F# MVC Json Result, on the client empty object after Ajax call -


i have f# mvc app, , trying ajax call , endpoint return list of people, display in table.

type person(credits:int, name:string, serverdatetime:datetime ) = class end  type peoplemeta(  persons:resizearray<person> ) =      member t.size() = 1  [<httpget>] member this.getpeoplemeta()=     let person1 = person(1,"a",datetime.now)     let person2 = person(2,"b",datetime.now)     let persons = new resizearray<person>()     persons.add(person1);     persons.add(person2);     let peoplemeta = peoplemeta( persons )     this.json( peoplemeta , jsonrequestbehavior.allowget )

on html/javascript have this...

    <script src="/knockout-2.2.0.js"></script>     <script src="knockout.mapping.js"></script>   <body>  <div id="contentviewmodelajax">     <div>         <div data-bind="template: { name: 'personajax-template', foreach: people }">         </div>     </div> </div> <script type="text/html" id="personajax-template">     <span data-bind="text: name"></span>      <span data-bind="text: credits"></span>      <span data-bind="text: serverdatetime"></span>      <br /> </script> <script>     $(document).ready(function () {         execpageviewmodel();     });     var execpageviewmodel = function () {         function peopleviewmodel(config) {             var self = this;             self.config = config;             self.people = ko.observablearray([]);             self.getpeople = function () {                 var url = "getpeoplemeta";                 var jqxhr = $.ajax({ url: url, type: 'get', cache: false, 'data':self.config });                 jqxhr.done(function (data) {                     console.log(data);                     console.log(data.persons);                     self.people(data.persons);                     ko.applybindings(self, document.getelementbyid(self.elementid));                 });                 settimeout(self.getpeople, 5000);             };             self.exec = function () {                 self.getpeople();             };         };         var viewmodelconfig = {'elementid':'contentviewmodelajax','personid':1};         var peopleviewmodel = new peopleviewmodel(viewmodelconfig);         peopleviewmodel.exec();     }; </script>

the console.log data {} , data.persons undefined. ideas ?

this new code got me result looking 

type person() =      let mutable _credits = 0     let mutable _name  = ""     let mutable _serverdatetime = ""     member x.credits get() = _credits , set v = _credits <- v     member x.name get() = _name , set v = _name <- v     member x.serverdatetime get() = _serverdatetime , set v = _serverdatetime <- v  type peoplemeta() =      let mutable _persons:resizearray<person>  = new resizearray<person>()      member x.persons get() = _persons , set v = _persons <- v       [<httpget>]     member this.getpeoplemeta()=         let person1 = person()         person1.credits <-2          person1.name  <- guid.newguid().tostring().substring(1,5)          person1.serverdatetime  <- datetime.now.tostring()         let persons = new resizearray<person>()         persons.add(person1);         let peoplemeta = peoplemeta(  )         peoplemeta.persons <- persons          this.json( peoplemeta , jsonrequestbehavior.allowget )

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