data renderer aggregating multiple source results into one list

src/cmsplugin_blurp/renderers/data_source_list.py

@@ -0,0 +1,19 @@
+import logging
+log = logging.getLogger(__name__)
+
+from . import data_source
+
+
+class Renderer(data_source.Renderer):
+    """
+    Aggregates all data from the sources into a list and expose them to the
+    template with the name of its slug
+    """
+    def render(self, context):
+        context[self.slug] = []
+        for slug, data in self.get_sources(context):
+            try:
+                context[self.slug].append(data.content)
+            except Exception as e:
+                log.exception("exception occured while extending the list: %s", e)
+        return super(Renderer, self).render(context)

src/cmsplugin_blurp/tests.py

@@ -32,6 +32,25 @@ for kind in ('raw', 'json', 'rss', 'xml'):
             ]
         }
 
+CMS_PLUGIN_BLURP_LIST_RENDERERS = {
+    'json': {
+        'template': 'test.html',
+        'class': 'cmsplugin_blurp.renderers.data_source_list.Renderer',
+        'sources': [
+            {
+                'slug': 'list_data_source1',
+                'parser_type': 'json',
+                'url': 'file://' + os.path.join(BASE_FILE, 'json'),
+            },
+            {
+                'slug': 'list_data_source2',
+                'parser_type': 'json',
+                'url': 'file://' + os.path.join(BASE_FILE, 'json'),
+            }
+        ]
+    }
+}
+
 @override_settings(CMS_PLUGIN_BLURP_RENDERERS=CMS_PLUGIN_BLURP_RENDERERS)
 class RendererTestCase(TestCase):
     def test_choices(self):
@@ -78,3 +97,13 @@ class RendererTestCase(TestCase):
         c = r.render(Context())
         self.assertTrue(c.has_key('xml'))
         self.assertEqual(c['xml']().tag, 'html')
+
+@override_settings(CMS_PLUGIN_BLURP_RENDERERS=CMS_PLUGIN_BLURP_LIST_RENDERERS)
+class DataSourceListRenderTestCase(TestCase):
+
+    def test_data_source_list_render_json(self):
+        r = utils.resolve_renderer('json')
+        self.assertIsNotNone(r)
+        c = r.render(Context())
+        self.assertTrue(c.has_key('json'))
+        self.assertIsInstance(c['json'], list)