Fixed #26145 -- Made debug context processor return queries for all databases.

django/template/context_processors.py

@@ -9,6 +9,8 @@ of a DjangoTemplates backend and used by RequestContext.
 
 from __future__ import unicode_literals
 
+import itertools
+
 from django.conf import settings
 from django.middleware.csrf import get_token
 from django.utils.encoding import smart_text
@@ -40,10 +42,13 @@ def debug(request):
     context_extras = {}
     if settings.DEBUG and request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS:
         context_extras['debug'] = True
-        from django.db import connection
+        from django.db import connections
         # Return a lazy reference that computes connection.queries on access,
         # to ensure it contains queries triggered after this function runs.
-        context_extras['sql_queries'] = lazy(lambda: connection.queries, list)
+        context_extras['sql_queries'] = lazy(
+            lambda: list(itertools.chain(*[connections[x].queries for x in connections])),
+            list
+        )
     return context_extras
 
 

docs/ref/templates/api.txt

@@ -699,8 +699,13 @@ the request's IP address (``request.META['REMOTE_ADDR']``) is in the
   you're in :setting:`DEBUG` mode.
 * ``sql_queries`` -- A list of ``{'sql': ..., 'time': ...}`` dictionaries,
   representing every SQL query that has happened so far during the request
-  and how long it took. The list is in order by query and lazily generated
+  and how long it took. The list is in order by database alias and then by
-  on access.
+  query. It's lazily generated on access.
+
+.. versionchanged:: 1.10
+
+    In older versions, only the queries for the default database alias were
+    included.
 
 ``django.template.context_processors.i18n``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

docs/releases/1.10.txt

@@ -414,6 +414,9 @@ Templates
 * Allowed :tfilter:`dictsort` to order a list of lists by an element at a
   specified index.
 
+* The :func:`~django.template.context_processors.debug` context processor
+  contains queries for all database aliases instead of only the default alias.
+
 Tests
 ~~~~~
 

tests/context_processors/templates/context_processors/debug.html

@@ -12,4 +12,8 @@ Second query list: {{ sql_queries|length }}
 
 Third query list: {{ sql_queries|length }}
 
+{% for obj in other_debug_objects.all %}{{ obj }}{% endfor %}
+
+Fourth query list: {{ sql_queries|length }}
+
 {% endif %}

tests/context_processors/tests.py

@@ -87,3 +87,5 @@ class DebugContextProcessorTests(TestCase):
         self.assertContains(response, 'Second query list: 1')
         # Check we have not actually memoized connection.queries
         self.assertContains(response, 'Third query list: 2')
+        # Check queries for DB connection 'other'
+        self.assertContains(response, 'Fourth query list: 3')

tests/context_processors/views.py

@@ -8,5 +8,8 @@ def request_processor(request):
 
 
 def debug_processor(request):
-    context = {'debug_objects': DebugObject.objects}
+    context = {
+        'debug_objects': DebugObject.objects,
+        'other_debug_objects': DebugObject.objects.using('other'),
+    }
     return render(request, 'context_processors/debug.html', context)