Manually get knockout to re-evaluate a dependantObservable

Question

I am not sure if this is possible, but I have a scenario where I have a validation system which notifies my validation system when something has become valid/invalid via a d

Answer 1

On your computed observable (isValid) you can call notifySubscribers(currentValue), which will notify any subscribers with the current value. It will not re-evaluate the computed and will simply notify subscribers with the current value.

Answer 2

Add binding enable: formValid where formValid = ko.computed(return true if all values are valid) to submit button. This way user can not submit until form is filled properly.

Use ko.validation.validateObservable(yourDependentObservable) to revalidate field manually

or use yourObsevable.notifySubscribers() if yourDependentObservable depends on yourObservable.