Filter filename in QDialog

[Peggy]

Hello everyone,

I am trying to set a filter on the name of the files which are being shown by clicking on Open menu.
From one side I saved all the files on a directory. But on the other hand I saved the name of some of them in the Database. Now I want to have a QDialog which shows only the files, that their names existed already in Database. My problem is I want to set a filter that can filter my files. I don't know how I can manage this filter.

I am looking forward for some tips.

[broadpeak]

Get the filenames from your database into a QStringList.
And pass this stringlist into this method:
void QFileDialog::setNameFilters ( const QStringList & filters )

[gRicky]

How to filter the name in a QFileDialog
@

    QDate date = QDate::currentDate();
    QString dateString = date.toString("yyyy-MM-dd");

    QTime time = QTime::currentTime();
    QString timeString = time.toString();

    QFileDialog *fd  = new QFileDialog;
    fd->selectFile&#40;dateString + "_" + timeString + "_log.csv"&#41;; //<- sets the name of the file on the QFile dialog

    fd->setFilters(QStringList() << "*.csv"); //<- sets the filter of the extention file
    if (fd->exec&#40;&#41;) //<- show the QFileDialog
        m_logFileName = fd->selectedFiles()[0]; //+ fd->selectedFilter(); // <- gets teh first of the file selected by the user
    qDebug() << m_logFileName; //<- show into the debug window the selected filename

@

I hope this code help you to understand.

[Peggy]

Hello broadpeak,

I tried it but it does not work :( For example I have 4 files which have been saved in temp directory and just the name of two of them in the database (test_pro1,test_pro2). The code is as following:
@
QFileDialog dialog(this);
QStringList lst;
lst<<"test_pro1"<<"test_pro2";
dialog.setFilters(lst);
dialog.getOpenFileName(this,tr("Open the files"),QDir("temp").absolutePath());
@

I currently read that by overriding proxymodel on QDir, the filtering would be possible. But it is not also exactly what I am looking for:(

[broadpeak]

[quote author="Peggy" date="1350649293"]
dialog.setFilters(lst);
[/quote]

I think, setNameFilters will be your friend (and not the setFilters!)

[gRicky]

I think it too.

[Peggy]

I tried setNameFilters and the tip from gRicky. It does not work as I want. It showed all the files in the directory which I don't want.

[KA51O]

How about you show us your new code?

[Peggy]

Here is my code:
@
QFileDialog* dialog = new QFileDialog;
QStringList dbLst;
dbLst<<"project1"<<"project2";
for (QStringList::iterator it = dbLst.begin();it != dbLst.end(); it++){
QString str = it;
}
dialog->setFilters(QStringList()<< ".cst");
dialog->setDirectory(QDir("Template").absolutePath());
dialog>exec();

@

I used the Iterator to see the content of my list,which of course is in this example is not useful.

[KA51O]

@
QFileDialog* dialog = new QFileDialog;
QStringList dbLst;
dbLst<<"project1"<<"project2";

// whats this for-loop for ?

    for (QStringList::iterator it = dbLst.begin();it != dbLst.end(); it++){
        QString str = *it;
    }

//you are not using setNameFilters and also you are handing over a stringlist containing only ".cst" as the parameter. I thought you were looking for names containing "project1" or "project2".
dialog->setFilters(QStringList()<< ".cst");
dialog->setDirectory(QDir("Template").absolutePath());
dialog>exec();

@

Please have a look at "the documentation":http://qt-project.org/doc/qt-4.8/qfiledialog.html#setNameFilters and think about want you want to achieve before wildly copying code together.

[Peggy]

I think what I am looking for is hardly being solved by setting filter(at least I can not solve it with filter). I will write an extra class with inherits QDialog and try to write some methods to solve my problem.

Thank you all for taking your time to help me:)

[Peggy]

Hello KA510,

You are right with *.cst(my fault). But it does not filter the name I am looking for it either. I may understand the filter in qt not correctly. By clicking on open menu, I was looking for to have a list of files which were filtered according to the existing list in database. So if I have 4 files in the directory which only two of them existed in database I wanted to show just this two files except the 4 files.

[butterface]

Try this one

@
QFileDialog* dialog = new QFileDialog;
QStringList dbLst;
dbLst<<"(project1.cst)"<<"(project2.cst)";
dialog->setFilters(dbLst);
dialog->setDirectory(QDir("Template").absolutePath());
dialog->exec();
@

EDIT
or maybe you need this
@
QFileDialog* dialog = new QFileDialog;
dialog->setNameFilter(QString("My Files (project1.cst project2.cst)"));
dialog->setDirectory(QDir("Template").absolutePath());
dialog->exec();
@

[butterface]

AFAIK and without RTFM the name of the actual file (project1.cst) or the pattern (*.exe) must be enclosed by brackets.