Knockout ES5 - subscribe

[Richard Griffiths]

I have just become aware of the plugin Knockout-ES5.

1) What are peoples thoughts on using this plugin - advisable?

2) I'm having an issue with subscribing to a property....

I use a dto class in my main VM to hold data items.

Can't seem to be able to subscribe using code below (error - can't find property)

 ko.getObservable(vm, 'dto.LabelFrom').subscribe(function (newValue) {

        alert('The new value is ' + newValue);

    }); / /fails

 ko.getObservable(vm.dto, 'LabelFrom').subscribe(function (newValue) {

        alert('The new value is ' + newValue);

    }); / / also fails

Can anyone advise - thanks.

[Gunnar Liljas]

What is vm.dto? Could you show us more code?

/G

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[Richard Griffiths]

On Thursday, 18 January 2018 16:14:59 UTC, Richard Griffiths wrote:

I have just become aware of the plugin Knockout-ES5.

1) What are peoples thoughts on using this plugin - advisable?

2) I'm having an issue with subscribing to a property....

I use a dto class in my main VM to hold data items.

Can't seem to be able to subscribe using code below (error - can't find property)

/// <reference path="../knockout-3.4.2.debug.js" />

var vm;

function OrderLabelsVM() {

    var self = this;

    self.dto = new OrderLabelsDto();

    self.test = "123";

        ko.track(this);

}

var OrderLabelsDto = function (data) {

    var self = this;

    self.LabelFrom ="1234";// data ? data.LabelFrom : '0001';

    self.LabelTo = data ? data.LabelTo : '2000';

    self.TextOnLabel = data ? data.TextOnLabel : '.net';

    self.Message = data ? data.Message : 'Ready'; 

}

$(document).ready(function () {

    vm = new OrderLabelsVM();

    ko.applyBindings(vm);

    ko.getObservable(vm, 'test').subscribe(function (newValue) {

        alert('The new value is ' + newValue);

    });

    //ko.getObservable(vm, 'dto.LabelFrom').subscribe(function (newValue) {

    //    alert('The new value is ' + newValue);

    //});

    

}); 

[Richard Griffiths]

I have resolved this by adding 

 ko.track(this);

to my dto class

On Thursday, 18 January 2018 16:14:59 UTC, Richard Griffiths wrote: