Show error dialog for failed SQL queries

src/core/sqlquery.cpp

@@ -0,0 +1,66 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2021, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "config.h"
+
+#include <QSqlQuery>
+#include <QMap>
+#include <QVariant>
+#include <QString>
+#include <QVariantList>
+
+#include "sqlquery.h"
+
+void SqlQuery::BindValue(const QString &placeholder, const QVariant &value) {
+
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+  bound_values_.insert(placeholder, value);
+#endif
+
+  bindValue(placeholder, value);
+
+}
+
+bool SqlQuery::Exec() {
+
+  bool success = exec();
+  last_query_ = executedQuery();
+
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+  for (QMap<QString, QVariant>::const_iterator it = bound_values_.begin(); it != bound_values_.end(); ++it) {
+    last_query_.replace(it.key(), it.value().toString());
+  }
+  bound_values_.clear();
+#else
+  QMapIterator<QString, QVariant> it(boundValues());
+  while (it.hasNext()) {
+    it.next();
+    last_query_.replace(it.key(), it.value().toString());
+  }
+#endif
+
+  return success;
+
+}
+
+QString SqlQuery::LastQuery() const {
+
+  return last_query_;
+
+}