Getting an image from mysql database (as BLOB field) through subclassed QSqlQueryMode

[MarkoSan]

Couple of things:

- in order to be able to use this class as a QQuickImageProvider, it needs to have a "is-a" relation ship, i.e. publically inherit from QQuickImageProvider
- in data() it doesn't make sense to use the role as given to query the base class, after all these roles will most often be your custom roles and have no meaning for the base class
- you are missing the roleNames() override that returns the mapping of role names (used in QML) to role numbers (using in the C++ API).

Cheers,
_

Well, class is publicly inherited from QQuickImageProvider:

class UePeopleModel : public QSqlQueryModel, QQuickImageProvider

class UePeopleModel : public QSqlQueryModel, QQuickImageProvider

To copy to clipboard, switch view to plain text mode 

I've upgraded function data(), is now ok:

QVariant UePeopleModel::data(const QModelIndex &index,
                             int role) const
{
    QVariant value=QSqlQueryModel::data(index,
                                        role);
    if(value.isValid())
    {
        switch(role)
        {
            case ueRoleName:
            {
                return value.toString();
            }   // case
 
            case ueRoleImage:
            {
                return QString::number(index.row());
            }   // case
 
            default:
                value=QVariant();
        }   // switch
    }   // if
 
    return value;
}   // data

QVariant UePeopleModel::data(const QModelIndex &index,
                             int role) const
{
    QVariant value=QSqlQueryModel::data(index,
                                        role);
    if(value.isValid())
    {
        switch(role)
        {
            case ueRoleName:
            {
                return value.toString();
            }   // case

            case ueRoleImage:
            {
                return QString::number(index.row());
            }   // case

            default:
                value=QVariant();
        }   // switch
    }   // if

    return value;
}   // data

To copy to clipboard, switch view to plain text mode 

But what do I have to put inside method UePeopleModel::image?

Sincerely yours,
Marko