diff --git a/ckan/controllers/package.py b/ckan/controllers/package.py
index 2da659adc6c..709064a088f 100644
--- a/ckan/controllers/package.py
+++ b/ckan/controllers/package.py
@@ -1324,8 +1324,11 @@ def resource_datapreview(self, id, resource_id):
         This could be an img tag where the image is loaded directly or an iframe that
         embeds a webpage, recline or a pdf preview.
         '''
-        context = {'model': model, 'session': model.Session,
-                   'user': c.user or c.author}
+        context = {
+            'model': model,
+            'session': model.Session,
+            'user': c.user or c.author
+        }
 
         try:
             c.resource = get_action('resource_show')(context,
@@ -1341,7 +1344,7 @@ def resource_datapreview(self, id, resource_id):
                 log.warn('Multiple previews are possible. {0}'.format(plugins_that_can_preview))
 
             plugin = plugins_that_can_preview[0]
-            plugin.setup_template_variables(context, c)
+            plugin.setup_template_variables(context, {'resource': c.resource, 'package': c.package})
 
         except NotFound:
             abort(404, _('Resource not found'))
diff --git a/ckan/lib/helpers.py b/ckan/lib/helpers.py
index c9db7cd90d2..57054e46ba5 100644
--- a/ckan/lib/helpers.py
+++ b/ckan/lib/helpers.py
@@ -1290,19 +1290,6 @@ def resource_preview(resource, pkg_id):
     directly = False
     url = ''
 
-    '''
-    if resource.get('datastore_active') or format_lower in ['csv', 'xls', 'tsv']:
-        url = url_for(controller='package', action='resource_datapreview',
-            resource_id=resource['id'], preview_type='recline', id=pkg_id, qualified=True)
-    elif format_lower in PDF:
-        url = url_for(controller='package', action='resource_datapreview',
-            resource_id=resource['id'], preview_type='pdf', id=pkg_id, qualified=True)
-    elif format_lower == 'jsonp':
-        url = url_for(controller='package', action='resource_datapreview',
-            resource_id=resource['id'], preview_type='json', id=pkg_id, qualified=True)
-    elif format_lower in LOADABLE:
-        url = resource['url']'''
-
     if _can_be_previewed(resource):
         url = url = url_for(controller='package', action='resource_datapreview',
             resource_id=resource['id'], id=pkg_id, qualified=True)
diff --git a/ckan/plugins/interfaces.py b/ckan/plugins/interfaces.py
index 7312dc3c905..c52ef3bdaa2 100644
--- a/ckan/plugins/interfaces.py
+++ b/ckan/plugins/interfaces.py
@@ -209,10 +209,9 @@ def requires_same_orign(self, resource):
         a different domain because of the same origin policy.
         '''
 
-    def setup_template_variables(self, context, c):
+    def setup_template_variables(self, context, data_dict):
         '''
         Add variables to c just prior to the template being rendered.
-        ``resource``, ``package`` and ``resource_json`` are already defined.
         '''
 
     def preview_template(self, context):