QSqlTableModel Filter

Saviz

I have a SQLite data base that I am displaying with the help of "QSqlTableModel" and "QTabelView". Now I am trying to set a filter for my model.

Here is the code:

void DataBase::method_set_filter(const QString &filterArgument)
{
    QString command(
                "'%1' LIKE '%%2%'"
                );

    command = command.arg(

                // 1
                DataBase::COLUMN_FIRSTNAME, // Stored as static const in my class
                // 2
                filterArgument
                );

    qDebug() << command;
    qDebug() << tableModel->lastError();


    tableModel->setFilter(command);
    tableModel->select();
}

Here is how my table looks before setting filter:

If I try to search for the first name of "Jacob", then it will show me nothing:
Table after.png

What my debug statements show:

"'First name' LIKE '%Jacob%'"
QSqlError("", "", "")

Why is this happening?

Pl45m4

@Saviz said in QSqlTableModel Filter:

Why is this happening?

Because

"'%1' LIKE '%%2%'"

What do you get with
" '%1' LIKE '%2'"
as command?

It doesnt seem to resolve the wildcards.

JonB

@Saviz

bool QSqlTableModel::select() returns a bool so that you can test it.
tableModel->lastError() won't return anything immediately after you have set QString command, that is just a string variable assignment. Examine it after the select() returns false.
Don't name database columns with spaces in them, it's just asking for trouble, because...
...Most importantly: 'First name' LIKE '%Jacob%' where do you ever get that SQLite uses '...' (single quotes) to enclose a column name with space in it? It doesn't. Consequently filtering with most strings, include Jacob, will always return no rows; if you try filtering by, say, rst it will return every row :)

Pl45m4

@JonB said in QSqlTableModel Filter:

'First name' LIKE '%Jacob%'

lol, was checking the condition and haven't noticed that, because of the use of DataBase::COLUMN_FIRSTNAME