation
+- Patches line 256 in `jazzmin/templatetags/jazzmin.py`
+- Replaces `return format_html(html_str)` with `return mark_safe(html_str)`
 
-2. **Usage**:
-   ```bash
-   # Run after installing requirements.txt
-   ./fix_jazzmin.sh
-   ```
+### Usage
+```bash
+# Run after installing requirements.txt
+cd /path/to/Finoa
+pip install -r requirements.txt
+./fix_jazzmin.sh
+python manage.py runserver
+```
 
 ## Why This Works
 - `mark_safe()` marks a string as safe for HTML output without requiring additional arguments
 - The HTML string is already properly formatted by the template tag
 - No security impact since the string is built from trusted sources (Django's own ChangeList object)
-
-## Files Changed
-- `fix_jazzmin.sh` - New patch script
-- `finoa/settings.py` - Updated INSTALLED_APPS order (core before jazzmin) for template tag override precedence
-- `core/templatetags/__init__.py` - Template tags package init
-- `core/templatetags/jazzmin.py` - Custom jazzmin template tag override (fallback solution)
-- `core/apps.py` - Reverted to original (monkey patch approach removed)
+- The patch is applied directly to the installed jazzmin package
 
 ## Deployment
 Run the patch script as part of your deployment process:
@@ -39,10 +44,22 @@ pip install -r requirements.txt
 python manage.py runserver
 ```
 
+**Note**: The patch needs to be reapplied after each time you reinstall or upgrade the jazzmin package.
+
 ## Alternative Solutions Considered
 1. ✗ Monkey patching in `CoreConfig.ready()` - Doesn't work because template tags are loaded before AppConfig.ready()
-2. ✗ Custom template tag override - Doesn't work reliably due to Python module caching
+2. ✗ Custom template tag override - Doesn't work because Django loads the first matching template tag library name from INSTALLED_APPS, and both modules use the same name "jazzmin"
 3. ✓ Direct file patch via shell script - Works reliably and is easy to integrate into deployment
 
+## Technical Details
+The issue is in `/path/to/site-packages/jazzmin/templatetags/jazzmin.py` at line 256:
+```python
+# Before (causes error in Django 6.0):
+return format_html(html_str)
+
+# After (works in Django 6.0):
+return mark_safe(html_str)
+```
+
 ## Note
-This is a temporary fix until jazzmin releases a Django 6.0 compatible version. Monitor the jazzmin GitHub repository for official updates.
+This is a temporary fix until jazzmin releases a Django 6.0 compatible version. Monitor the [jazzmin GitHub repository](https://github.com/farridav/django-jazzmin) for official updates.

core/tests_jazzmin_templatetag.py

@@ -0,0 +1,84 @@
+"""
+Tests for Django 6.0 compatibility fixes in core.templatetags.jazzmin
+"""
+from django.contrib.admin.views.main import ChangeList
+from django.test import TestCase, RequestFactory
+from django.contrib.admin.sites import AdminSite
+from django.contrib.auth.models import User
+from django.contrib.admin import ModelAdmin
+
+from core.templatetags.jazzmin import jazzmin_paginator_number
+
+
+class JazzminPaginatorNumberTestCase(TestCase):
+    """Test the jazzmin_paginator_number template tag for Django 6.0 compatibility."""
+
+    def setUp(self):
+        """Set up test fixtures."""
+        self.factory = RequestFactory()
+        self.site = AdminSite()
+
+    def test_jazzmin_paginator_number_returns_safe_html(self):
+        """Test that jazzmin_paginator_number returns SafeText without errors."""
+        # Create a mock request
+        request = self.factory.get('/admin/auth/user/')
+        request.user = User(username='admin', is_staff=True, is_superuser=True)
+
+        # Create a ModelAdmin instance
+        model_admin = ModelAdmin(User, self.site)
+
+        # Create a ChangeList - this would normally be done by Django admin
+        changelist = ChangeList(
+            request=request,
+            model=User,
+            list_display=['username'],
+            list_display_links=['username'],
+            list_filter=[],
+            date_hierarchy=None,
+            search_fields=[],
+            list_select_related=[],
+            list_per_page=100,
+            list_max_show_all=200,
+            list_editable=[],
+            model_admin=model_admin,
+            sortable_by=[],
+            search_help_text=None,
+        )
+
+        # Test the template tag with different page numbers
+        # This should not raise "TypeError: args or kwargs must be provided"
+        try:
+            result = jazzmin_paginator_number(changelist, 1)
+            self.assertIsNotNone(result)
+            self.assertIn('page-item', str(result))
+        except TypeError as e:
+            if "args or kwargs must be provided" in str(e):
+                self.fail("Template tag still uses format_html incorrectly")
+            raise
+
+    def test_jazzmin_paginator_number_start_page(self):
+        """Test pagination rendering for the first page."""
+        request = self.factory.get('/admin/auth/user/')
+        request.user = User(username='admin', is_staff=True, is_superuser=True)
+
+        model_admin = ModelAdmin(User, self.site)
+        changelist = ChangeList(
+            request=request,
+            model=User,
+            list_display=['username'],
+            list_display_links=['username'],
+            list_filter=[],
+            date_hierarchy=None,
+            search_fields=[],
+            list_select_related=[],
+            list_per_page=100,
+            list_max_show_all=200,
+            list_editable=[],
+            model_admin=model_admin,
+            sortable_by=[],
+            search_help_text=None,
+        )
+
+        result = jazzmin_paginator_number(changelist, 1)
+        self.assertIn('previous', str(result))
+        self.assertIn('«', str(result))