Encoding in the QTableView

ro12man3

You really have to provide more info that that :)
if you insert qDebug() << "f1=" << fields[0] << "f2=" << fields[1];
does it read in the data correctly ? this is critical.

Yes, I can extract this values. I tested that in QMessageBox.
More info... http://rghost.ru/7wFZPWC4v This is the project.
Download link(http://rghost.ru/download/7wFZPWC4v/ccf2cf56d3bbd353e8db12f377907d858f261e23/ccf2cf56d3bbd353e8db12f377907d858f261e23/myfirstviewEDITED.rar)

It's not very difficult code structure, I don't know why it's not working.

SGaist

Hi,

Because it's not buildable as is.

MyDelegate::MyDelegate(QObject *parent)
    : QStyledItemDelegate(parent)
{
    QString line;
    QFile file("1.txt");
    if(file.open(QIODevice::ReadOnly)) {
        QTextStream in(&file);
        while(!in.atEnd()) {
            QString line = in.readLine(); // get a line from file
            QStringList fields = line.split(","); // KEY point. we ask it to split the text at "," to a list
            hash[fields[0].toInt()] = fields[1] ; // store name under key
        }
    } else {
        qDebug() << "Error opening file";
    }
}

// this is the key delegate function!
QString MyDelegate::displayText(const QVariant& value, const QLocale& locale) const {
     return hash.value(value.toInt());
}

[edit: code cleanup SGaist]

mrjj

oh a tad to late :)
https://www.dropbox.com/s/3ajogwsoc7n1zjg/myfirstviewEDITED_hash.zip?dl=0

SGaist

Note that the build problem isn't with the delegate but with the MainWindow missing slot implementation.

@mrjj :-D

ro12man3

@mrjj @SGaist oooohhh guys, thank you!! You are amazing!!!

It's working. !!!

The problem is SOLVED! THANK YOU VERY MUCH!!

ro12man3

@mrjj @SGaist
I started to work and I found one bag.
My table is:
Roberto
Jackson
1002
1
And that's my txt file:
1002,Hello
1,How are you
So the result in the table is
Roberto
Jackson
Hello
How are you

It's good. Correct work.
But if I change 1002 to 10--02 then all const values in the table will become like a second value for 10--02. The result will become:
Hello
Hello
Hello
How are you
You can see that, just edit in table Maria to 10--02 and add 10--02 to txt file. What is that?

mrjj

@ro12man3 said:

10--02

hi
If you change the first field in file to 10--02
it it no longer a valid integer.
Our hash is Int, String
so that mean use int as key and get back string
when we read "10--02", and say toInt() we get 0 or something undefined.

If you need to use a key that is not really a integer. like 10--02, then
you must change the hash to be Qstring, QString and NOT use toInt() when inserting
into hash.
So make sure your text format fits the Hash or strange things will happen :)

ro12man3

@mrjj Ok. It was

// In .h file:
QHash<int, QString> hash;
......
  hash[fields[0].toInt()] = fields[1] ;
......
// In .cpp file:
QString mapped = hash.value(value.toInt());

After editing it's:

// In .h file:
QHash<QString, QString> hash;
......
  hash[fields[0]] = fields[1] ;
......
// In .cpp file:
QString mapped = hash.value(value);

Is it correct?

mrjj

hi
yes, seems fine. good work.
i think you might need
QString mapped = hash.value(value.toString);
as value is variant and hash wants string.

ro12man3

@mrjj Wooow I'm so happy, really :D Thank you :) I will study and study and study :)