From ab606859d11118d65ba97dcda3a5e30fc65ac18d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniele=20Vigan=C3=B2?= <daniele@vigano.me>
Date: Thu, 8 Jan 2026 12:21:39 +0100
Subject: [PATCH] Fix a small regression in the admin introduced with Django 6

---
 ram/bookshelf/admin.py | 11 ++++++++---
 ram/roster/admin.py    | 10 +++++++---
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/ram/bookshelf/admin.py b/ram/bookshelf/admin.py
index bfcc34e..5b32260 100644
--- a/ram/bookshelf/admin.py
+++ b/ram/bookshelf/admin.py
@@ -2,7 +2,12 @@ import html
 
 from django.conf import settings
 from django.contrib import admin
-from django.utils.html import format_html, format_html_join, strip_tags
+from django.utils.html import (
+    format_html,
+    format_html_join,
+    strip_tags,
+    mark_safe,
+)
 from adminsortable2.admin import SortableAdminBase, SortableInlineAdminMixin
 
 from ram.admin import publish, unpublish
@@ -149,7 +154,7 @@ class BookAdmin(SortableAdminBase, admin.ModelAdmin):
     def invoices(self, obj):
         if obj.invoice.exists():
             html = format_html_join(
-                "<br>",
+                mark_safe("<br>"),
                 '<a href="{}" target="_blank">{}</a>',
                 ((i.file.url, i) for i in obj.invoice.all()),
             )
@@ -317,7 +322,7 @@ class CatalogAdmin(SortableAdminBase, admin.ModelAdmin):
     def invoices(self, obj):
         if obj.invoice.exists():
             html = format_html_join(
-                "<br>",
+                mark_safe("<br>"),
                 '<a href="{}" target="_blank">{}</a>',
                 ((i.file.url, i) for i in obj.invoice.all()),
             )
diff --git a/ram/roster/admin.py b/ram/roster/admin.py
index 7805122..1b2ca6a 100644
--- a/ram/roster/admin.py
+++ b/ram/roster/admin.py
@@ -2,8 +2,12 @@ import html
 
 from django.conf import settings
 from django.contrib import admin
-from django.utils.html import format_html, format_html_join, strip_tags
-
+from django.utils.html import (
+    format_html,
+    format_html_join,
+    strip_tags,
+    mark_safe,
+)
 from adminsortable2.admin import SortableAdminBase, SortableInlineAdminMixin
 
 from ram.utils import generate_csv
@@ -229,7 +233,7 @@ class RollingStockAdmin(SortableAdminBase, admin.ModelAdmin):
     def invoices(self, obj):
         if obj.invoice.exists():
             html = format_html_join(
-                "<br>",
+                mark_safe("<br>"),
                 '<a href="{}" target="_blank">{}</a>',
                 ((i.file.url, i) for i in obj.invoice.all()),
             )