views: Add notes to patch-detail view

The submission template now includes a section to display notes, these
can be filtered out depending if the request user is a maintainer for
the patch's project and on the note maintainer_only attribute

Signed-off-by: andrepapoti <[email protected]>

Author: andrepapoti

patchwork/templates/patchwork/submission.html

@@ -266,6 +266,24 @@ <h2>Message</h2>
   </pre>
 </div>
 
+{% for note in notes %}
+{% if forloop.first %}
+<h2>Notes</h2>
+{% endif %}
+<a name="{{ item.id }}"></a>
+<div class="submission-message">
+  <div class="meta">
+    {{ note.submitter|personify:project }}
+    <span class="message-date">
+      Last modified: {{ note.last_modified }} UTC
+    </span>
+  </div>
+  <pre class="content">
+    {{ note.content }}
+  </pre>
+</div>
+{% endfor %}
+
 {% for item in comments %}
 {% if forloop.first %}
 <h2>Comments</h2>

patchwork/views/patch.py

@@ -122,6 +122,14 @@ def patch_detail(request, project_id, msgid):
         'submitter', 'date', 'id', 'content', 'patch', 'addressed'
     )
 
+    if (
+        request.user.is_authenticated
+        and patch.project not in request.user.profile.maintainer_projects.all()
+    ):
+        notes = patch.note.all()
+    else:
+        notes = patch.note.filter(maintainer_only=False)
+
     if patch.related:
         related_same_project = patch.related.patches.only(
             'name', 'msgid', 'project', 'related'
@@ -136,6 +144,7 @@ def patch_detail(request, project_id, msgid):
         related_same_project = []
         related_different_project = []
 
+    context['notes'] = notes
     context['comments'] = comments
     context['checks'] = Patch.filter_unique_checks(
         patch.check_set.all().select_related('user'),