QSqlError("1045", "QMYSQ") Cannot edit table with QSqlTableModel

[Shellcpp73]

But I have password to this user and in mysql console I can login but to here when i try to change data in DB with QSqlTablemodel

QSqlError("1045", "QMYSQL: Невозможно соединиться", "Access denied for user 'myuser'@'localhost' (using password: NO)")

entity.connectToDb();
if(entity.db.open())

{

   // entity.querymodel->setQuery("SELECT * FROM telcom");
   // ui->tableView->setModel(entity.querymodel);
  entity.model = new QSqlTableModel(this,entity.db);
  entity.model->setEditStrategy(QSqlTableModel::OnManualSubmit);
  entity.model->setTable("telcom");
  entity.model->select();
  this->ui->tableView->setModel(entity.model);

}

I have password for 'myuser'@'localhost'. QSqldriver always tries to connect with password NO but if set a password NO in mysql for 'myuser'@'localhost' I have other error message "query does not exixst" so i think that's impossible to connect to phpmyadmin DB with no password. My local user have all needed privileges.

[JonB]

@Shellcpp73
Hello and welcome.

You show nothing about how you connect to the database, which is where you specify a username and a password. It does not sound as though you are setting any password. That happens before you send it a query, and just before you open it. Where is your QSqlDatabase instance code, prior to calling QSqlDatabase::open(), or maybe you call bool QSqlDatabase::open(const QString &user, const QString &password)?

[Shellcpp73]

@JonB I have fuction in Entiry class
void Entity::connectToDb()
{

while(!db.open())
{
db.setHostName("localhost");
db.setUserName("username");
db.setPassword("qwerty123");
db.setDatabaseName("Main");

    qDebug() << "!!!!!!!!";
}

}

[JonB]

@Shellcpp73
qDebug() << db.lastError() ?

And what you have is odd. I do not know whether it even goes into the while() body. Can't you do normal:

db.setHostName("localhost");
db.setUserName("username");
db.setPassword("qwerty123");
db.setDatabaseName("Main");

if (!db.open())
{
    qDebug() << db.lastError();
}

Further it looks like your db/entity.db is a persistent QSqlDatabase db member variable. This may not be related to your error, but Qt asks you not to do this. See https://doc.qt.io/qt-5/qsqldatabase.html#details and use local variable QSqlDatabase db = QSqlDatabase::database(); when you need it.

[Shellcpp73]

I'm ok with oping to data base and my query works well BUT my QSqlTablemodel don't save changes in the data base and I have error "Access denied for user 'myuser'@'localhost' (using password: NO)") with QSqlTablemodel

[Christian Ehrlicher]

@Shellcpp73 said in QSqlError("1045", "QMYSQ") Cannot edit table with QSqlTableModel:

"Access denied for user 'myuser'@'localhost'

Then fix your access rights for the user in the database or use another db-login which has write rights.

[Shellcpp73]

@Christian-Ehrlicher ohhhh I tried many times "myuser" has all needed rights and i have tried with root user and also i have same mistake , I can login to phpmyadmin with there users and make changes but not form QSqlTableModel ((( I don't know why QSQL driver always trying to connect with password NO.

[JonB]

@Shellcpp73
I would check how (and who) phpmyadmin is doing it then.

[Christian Ehrlicher]

It's or sure no problem of Qt or the QSqlTableModel - fix your access rights.