Fixed #25373 -- Added warning logging for exceptions during {% include %} tag rendering.

docs/ref/templates/builtins.txt

@@ -673,9 +673,14 @@ if it's missing or has syntax errors), the behavior varies depending on the
 :class:`template engine's <django.template.Engine>` ``debug`` option (if not
 set, this option defaults to the value of :setting:`DEBUG`). When debug mode is
 turned on, an exception like :exc:`~django.template.TemplateDoesNotExist` or
-:exc:`~django.template.TemplateSyntaxError` will be raised; otherwise
-``{% include %}`` silences any exception that happens while rendering the
-included template and returns an empty string.
+:exc:`~django.template.TemplateSyntaxError` will be raised. When debug mode
+is turned off, ``{% include %}`` logs a warning to the ``django.template``
+logger with the exception that happens while rendering the included template
+and returns an empty string.
+
+.. versionchanged:: 1.9
+
+    Template logging now includes the warning logging mentioned above.
 
 .. note::
     The :ttag:`include` tag should be considered as an implementation of

docs/releases/1.9.txt

@@ -596,8 +596,15 @@ Templates
 * Added a :meth:`Context.setdefault() <django.template.Context.setdefault>`
   method.
 
-* A warning will now be logged for missing context variables. These messages
-  will be logged to the :ref:`django.template <django-template-logger>` logger.
+* The :ref:`django.template <django-template-logger>` logger was added and
+  includes the following messages:
+
+  * A ``DEBUG`` level message for missing context variables.
+
+  * A ``WARNING`` level message for uncaught exceptions raised
+    during the rendering of an ``{% include %}`` when debug mode is off
+    (helpful since ``{% include %}`` silences the exception and returns an
+    empty string).
 
 * The :ttag:`firstof` template tag supports storing the output in a variable
   using 'as'.