Add SuffixedMultiWidget support for django < 1.11

django_filters/widgets.py

@@ -3,6 +3,7 @@
 
 from collections import Iterable
 from itertools import chain
+from re import search, sub
 try:
     from urllib.parse import urlencode
 except:
@@ -123,6 +124,22 @@ def value_omitted_from_data(self, data, files, name):
             for widget, suffix in zip(self.widgets, self.suffixes)
         )
 
+    # Django < 1.11 compat
+    def format_output(self, rendered_widgets):
+        rendered_widgets = [
+            self.replace_name(output, i)
+            for i, output in enumerate(rendered_widgets)
+        ]
+        return '\n'.join(rendered_widgets)
+
+    def replace_name(self, output, index):
+        result = search(r'name="(?P<name>.*)_%d"' % index, output)
+        name = result.group('name')
+        name = self.suffixed(name, self.suffixes[index])
+        name = 'name="%s"' % name
+
+        return sub(r'name=".*_%d"' % index, name, output)
+
 
 class RangeWidget(SuffixedMultiWidget):
     template_name = 'django_filters/widgets/multiwidget.html'
@@ -134,6 +151,10 @@ def __init__(self, attrs=None):
 
     def format_output(self, rendered_widgets):
         # Method was removed in Django 1.11.
+        rendered_widgets = [
+            self.replace_name(output, i)
+            for i, output in enumerate(rendered_widgets)
+        ]
         return '-'.join(rendered_widgets)
 
     def decompress(self, value):