can_propose only if there are changed objects

src/c3nav/editor/models/changeset.py

@@ -292,7 +292,7 @@ class ChangeSet(models.Model):
         return self.can_edit(request) and self.state == 'unproposed'
 
     def can_propose(self, request):
-        return self.can_edit(request) and not self.proposed
+        return self.can_edit(request) and not self.proposed and self.changed_objects_count
 
     def can_unpropose(self, request):
         return self.author_id == request.user.pk and self.state in ('proposed', 'reproposed')

src/c3nav/editor/templates/editor/changeset.html

@@ -134,7 +134,7 @@
             {% if can_edit %}
                 <a href="{% url 'editor.changesets.edit' pk=changeset.pk %}" class="btn btn-default">{% trans 'Edit' %}</a>
             {% endif %}
-            {% if can_edit and not changeset.proposed %}
+            {% if can_propose %}
                 <button type="submit" class="btn btn-primary" name="propose" value="1">{% trans 'Propose' %}</button>
             {% endif %}
             {% if can_start_review %}

src/c3nav/editor/views/changes.py

@@ -318,6 +318,7 @@ def changeset_detail(request, pk):
         'changeset': changeset,
         'can_edit': can_edit,
         'can_delete': can_delete,
+        'can_propose': changeset.can_propose(request),
         'can_unpropose': changeset.can_unpropose(request),
         'can_start_review': changeset.can_start_review(request),
         'can_end_review': changeset.can_end_review(request),