CODEWITHSUNDEEP
javascriptjqueryknockout-2.0
rross
rross

Reputation: 2276

Updating Knockout viewModel

I'm attempting to update a knockout view model, but each time I try to push to an observable array it gives me an error that AuditViewModel is undefined. 

function (data, update) {
        if (update == false) {
            var AuditViewModel = {
                auditEvents: ko.observableArray(data.requirements)
            };

            ko.applyBindings(AuditViewModel);
        } else {
            AuditViewModel.auditEvents.push(data.requirements);
        }
    }

On the page load this function always runs with update == false, and that originally populates the view model. When I later call with update ==true then it fails. Can someone point me in the right direction?

Upvotes: 0

Views: 46

Answers (1)

bfuoco
bfuoco

Reputation: 715

Note that the line var AuditViewModel = { ... } is only executed if update == false. Because AuditViewModel is a local variable, if you later call the function when update == true, AuditViewModel will be undefined.

You will need to store the view model elsewhere, ie: window.AuditViewModel = { ... }.

Example:

function (data, update) {
    if (update == false) {
        window.AuditViewModel = {
            auditEvents: ko.observableArray(data.requirements)
        };

        ko.applyBindings(window.AuditViewModel);
    } else {
        window.AuditViewModel.auditEvents.push(data.requirements);
    }
}

Upvotes: 1

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