Retrieving the JSON data of the current index to send to the server through the proxy model. Sending this data happens by triggering the core.

model/tablemodel.h

@@ -38,6 +38,8 @@ class TableModel : public QAbstractTableModel {
   QJsonDocument getAllItemsAsJsonDoc() const;
   QList<QStringList> getItemsAsStringLists() const;
 
+  QByteArray jsonDataForServer(const QModelIndex& currentIndex) const;
+
  public slots:
   // bool insertRows(int position, int rows, const QModelIndex& parentIndex = QModelIndex())
   // override;