Add panel that shows who topic is assigned to

assets/javascripts/discourse/initializers/extend-for-assigns.js.es6

@@ -2,6 +2,20 @@ import { withPluginApi } from 'discourse/lib/plugin-api';
 
 function initialize(api) {
   api.addPostSmallActionIcon('assigned','user-plus');
+
+  api.decorateWidget('post-contents:after-cooked', dec => {
+    if (dec.attrs.post_number === 1) {
+      const postModel = dec.getModel();
+      if (postModel) {
+        const assignedToUser = postModel.get('topic.assigned_to_user');
+        if (assignedToUser) {
+          const html = I18n.t('discourse_assign.assign_html', assignedToUser);
+          //const topic = postModel.get('topic');
+          return dec.rawHtml(html);
+        }
+      }
+    }
+  });
 };
 
 export default {

config/locales/client.en.yml

@@ -3,6 +3,7 @@ en:
     action_codes:
       assigned: "assigned"
     discourse_assign:
+      assign_html: "<p class='assigned-to'>Assigned to: @{{username}}</p>"
       assign_notification: "<i title='assigned' class='fa fa-user-plus'></i><p><span>{{username}}</span> {{description}}</p>"
       assign:
         title: "Assign"

plugin.rb

@@ -66,6 +66,38 @@ after_initialize do
       render json: success_json
     end
 
+    require_dependency 'topic_view_serializer'
+    class ::TopicViewSerializer
+      attributes :assigned_to_user
+
+      def assigned_to_user
+        if user = User.find_by(id: assigned_to_user_id)
+
+          assigned_at = TopicCustomField.where(
+            topic_id: object.topic.id,
+            name: "assigned_to_id"
+          ).pluck(:created_at).first
+
+          {
+            username: user.username,
+            name: user.name,
+            avatar_template: user.avatar_template,
+            assigned_at: assigned_at
+          }
+        end
+      end
+
+      def include_assigned_to_user?
+        assigned_to_user_id
+      end
+
+      def assigned_to_user_id
+        id = object.topic.custom_fields["assigned_to_id"]
+        # a bit messy but race conditions can give us an array here, avoid
+        id && id.to_i rescue nil
+      end
+    end
+
     DiscourseAssign::Engine.routes.draw do
       put "/assign" => "assign#assign"
     end