How To Change data (setData) in EditableModel child on QSqlQueryModel ?
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this is mainwindow:
#include "mainwindow.h" #include "ui_mainwindow.h" #include "editablemodel.h" #include "QSqlQuery" #include "QDebug" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); func(); } MainWindow::~MainWindow() { delete ui; } void MainWindow::refresh(){ ui->ccc->setText("start"); } void MainWindow::func(){ amdb = QSqlDatabase::database("connect"); if(amdb.isOpen()){ qDebug() << amdb.databaseName(); }else{ qDebug() << "NO"; } QSqlQuery query(amdb); query.prepare("SELECT * FROM valuta"); query.exec(); model->setQuery(query); model->setHeaderData(0, Qt::Horizontal, tr("იდი")); model->setHeaderData(1, Qt::Horizontal, tr("ვალუტის სახელი")); model->setHeaderData(2, Qt::Horizontal, tr("ფუნქცია")); ui->tableView->setModel(model); ui->tableView->verticalHeader()->hide(); ui->tableView->setColumnWidth(1,170); } void MainWindow::on_pushButton_clicked() { qDebug() << ui->ccc->text(); }this ediatblemodel:
#include "editablemodel.h" #include "QSqlQueryModel" #include "QSqlQuery" #include "mainwindow.h" #include "QDebug" EditAbleModel::EditAbleModel(QObject *parent) : QSqlQueryModel(parent) { } Qt::ItemFlags EditAbleModel::flags( const QModelIndex &index) const { Qt::ItemFlags flags = QSqlQueryModel::flags(index); if (index.column() == 0 || index.column() == 2) flags |= Qt::ItemIsEditable; return flags; } bool EditAbleModel::setData(const QModelIndex &index, const QVariant &value, int /* role */) { if (index.column() < 1 || index.column() > 2) return false; QModelIndex primaryKeyIndex = QSqlQueryModel::index(index.row(),0); int id = data(primaryKeyIndex).toInt(); // qDebug() << index.row() << " " << index.column() << "aaaa"<<endl; bool ok; if (index.column() == 1) { ok = setFirstName(id, value.toString()); } else { ok = setLastName(id, value.toString()); } // MainWindow* w = new MainWindow(); // emit run(); // connect(this,SIGNAL(run()),w,SLOT(refresh())); return ok; } void EditAbleModel::refresh() { **DONT NEED THIS!!!!** } bool EditAbleModel::setFirstName(int personId, const QString &firstName) { QSqlQuery query; query.prepare("update valuta set main = '1' where uid = '4'"); query.addBindValue(firstName); query.addBindValue(personId); return query.exec(); } bool EditAbleModel::setLastName(int personId, const QString &lastName) { QSqlQuery query(amdb); qDebug() << personId << " " << lastName << endl; int lst = lastName.toInt(); query.prepare("update valuta set main = :one where uid = :two "); query.bindValue(":one",lst); query.bindValue(":two",personId); return query.exec(); }this main.cpp:
#include "mainwindow.h" #include <QApplication> #include "QSqlDatabase" #include "QFileInfo" #include "QDebug" QSqlDatabase amdb; int main(int argc, char *argv[]) { QApplication a(argc, argv); amdb = QSqlDatabase::addDatabase("QSQLITE", "connect"); amdb.setDatabaseName("C:/Users/tleladze/Desktop/valuta/VALUTA.sqlite"); amdb.open(); MainWindow w; w.show(); return a.exec(); } -
@Taz742
Hi
Its a bit unclear what actual error is.
It does save new data to database but the view is not showing it ?
Or which part is not working for you ? -
Ok, maybe you need to use the
http://doc.qt.io/qt-5/qabstractitemmodel.html#rowsAboutToBeRemoved
or some other function that fits the action you do to the data.Currently, you just change the database behind its back
so I guess what is wrong is that it cannot know that. :) -
Ok, maybe you need to use the
http://doc.qt.io/qt-5/qabstractitemmodel.html#rowsAboutToBeRemoved
or some other function that fits the action you do to the data.Currently, you just change the database behind its back
so I guess what is wrong is that it cannot know that. :) -
QAbstractItemModel is the lowest base class of QSqlQueryModel.
Interested in AI ? www.idiap.ch
Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct -
I solved my problem.
QSqlQuery query; query.prepare("SELECT * FROM VALUTA"); query.exec(); ui->tableWidget->setColumnCount(3); ui->tableWidget->setRowCount(8); ui->tableWidget->setHorizontalHeaderLabels(QStringList() << "იდ" << "სახელი" << "კურსი"); ui->tableWidget->verticalHeader()->hide(); int i = 0; while(query.next()){ int j = 0; while(j < 3){ QTableWidgetItem* itm = new QTableWidgetItem(query.value(j).toString()); ui->tableWidget->setItem(i,j,itm); if(j == 0){ itm->setFlags(itm->flags() ^ Qt::ItemIsEditable); // **DISABLE EDIT** } j++; } i++; }But the concrete problem has not been reached.
I write as resolved?Do what you want.
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I solved my problem.
QSqlQuery query; query.prepare("SELECT * FROM VALUTA"); query.exec(); ui->tableWidget->setColumnCount(3); ui->tableWidget->setRowCount(8); ui->tableWidget->setHorizontalHeaderLabels(QStringList() << "იდ" << "სახელი" << "კურსი"); ui->tableWidget->verticalHeader()->hide(); int i = 0; while(query.next()){ int j = 0; while(j < 3){ QTableWidgetItem* itm = new QTableWidgetItem(query.value(j).toString()); ui->tableWidget->setItem(i,j,itm); if(j == 0){ itm->setFlags(itm->flags() ^ Qt::ItemIsEditable); // **DISABLE EDIT** } j++; } i++; }But the concrete problem has not been reached.
I write as resolved? -
Hi,
Did you forget to emit dataChanged() signal after value updated?
This signal is must if you need to reflect the changes on UI. -
Hi,
Did you forget to emit dataChanged() signal after value updated?
This signal is must if you need to reflect the changes on UI. -
Hi. @RajeeshRaveendran
YES, I've seen this signal.
But UI->, update, when it changes, model-> setData doing nothing. -
Hi Taz,
I did not get you. Let me explain a little more. Simply you should modify your model class to
bool EditAbleModel::setData(const QModelIndex &index, const QVariant &value, int /* role */)
{
/// update the data to database/internal data storage
emit dataChanged(); /// So that UI (QML) know the change occurred in background and query the new value by calling data() method to update UI.
}QVariant EditAbleModel::data(const QModelIndex &index, int role)
{
/// return your data as per custom db.
} -
Hi Taz,
I did not get you. Let me explain a little more. Simply you should modify your model class to
bool EditAbleModel::setData(const QModelIndex &index, const QVariant &value, int /* role */)
{
/// update the data to database/internal data storage
emit dataChanged(); /// So that UI (QML) know the change occurred in background and query the new value by calling data() method to update UI.
}QVariant EditAbleModel::data(const QModelIndex &index, int role)
{
/// return your data as per custom db.
}@RajeeshRaveendran
Now I'm busy with something else and definitely I'll see into your answer.
thank for reply, and sorry english :))
