How do I replace the contents of knockout js observable array with an array returned from a promise

Question

I am trying to replace the contents of an observable array with an array that is returned from a promise.

I initialize an observable array like so

let contents = ko.observableArray([]);

And the array that is returned from the promise looks something like this

[{name : test, code : 0, country : UK}]

How can replace the empty observable array with the contents of the array that is returned from the promise?

I have tried this

promise.then(array => {contents(array)});

As well as this

promise.then(function(value){contents(value)})

but neither of them add anything into the observable array.

I can't duplicate your problem with a simple example.

Erik Philips
– Erik Philips

2019-01-16 00:31:20 +00:00
Commented Jan 16, 2019 at 0:31 — Erik Philips
– Erik Philips, Commented Jan 16, 2019 at 0:31

j3ff · Accepted Answer · 2019-01-16 01:02:04Z

0

Check this link

you should first delete its content (if any) through observableArray method called removeAll.

// empty the array
contents.removeAll()

// insert the new array values
promise.then(array => {ko.utils.arrayPushAll(contents, array)});

// or
promise.then(function(value){ko.utils.arrayPushAll(contents, value)});

edited Jan 16, 2019 at 1:02

j3ff

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answered Jan 16, 2019 at 0:50

Hamza Boukhtam

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