javascript - ExtJS 6 access messageProperty in store sync's callback -


i want display message server in ui after synchronizing extjs grid. here's excerpt of how goes:

this.store.sync({         callback: function (records, operation, success) {           // messageproperty accessing code         },         success: function (batch, options) {           // messageproperty accessing code         },         failure: function (batch, options) {         }     });

here's piece of store definition:

 proxy: {     headers: { 'accept': 'application/json' },     limitparam: undefined,     pageparam: undefined,     startparam: undefined,     paramsasjson: false,     type: 'ajax',             // ...     reader: {         type: 'json',         rootproperty: 'data',         messageproperty: 'message'     },     // ... },

here's data comes server (omitted data inside array:

{  "data":[  ],  "message":"success!" }

the application doesn't seem have issues reading data property (i.e. grid works properly), i'm not able access message property in either callback or success event of sync method. error message:

uncaught typeerror: cannot read property 'message' of undefined(…)  createaccessor: (function () {     var re = /[\[\.]/;     return function (expr) {         var me = this,             simple = me.getusesimpleaccessors(),             operatorindex, result, current, parts, part, inexpr, isdot, isleft, isright, special, c, i, bracketed, len;         if (!(expr || expr === 0)) {             return;         }         if (typeof expr === 'function') {             return expr;         }         if (!simple) {             operatorindex = string(expr).search(re);         }         if (simple === true || operatorindex < 0) {             result = function (raw) {                 return raw[expr];  <-------- goes wrong @ point             };         }

if debug through code, @ point raw variable loses value, gives expected undefined error message. question how able retrieve message property in callback or success functions of ext 6 store?

in extjs 6 sencha has changed default value of keeprawdata false. if change true, should work expected again. sencha docs tell there chance of memory leak, have not yet experienced such issue.


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