Subscribe to complete model in knockout js

Question

I have an view model with a lot of attributes and I want to detect any changes in order to store the model into my database.

I don´t want to subscribe to every single attribute, but to all at once

My approach with jQuery does not work at all

var MyModel = function(){
    var self = this;
    this.myMember1 = ko.observable(1);
    this.myMember2 = ko.observable(1);
    this.myMember3 = ko.observable(1);
    .....



     $.each(this, function (member, value) {
        member.subscribe(saveModel());
    })

}

Is there any known solution for my problem?

Answer 1

The callback for $.each will receive property name as 1st argument and property value as second. So in your case, member is the property name and value is the observable value. Also subscribe need a function and what you give it is the result of a function call.

So you need either:

$.each(this, function (member, value) {
    if(ko.isObservable(self[member])) {
        self[member].subscribe(saveModel); // saveModel not saveModel()
    }
});

or

$.each(this, function (member, value) {
    if(ko.isObservable(value)) {
        value.subscribe(saveModel); // saveModel not saveModel()
    }
});

If saveModel is also a member of MyModel, it should be referenced as self.saveModel.