Items can be added to model dynamically.

formats/jsonparser.cpp

@@ -0,0 +1,58 @@
+#include "jsonparser.h"
+
+#include <QJsonArray>
+#include <QJsonObject>
+
+#include "../model/tablemodel.h"
+
+QList<QHash<int, QVariant>> JsonParser::toItemValuesList(const QByteArray& jsonData,
+                                                         const QString& objectName) {
+  QList<QHash<int, QVariant>> result;
+
+  if (jsonData.isEmpty()) {
+    return result;
+  }
+
+  QJsonArray itemArray = extractItemArray(jsonData, objectName);
+
+  foreach (QJsonValue value, itemArray) {
+    QJsonObject itemJsonObject  = value.toObject();
+    QHash<int, QVariant> values = jsonObjectToItemValues(itemJsonObject);
+    result.append(values);
+  }
+  return result;
+}
+
+QHash<int, QVariant> JsonParser::jsonObjectToItemValues(const QJsonObject& itemJsonObject) {
+  QHash<int, QVariant> values;
+
+  // TODO make this more generic (by reading from model meta data)
+  values[TableModel::NameRole] =
+      itemJsonObject[TableModel::ROLE_NAMES.value(TableModel::NameRole)].toString();
+  values[TableModel::DescriptionRole] =
+      itemJsonObject[TableModel::ROLE_NAMES.value(TableModel::DescriptionRole)].toString();
+  values[TableModel::InfoRole] =
+      itemJsonObject[TableModel::ROLE_NAMES.value(TableModel::InfoRole)].toString();
+  values[TableModel::AmountRole] =
+      itemJsonObject[TableModel::ROLE_NAMES.value(TableModel::AmountRole)].toInt();
+  values[TableModel::FactorRole] =
+      itemJsonObject[TableModel::ROLE_NAMES.value(TableModel::FactorRole)].toDouble();
+
+  return values;
+}
+
+JsonParser::JsonParser() {}
+
+QJsonArray JsonParser::extractItemArray(const QByteArray& jsonData, const QString& objectName) {
+  QJsonDocument doc = QJsonDocument::fromJson(jsonData);
+  QJsonArray itemArray;
+  if (objectName.isEmpty()) {
+    itemArray = doc.array();
+
+  } else {
+    QJsonObject rootObject = doc.object();
+    itemArray              = rootObject.value(QString("items")).toArray();
+  }
+
+  return itemArray;
+}