QTableview how to save checkbox value c++ - c++

Question

I am referring to the code in this answer and this to create a tableview with checkboxes.
I am trying to create a table, that shows a list of student in my database with checkbox alongside.
Now that i have done that,
Question is:
How do I save the value of the checkboxes to my sql database?
How do I present the initial state of checkboxes from the value in database? (Eg: 1 for checkbox is checked, 0 for unchecked)
(I am open to any ways of implementing the above requirement, so feel free to provide your solution other than the codes below)
Here is my code:
mysqlquerymodel.h
class MySqlQueryModel : public QSqlQueryModel
{
Q_OBJECT
public:
explicit MySqlQueryModel(QObject *parent = 0);
Qt::ItemFlags flags(const QModelIndex & index) const;
QVariant data(const QModelIndex & index, int role) const;
bool setData(const QModelIndex & index, const QVariant & value, int role);
QMap<int, Qt::CheckState> check_state_map;
};
mysqlquerymodel.cpp (ignore the qdebug its for checking)
MySqlQueryModel::MySqlQueryModel(QObject *parent) : QSqlQueryModel(parent), check_state_map()
{
}
Qt::ItemFlags MySqlQueryModel::flags(const QModelIndex & index) const
{
if (!index.isValid()) {
qDebug()<<("item1");
return nullptr;
}
if (index.column() == 2){
qDebug()<<("item2");
return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsUserCheckable;
}
qDebug()<<("item3");
return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
}
QVariant MySqlQueryModel::data(const QModelIndex & index, int role) const
{
if (!index.isValid()){
qDebug()<<("data1");
return QVariant();
}
if(role== Qt::CheckStateRole)
{
if(index.column() == 2)
{
if (check_state_map.contains(index.row())){
qDebug()<<("data2");
return check_state_map[index.row()] == Qt::Checked ? Qt::Checked : Qt::Unchecked;
}
qDebug()<<("data3");
return Qt::Unchecked;
}
}
return QSqlQueryModel::data(index,role);//!!!!!
}
bool MySqlQueryModel::setData(const QModelIndex & index, const QVariant & value, int role)
{
if(!index.isValid()){
qDebug()<<("set1");
return false;
}
if (role == Qt::CheckStateRole && index.column() == 2)
{
qDebug()<<("set2");
check_state_map[index.row()] = (value == Qt::Checked ? Qt::Checked : Qt::Unchecked);
}
qDebug()<<("set3");
return true;
}
I am trying to implement it in tawindow.ui
tawindow.cpp
//load table
void TAWindow::on_loadBtn_clicked(){
conn.connOpen();
QSqlQuery* qry = new QSqlQuery(conn.mydb);
qry->prepare("select * from students");
qry->exec();
tablemodel->setQuery(*qry);
ui->tableView->setModel(tablemodel);
conn.connClose();
}
//save table and update database
void TAWindow::on_saveBtn_clicked()
{
}
Thanks in advance.

Answer 1

you can use ui->combobox->ischecked(); to check if the comboBox is checked or not.
and to store the state of the comboBox you can use a variable.
Something like this :
QString var;
if(ui->comboBox->isChecked())
{
var = "Checked";
}
else
{
var = "Not Checked";
}
and store var in you database.