How to change the color of the row in the Sqlite table?

[isan]

@mrjj Hi, I want to record absenteeism in the Sqlite database
And I want to set red/black/gray/... (just for difference) rows in table for holiday

[mrjj]

@isan
Hi
That is actually done by the view/widget where you show the data.
You can do it like

void setRowBackground(const QBrush& brush, QAbstractItemModel* model, int row, const QModelIndex& parent = QModelIndex() ) {
  if(!model || row < 0) {
    return;
  }
  if(row >= model->rowCount(parent)) {
    return;
  }
  if(parent.isValid()) {
    if(parent.model() != model) {
      return;
    }
  }
  for(int i = 0; i < model->columnCount(parent); ++i) {
    model->setData(model->index(row, i, parent), brush, Qt::BackgroundRole);
  }
}

credits to @VRonin from
https://forum.qt.io/topic/75151/qtablewidget-set-specific-row-s-color/5

[VRonin]

@mrjj That method only works if the model supports multiple roles (i.e. QSql*Models are a no go). I still didn't understand where OP wants the color to appear. Is it in a custom Qt application or in a completely unrelated "SqliteBrowser on Windows"?

[mrjj]

@VRonin
Hi.
thank you for clarification.
Also unclear to me, however since he shows
code with QSqlQuery , i assume he will have a view/widget to show the data in.

[isan]

@mrjj yes I use tableView to show QSqlite Table
after this

ui->tableView->setModel(model);

I should use setRowBackground function?
and what are the inputs of function?

[mrjj]

@isan
hi
its actually the Qt::BackgroundRole
that is key.
the setRowBackground is just a helper function VRonin wrote.

• and what are the input function?
  Im not sure what you mean by this ?
  However, if you mean save back to the database, that's not really possible.
  Unless you change the table definition to include a QColor or something like that.

[isan]

@mrjj my mean : what are QAbstractItemModel *model and const QModelIndex &parent
I do this and row color doesn't make change

QSqlQueryModel *model =new QSqlQueryModel();
        db1.setDatabaseName( DBn );
        if( !db1.open() )
        {
            qDebug() << db1.lastError();
            qDebug( "Failed to connect." );
        }
        else
            qDebug( "Connected to database!" );

        QSqlQuery  qry(db1);
        qry.prepare( "SELECT * FROM _"+Ms+"");
        qry.exec();
        model->setQuery(qry);
        ui->tableView->setModel(model);
        setRowBackground(QColor(250,0,0),ui->tableView->model(),1);

[VRonin]

@isan said in How to change the color of the row in the Sqlite table?:

setRowBackground(QColor(250,0,0),ui->tableView->model(),1);

@VRonin said in How to change the color of the row in the Sqlite table?:

That method only works if the model supports multiple roles (i.e. QSql*Models are a no go).

[isan]

@VRonin said in How to change the color of the row in the Sqlite table?:

That method only works if the model supports multiple roles (i.e. QSql*Models are a no go).

my model something like :

That method not work for this?
For example I want to set color for rows that have Thursday and Friday

[VRonin]

Check out this library: https://github.com/VSRonin/QtModelUtilities
In particular this example: https://github.com/VSRonin/QtModelUtilities/blob/1.0.0/examples/exam_RoleMaskProxyModel/exam_rolemaskhighlight.cpp

[isan]

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