Add support for microsecond formats for Django<1.6

Relevant django ticket:
https://code.djangoproject.com/ticket/19917

Author: Ryan P Kilby

rest_framework_filters/fields.py

@@ -1,5 +1,11 @@
 from django import forms
 
+
+# https://code.djangoproject.com/ticket/19917
+class Django14TimeField(forms.TimeField):
+    input_formats = ['%H:%M:%S', '%H:%M:%S.%f', '%H:%M']
+
+
 class ArrayDecimalField(forms.DecimalField):
     def clean(self, value):
         if value is None:

rest_framework_filters/filters.py

@@ -1,6 +1,7 @@
 from __future__ import absolute_import
 from __future__ import unicode_literals
 
+import django
 from django.utils import six
 from django_filters.filters import *
 
@@ -33,6 +34,11 @@ class AllLookupsFilter(Filter):
 # Fixed-up versions of some of the default filters
 ###################################################
 
+class TimeFilter(TimeFilter):
+    if django.VERSION < (1, 6):
+        field_class = fields.Django14TimeField
+
+
 class InSetNumberFilter(NumberFilter):
     field_class = fields.ArrayDecimalField
 

rest_framework_filters/filterset.py

@@ -24,12 +24,19 @@
 
 
 class FilterSet(django_filters.FilterSet):
-    # In order to support ISO-8601 -- which is the default output for
-    # DRF -- we need to set up custom date/time input formats.
     filter_overrides = {
+
+        # In order to support ISO-8601 -- which is the default output for
+        # DRF -- we need to use django-filter's IsoDateTimeFilter
         models.DateTimeField: {
             'filter_class': filters.IsoDateTimeFilter,
         },
+
+        # Django < 1.6 time input formats did not account for microseconds
+        # https://code.djangoproject.com/ticket/19917
+        models.TimeField: {
+            'filter_class': filters.TimeFilter,
+        }
     }
 
     LOOKUP_TYPES = django_filters.filters.LOOKUP_TYPES