[db error] mainwindow.cpp

#include "mainwindow.h"
#include "./ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    db = QSqlDatabase::addDatabase("QSQLITE");
    db.setDatabaseName("../finances.db");

    if (db.isOpen()) {
        model = new QSqlTableModel(this, db);
        model->setTable("Finances");
        model->select();
        ui->tableView->setModel(model);
    } else ui->label->setText("Error: " + QString(db.lastError().databaseText()));
}

MainWindow::~MainWindow() { delete ui; }