From 0b1e6802936134261f7a34f0462da9e29e6fed1b Mon Sep 17 00:00:00 2001
From: Konstantinos Koukopoulos <koukopoulos@gmail.com>
Date: Thu, 5 Feb 2015 15:51:27 +0200
Subject: [PATCH] support queries when django-filter classes are used

---
 rest_framework_cj/renderers.py | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/rest_framework_cj/renderers.py b/rest_framework_cj/renderers.py
index 9b07d65..f02f259 100644
--- a/rest_framework_cj/renderers.py
+++ b/rest_framework_cj/renderers.py
@@ -145,6 +145,31 @@ def _transform_data(self, request, response, view, data):
         else:
             collection.update(self._get_items_and_links(view, data))
 
+        if hasattr(view, 'filter_class'):
+            href = request.build_absolute_uri(request.path)
+            fields = []
+            labels = []
+            model = getattr(view, 'model',
+                            getattr(view.queryset, 'model'))
+            for f, obj in view.filter_class().filters.items():
+                fields.append({
+                    "name": f,
+                    "value": ""
+                })
+                labels.append(getattr(obj, 'label') or f)
+            prompt = 'filter {} on {}'.format(
+                model._meta.verbose_name_plural.title(),
+                ", ".join(labels))
+            collection.update({
+                'queries': [
+                    {
+                        'href': href,
+                        'rel': 'search',
+                        'prompt': prompt,
+                        'data': fields
+                    }]
+                })
+
         return {'collection': collection}
 
     def get_href(self, request):