google apps script - Can I develop an wizard application (sequentially submit forms)? -

in understanding now, 1 doget() can trigger unique dopost() in google apps script application.

i perform software publisher system user upload file or fill revision information in forms , push submit next step. final page show input information, send email guys , complete operation.

but how enter next form after submit button pushed?

i have tried method creating 2nd step , 3rd step forms in dopost(), , using try...catch difference step form triggered current step, following code. (because steps can't callback item throw non-previous step, arises exception)

it works think doesn't make sens , silly. have better solutions? thanks, please.

//--------------------------------------------------------------------------- function doget(e) {   var app = uiapp.createapplication().settitle("ap publisher");        createfileuploadform(app);    return app; } //--------------------------------------------------------------------------- function dopost(e)  {     var app = uiapp.getactiveapplication();                     try {     // 2nd step form     var fileblob = e.parameter.thefile;               createrevisionform();   }   catch(error) {     try {       // 3rd step form       createconfirmform(e);     }     catch(error2) {       //complete              sendmail(e);                   modifysitepagecontent(e);                   savehistoryfile(e);           showconfirmedinfo(e);     }   }    return app;     } 

this answer copied entirely create new page in form dynamically, based on data of prev. page.

using uiapp service, have 1 doget() , 1 dopost() function... here's way extend them support dynamic multi-part form. (the example code borrowed this answer.)

your doget() builds part1 of form. in form, however, need identify form by name, this:

  var form = app.createformpanel().setid("emailcopyform"); 

you dopost() then, pass off handling of post operation different functions, depending on form has been submitted. see below. (also included: reportformparameters (), default handler display data collected form part.)

/**  * dopost function multi-form handling. individual form handlers must  * return uiapp instances.  */ function dopost(eventinfo) {   var app;   logger.log("form id = %s", eventinfo.parameter.formid);   // call appropriate handler posted form   switch (eventinfo.parameter.formid) {     case 'emailcopyform':       app = postemailcopyform(eventinfo);       break;     default:       app = reportformparameters (eventinfo);       break;   }   return app; }  /**  * debug function - returns uiinstance containing parameters  * provided form event.  *  * example of use:  * <pre>  *     function dopost(eventinfo) {  *       return reportformparameters(eventinfo);  *     }  * </pre>  *  * @param {event} eventinfo event uiapp form submission  *  * @return {uiinstance}  */ function reportformparameters (eventinfo) {   var app = uiapp.getactiveapplication();   var panel = app.createverticalpanel();   panel.add(app.createlabel("form submitted"));   (var param in eventinfo.parameter) {     switch (param) {       // skip noise; these keys used internally uiapp       case 'lib':       case 'appid':       case 'formid':       case 'token':       case 'csid':       case 'mid':         break;        // report parameters named in form       default:         panel.add(app.createlabel(" - " + param + " = " + eventinfo.parameter[param]));         break;     }   }   app.add(panel);   return app; } 

to generate each form part, subsequent form handlers can use data retrieved in previous parts dynamically add new form objects ui.