Fixed #18169 -- NoReverseMatch not silenced if from block.super

django/core/urlresolvers.py

@@ -75,8 +75,7 @@ class Resolver404(Http404):
     pass
 
 class NoReverseMatch(Exception):
-    # Don't make this raise an error when used in a template.
-    silent_variable_failure = True
+    pass
 
 def get_callable(lookup_view, can_fail=False):
     """

docs/releases/1.6.txt

@@ -616,6 +616,12 @@ Miscellaneous
   stored as ``null``. Previously, storing a ``blank`` value in a field which
   did not allow ``null`` would cause a database exception at runtime.
 
+* If a :class:`~django.core.urlresolvers.NoReverseMatch` exception is risen
+  from a method when rendering a template it is not silenced. For example
+  {{ obj.view_href }} will cause template rendering to fail if view_href()
+  raises NoReverseMatch. There is no change to {% url %} tag, it causes
+  template rendering to fail like always when NoReverseMatch is risen.
+
 Features deprecated in 1.6
 ==========================
 

tests/template_tests/templates/included_base.html

@@ -0,0 +1,3 @@
+{% block content %}
+  {% block error_here %}{% endblock %}
+{% endblock %}

tests/template_tests/templates/included_content.html

@@ -0,0 +1,11 @@
+{% extends "included_base.html" %}
+
+{% block content %}
+  content
+  {{ block.super }}
+{% endblock %}
+
+{% block error_here %}
+  error here
+  {% url "non_existing_url" %}
+{% endblock %}

tests/template_tests/tests.py

@@ -444,6 +444,15 @@ def test_ifchanged_render_once(self):
         output = template.render(Context({}))
         self.assertEqual(output, '1st time')
 
+    def test_super_errors(self):
+        """
+        Test behavior of the raise errors into included blocks.
+        See #18169
+        """
+        t = loader.get_template('included_content.html')
+        with self.assertRaises(urlresolvers.NoReverseMatch):
+            t.render(Context({}))
+
     def test_templates(self):
         template_tests = self.get_template_tests()
         filter_tests = filters.get_filter_tests()