Ticket #14497: admin-filefield-readonly-display.diff

django/contrib/admin/util.py

@@ -291 +291 @@
         return formats.number_format(value, field.decimal_places)
     elif isinstance(field, models.FloatField):
         return formats.number_format(value)
+    elif isinstance(field, models.FileField):
+        try:
+            # Causes a ValueError if file is empty.
+            value.file
+            return mark_safe(u'<a href="%s">%s</a>'
+                             % (escape(value.url),
+                                escape(force_unicode(value))))
+        except ValueError:
+            return EMPTY_CHANGELIST_VALUE
     else:
         return smart_unicode(value)