Fix: Correctly setting child visited state for Flipcard items (ADAPT-…

…12310) (#76)

js/FlipcardModel.js

@@ -1,4 +1,5 @@
 import ItemsComponentModel from 'core/js/models/itemsComponentModel';
+import logging from 'core/js/logging';
 
 export default class FlipcardModel extends ItemsComponentModel {
 
@@ -9,8 +10,13 @@ export default class FlipcardModel extends ItemsComponentModel {
 
  // This function will set the visited status for particular flipcard item.
  setVisited(index) {
- const item = this.get('_items')[index];
- item._isVisited = true;
+ const child = this.getChildren()?.models?.[index] || null;
+ if (!child) {
+ logging.warn(`Flipcard item not found for index '${index}'`);
+ return;
+ }
+
+ child.set('_isVisited', true);
  this.checkCompletionStatus();
  }
 }