Update import for django.template.context_processors.

jfu/templatetags/jfutags.py

@@ -1,16 +1,18 @@
-from django.core.context_processors import csrf
 from django.core.urlresolvers import reverse
 from django.template import Library, Context, loader
+from django.template.context_processors import csrf
+import django
 
 register = Library()
 
-@register.simple_tag( takes_context = True )
+
+@register.simple_tag(takes_context=True)
 def jfu(
-        context,
-        template_name = 'jfu/upload_form.html',
-        upload_handler_name = 'jfu_upload',
-        *args, **kwargs
-    ):
+    context,
+    template_name='jfu/upload_form.html',
+    upload_handler_name='jfu_upload',
+    *args, **kwargs
+):
     """
     Displays a form for uploading files using jQuery File Upload.
 
@@ -21,19 +23,28 @@ def jfu(
     Any additionally supplied positional and keyword arguments are directly
     forwarded to the named custom upload-handling URL.
     """
-    context.update( { 
-        'JQ_OPEN'  : '{%',
-        'JQ_CLOSE' : '%}',
+    context.update({
+        'JQ_OPEN': '{%',
+        'JQ_CLOSE': '%}',
         'upload_handler_url': reverse(
-            upload_handler_name, args = args, kwargs = kwargs
+            upload_handler_name, args=args, kwargs=kwargs
         ),
-    } )
+    })
 
     # Use the request context variable, injected
     # by django.core.context_processors.request,
     # to generate the CSRF token.
-    context.update( csrf( context.get('request') ) )
+    context.update(csrf(context.get('request')))
+
+    t = loader.get_template(template_name)
 
-    t = loader.get_template( template_name )
+    # Calling Template.render() with a Context is deprecated.
+    # See: https://github.com/django/django/blob/1.9rc1/django/template/backends/django.py#L64-L89
+    if django.VERSION >= (1, 8):
+        if isinstance(context, Context):
+            context = context.flatten()
+    else:
+        if not isinstance(context, Context):
+            context = Context(context)
 
-    return t.render( Context( context ) )
+    return t.render(context)