handling closing posts

backend/models/ForumPost.js

@@ -72,6 +72,18 @@ const ForumPost = sequelize.define('ForumPost', {
   deletedAt: {
     type: DataTypes.DATE,
     allowNull: true
+  },
+  closedBy: {
+    type: DataTypes.UUID,
+    allowNull: true,
+    references: {
+      model: 'Users',
+      key: 'id'
+    }
+  },
+  closedAt: {
+    type: DataTypes.DATE,
+    allowNull: true
   }
 });