serve media previews

home/tests.py

@@ -1,6 +1,7 @@
+from django.conf import settings
 from django.core import mail
 from django.test import SimpleTestCase, TestCase, override_settings
-from django.urls import reverse
+from django.urls import reverse, resolve
 
 
 @override_settings(EMAIL_BACKEND="django.core.mail.backends.locmem.EmailBackend", ADMINISTRATOR_EMAIL="admin@example.com")
@@ -45,3 +46,11 @@ class FaviconTests(SimpleTestCase):
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response["Content-Type"], "image/svg+xml")
         self.assertIn(b"<svg", response.content)
+
+
+class MediaUrlTests(SimpleTestCase):
+    def test_media_route_is_registered(self):
+        match = resolve(f"{settings.MEDIA_URL}items/example.jpg")
+
+        self.assertEqual(match.func.__module__, "django.views.static")
+        self.assertEqual(match.func.__name__, "serve")

santehray/urls.py

@@ -14,10 +14,13 @@ Including another URLconf
     1. Import the include() function: from django.urls import include, path
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
+import re
+from urllib.parse import urlsplit
+
 from django.conf import settings
-from django.conf.urls.static import static
 from django.contrib import admin
-from django.urls import path, include
+from django.urls import include, path, re_path
+from django.views.static import serve
 
 from santehray import views
 
@@ -30,5 +33,13 @@ urlpatterns = [
     path('admin/', admin.site.urls),
 ]
 
-if settings.DEBUG:
-    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
+# Serve uploaded media through Django so item previews work in preview/production
+# deployments too. A dedicated web server or object storage can replace this later.
+if settings.MEDIA_URL and not urlsplit(settings.MEDIA_URL).netloc:
+    urlpatterns += [
+        re_path(
+            rf"^{re.escape(settings.MEDIA_URL.lstrip('/'))}(?P<path>.*)$",
+            serve,
+            {"document_root": settings.MEDIA_ROOT},
+        ),
+    ]