Django 2.1 prep: add renderer argument to Widget.render()

common/widgets.py

@@ -46,7 +46,7 @@ class DateWidget(Widget):
     def sqeeze_form_group(self, html, width=4):
         return '<div class="col-md-{width}">{html}</div>'.format(width=width, html=html)
 
-    def render(self, name, value, attrs=None):
+    def render(self, name, value, attrs=None, renderer=None):
         try:
             year_val, month_val, day_val = value.year, value.month, value.day
         except AttributeError:

mails/widgets.py

@@ -44,7 +44,7 @@ class SummernoteEditor(widgets.Textarea):
         json_options = json_options.replace('"csrftokenplaceholder"', 'getCookie("csrftoken")')
         return json_options
 
-    def render(self, name, value, attrs=None):
+    def render(self, name, value, attrs=None, renderer=None):
         html = super().render(name, value, attrs)
         el_id = self.build_attrs(attrs).get('id')
         html += self.trigger_summernote(el_id, self.get_options())