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/generalsortfiltermodel.cpp

@@ -23,6 +23,11 @@ QItemSelection GeneralSortFilterModel::findItems(const QString& text) const {
   return result;
 }
 
+QByteArray GeneralSortFilterModel::jsonDataForServer(const QModelIndex& proxyIndex) {
+  const QModelIndex sourceIndex = mapToSource(proxyIndex);
+  return m_tableModel->jsonDataForServer(sourceIndex);
+}
+
 void GeneralSortFilterModel::appendItems(const QByteArray& jsonDoc) {
   m_tableModel->appendItems(jsonDoc);
 }

model/generalsortfiltermodel.h

@@ -18,6 +18,8 @@ class GeneralSortFilterModel : public QSortFilterProxyModel {
    */
   QItemSelection findItems(const QString& text) const;
 
+  QByteArray jsonDataForServer(const QModelIndex& proxyIndex);
+
  public slots:
   void appendItems(const QByteArray& jsonDoc);
   bool removeRows(int firstRow, int nRows, const QModelIndex& parentIndex = QModelIndex()) override;

model/metadata.h

@@ -15,9 +15,11 @@ enum UserRoles {
   InfoRole,
   AmountRole,
   FactorRole,
-  /// helper roles
+  /// Non user facing
+  IdRole,
+  /// read only roles
   ToStringRole,
-  IdRole
+  ToJsonRole
 };
 
 static UserRoles DEFAULT_ROLE = NameRole;

model/tablemodel.cpp

@@ -86,6 +86,8 @@ QVariant TableModel::data(const QModelIndex& index, int role) const {
       return m_items.at(row)->data(role);
     case ToStringRole:
       return m_items.at(row)->toString();
+    case ToJsonRole:
+      return m_items.at(row)->toJsonObject();
   }
 
   return QVariant();
@@ -169,6 +171,15 @@ QList<QStringList> TableModel::getItemsAsStringLists() const {
   return result;
 }
 
+// TODO use item selection as parameter to wrap multiple items into JSON data structure
+QByteArray TableModel::jsonDataForServer(const QModelIndex& currentIndex) const {
+  const QJsonObject itemObject = data(currentIndex, ToJsonRole).toJsonObject();
+  QJsonObject rootObject;
+  rootObject.insert("item", itemObject);
+  const QJsonDocument jsonDoc(rootObject);
+  return jsonDoc.toJson(QJsonDocument::Compact);
+}
+
 bool TableModel::removeRows(int firstRow, int nRows, const QModelIndex& parentIndex) {
   if (parentIndex != QModelIndex()) {
     qWarning() << "Removing of child rows is not supported yet!";

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;