Problem with QVariant, struct and SQLite

joonne

Hi,

I have tried to search for an answer but didn't manage to get this work, and I don't know if this is even supposed to work. I am trying to insert my own struct as BLOB to SQLite database and the compile is ok but it is not working still.

This is what I have tried:

header:

@struct serieinfo {
int repeats_;
double weights_;
};

Q_DECLARE_METATYPE(serieinfo)@

source:

@
serieinfo temp1;
temp1.repeats_ = 12;
temp1.weights_ = 70;

QVariant v;
v.setValue(temp1);

if (db.isOpen()) {

    QSqlQuery query;

    query.prepare(QString("INSERT INTO TEST VALUES(NULL,?,?,?,?,?,?,?)"));

    query.addBindValue("Bench Press");
    query.addBindValue(v);
    query.addBindValue(v);
    query.addBindValue(v);
    query.addBindValue(v);
    query.addBindValue(v);
    query.addBindValue(v);

    ret = query.exec&#40;&#41;;

    qDebug() << query.lastError();

}@

The SQLite table is created like this and it's working fine:

@
QSqlQuery query;
ret = query.exec(QString("create table '%1'"
"(id integer primary key, "
"excercisename varchar(50), "
"serie1 blob, "
"serie2 blob, "
"serie3 blob, "
"serie4 blob, "
"serie5 blob, "
"serie6 blob)").arg(workoutname));
@

The outcome is that I have the table created but there is only "Bench Press". I am developing with Qt Creator on Windows 8. What am I doing wrong here? Thanks in advance!

tomasl

Hi,

I think your problem is that you try to bind a single value to multiple places in your query, which is not allowed.

http://qt-project.org/doc/qt-5/qsqlquery.html#bindValue

Tomas