[#1633] Add activity streams to dataset pages.

They don't look particularly nice yet and there's no test for it yet,
but it works.

Add package_activity_list() and package_activity_list_html() logic
functions.

Package read controller calls package_activity_list_html() logic
function and adds the activity stream HTML to the template context.
Package read template retrieves the HTML and outputs it into the page.

ckan/controllers/package.py

@@ -29,6 +29,7 @@
 import ckan.authz
 import ckan.rating
 import ckan.misc
+import ckan.logic.action.get
 
 log = logging.getLogger('ckan.controllers')
 
@@ -215,7 +216,14 @@ def read(self, id):
 
         # used by disqus plugin
         c.current_package_id = c.pkg.id
-
+
+        # Add the package's activity stream (already rendered to HTML) to the
+        # template context for the package/read.html template to retrieve
+        # later.
+        c.package_activity_stream = \
+                ckan.logic.action.get.package_activity_list_html(context,
+                    {'id': c.current_package_id})
+
         if config.get('rdf_packages'):
             accept_header = request.headers.get('Accept', '*/*')
             for content_type, exts in negotiate(autoneg_cfg, accept_header):

ckan/logic/action/get.py

@@ -864,6 +864,14 @@ def user_activity_list(context, data_dict):
             model.activity.Activity).filter_by(user_id=user_id).all()
     return activity_list_dictize(activity_objects, context)
 
+def package_activity_list(context, data_dict):
+    '''Return a package's public activity stream as a list of dicts.'''
+    model = context['model']
+    package_id = data_dict['id']
+    activity_objects = model.Session.query(
+            model.activity.Activity).filter_by(object_id=package_id).all()
+    return activity_list_dictize(activity_objects, context)
+
 def activity_detail_list(context, data_dict):
     '''Return an activity's list of activity detail items, as a list of dicts.
     
@@ -934,14 +942,7 @@ def render_changed_group_activity(context, activity):
   'changed group' : render_changed_group_activity,
   }
 
-def user_activity_list_html(context, data_dict):
-    '''Return an HTML rendering of a user's public activity stream.
-    
-    The activity stream is rendered as a snippet of HTML meant to be included
-    in an HTML page.
-
-    '''
-    activity_stream = user_activity_list(context, data_dict)
+def _activity_list_to_html(context, activity_stream):
     html = []
     for activity in reversed(activity_stream):
         activity_type = activity['activity_type']
@@ -950,3 +951,23 @@ def user_activity_list_html(context, data_dict):
                 "type '%s'" % str(activity_type))
         html.append(activity_renderers[activity_type](context, activity))
     return literal('\n'.join(html))
+
+def user_activity_list_html(context, data_dict):
+    '''Return an HTML rendering of a user's public activity stream.
+    
+    The activity stream is rendered as a snippet of HTML meant to be included
+    in an HTML page.
+
+    '''
+    activity_stream = user_activity_list(context, data_dict)
+    return _activity_list_to_html(context, activity_stream)
+
+def package_activity_list_html(context, data_dict):
+    '''Return an HTML rendering of a package's public activity stream.
+
+    The activity stream is rendered as a snippet of HTML meant to be included
+    in an HTML page.
+
+    '''
+    activity_stream = package_activity_list(context, data_dict)
+    return _activity_list_to_html(context, activity_stream)

ckan/templates/package/read.html

@@ -69,6 +69,11 @@ <h3>Related Datasets</h3>
       </ul>
     </li>
 
+    <li class="sidebar-section">
+        <h3>Activity</h3>
+        ${c.package_activity_stream}
+    </li>
+
     <!-- <py:if test="not(c.pkg.isopen() and c.pkg.resources)"> -->
     <!--   <h3 i18n:msg="">This dataset is Not Open</h3>  -->
     <!--   <p>Either because it is not openly licensed or is missing -->