libqt4json Documentation

Below is an example of how to use libqt4json

//------------------------------------------------------------------------------
#include <QObject>
#include <QDate>
#include <iostream>
#include <libqt4json.h>
//------------------------------------------------------------------------------
using libqt4json::CJson;
using namespace std;
//------------------------------------------------------------------------------
class CBirthDay : public QObject {
        Q_OBJECT
        Q_PROPERTY(int day READ getDay)
        Q_PROPERTY(QString monthName READ getMonthName);
        Q_PROPERTY(int year READ getYear);
        public:
                CBirthDay(QDate date) { this->date=date; }
                int getDay(void) { return date.day(); }
                QString getMonthName(void) { return QDate::longMonthName(date.month()); }
                int getMonth(void) { return date.month(); }
                int getYear(void) { return date.year(); }
        private:
                QDate date;
 };
//------------------------------------------------------------------------------ 
 class CPerson : public QObject {
        Q_OBJECT
        Q_PROPERTY(QString name READ getName)
        Q_PROPERTY(int age READ getAge);
        Q_PROPERTY(QObject* birthDay READ getBirthDay);
        public:
                CPerson(QString name, CBirthDay *birthDay) { this->name=name; this->birthDay=birthDay; }
                QString getName(void) { return name; }
                int getAge(void) { 
                        QDate curDate=QDate::currentDate();
                        int curYear=curDate.year();
                        int curMonth=curDate.month();
                        int curDay=curDate.day();
                        int age=curYear-birthDay->getYear();
                        if(curMonth < birthDay->getMonth() || (curMonth == birthDay->getMonth() && curDay < birthDay->getDay())) {
                                return age-1;
                        }
                        return age;
                }
                CBirthDay *getBirthDay(void) { return birthDay; } 
        private:
                QString name;
                CBirthDay *birthDay;
                
 };
 //------------------------------------------------------------------------------
 int main(int argc, char **argv) {
        CJson *json=new CJson();
        CPerson *parent1=new CPerson("Dad", new CBirthDay(QDate::fromString("07/04/1977", "dd/MM/yyyy")));
        CPerson *parent2=new CPerson("Mum", new CBirthDay(QDate::fromString("15/07/1977", "dd/MM/yyyy")));
        CPerson *child1=new CPerson("Cindy", new CBirthDay(QDate::fromString("01/10/2011", "dd/MM/yyyy")));
        QVariantMap family;
        QVariantList parents;
        QVariantList childs;
        
        parents.append(QVariant::fromValue((QObject *)parent1));
        parents.append(QVariant::fromValue((QObject *)parent2));
        
        childs.append(QVariant::fromValue((QObject *)child1));
        
        family.insert("parents", QVariant(parents));
        family.insert("childs", QVariant(childs));
        
        QString sJson=json->toString(QVariant(family));
        
        cout << QObject::tr("Generated json").toStdString() << ":" << endl;
        cout << sJson.toStdString();
        cout << endl;
        
        return 0;
}
//------------------------------------------------------------------------------

This will produce :

{
    "childs": [
        {
            "name": "Cindy",
            "age": 1,
            "birthDay": {
                "day": 1,
                "monthName": "octobre",
                "year": 2011
            }
        }
    ],
    "parents": [
        {
            "name": "Dad",
            "age": 35,
            "birthDay": {
                "day": 7,
                "monthName": "avril",
                "year": 1977
            }
        },
        {
            "name": "Mum",
            "age": 35,
            "birthDay": {
                "day": 15,
                "monthName": "juillet",
                "year": 1977
            }
        }
    ]
}