qt - Passing a QObject to an Script function with QJSEngine? -

i'm trying call function in external script while passing qobject parameter.

my qobject defined this:

#ifndef insertvalues_h #define insertvalues_h  #include <qobject>  struct insertvaluedef {   qstring name;   qstring xmlcode;   qstring value;   bool key;   bool insert; }; typedef insertvaluedef tinsertvaluedef;  class insertvalues : public qobject {     q_object public:     explicit insertvalues(qobject *parent = 0);     ~insertvalues();     void insertvalue(tinsertvaluedef value);     int count();      void setitemname(int index, qstring name);     void setitemxmlcode(int index, qstring xmlcode);     void setitemvalue(int index, qstring value);     void setitemiskey(int index, bool iskey);     void setitemtoinsert(int index, bool toinsert);      qstring itemname(int index);     qstring itemxmlcode(int index);     qstring itemvalue(int index);     bool itemiskey(int index);     bool itemtoinsert(int index);      bool valueisnumber(int index);     int getindexbycolumnname(qstring name);  private:     qlist<tinsertvaluedef> m_insertlist; };  #endif // insertvalues_h 

my js script function this:

function beforeinsert(table,data) {   if (table == "tmptable")   {     var index = data.getindexbycolumnname("tmpfield");     if (index >= 0)     {      data.setitemvalue(index,"carlos quiros");      }   } } 

the code runs runs script following:

qfile scriptfile(javascript);         if (!scriptfile.open(qiodevice::readonly))         {             log("error: script file defined cannot opened");             return 1;         }         jsengine.evaluate(scriptfile.readall(), javascript);         scriptfile.close();          insertvalues insertobject;          tinsertvaluedef tfield;         tfield.key = false;         tfield.name = "tmpfield";         tfield.xmlcode = "tmpcode";         tfield.value = "tmpvalue";         tfield.insert = true;         insertobject.insertvalue(tfield);         qstring error;          beforeinsertfunction = jsengine.evaluate("beforeinsert",error);          if (!beforeinsertfunction.iserror())         {             qjsvalue insertlistobj = jsengine.newqobject(&insertobject);             qjsvalue result = beforeinsertfunction.call(qjsvaluelist() << "tmptable" << insertlistobj);             if (result.iserror())             {                 log("error calling beforinsert js function.");                 return 1;             }             else             {                 log("js function seems ok");                 (int pos = 0; pos < insertobject.count(); pos++)                 {                     log(insertobject.itemname(pos) + "-" + insertobject.itemvalue(pos));                 }                 return 1;             }         }         else         {             log("error evaluating beforinsert js function. [" + error + "]");             return 1;         } 

i can see parameter "table" passing rest of code not working. guess cannot do:

var index = data.getindexbycolumnname("tmpfield"); 

any idea doing wrong? , else should make work?

thanks,

in order access properties or invoke methods of qobjects passed qjsengine (or qml), need declare them using q_property , q_invokable macros in qobject-derived class declaration.

please see qt documentation more details: exposing attributes of c++ types qml