Angular2 bind number to input time

Question

I'm looking for a way to bind my number property to an time input. I want to do that because my model properties must only be type number. I would like to convert the time value to seconds with a binding. I tried this code:

<input type="time" step="1" [ngModel]="value.value | timeToNumber" (ngModelChange)="value.value = $event">

My timeToNumber pipe convert string "HH:mm:ss" to seconds. But it doesn't works because the input cannot accept number type. How can I manage to do that ?

Dudi · Accepted Answer · 2017-04-23 22:33:45Z

I think you can't do it in this way because kind of an infinite loops of calling ngModelChange after input's element had been changed which will cause calling the pipe "timeToNumber" which will cause ngModelChange to be called again ..

you can solve it by saving one more variable: "value.valueForm" for example which will hold your piped version value of "value.value".

for example:

            <input type="time" step="1" placeholder="time in seconds.." name="myTime" #iTime #myTime="ngModel"
                    [ngModel]="value.valueForm" 
                    (ngModelChange)="value.valueForm=onChange($event, iTime)" />


onChangeCash(eventStr: string, eRef): string {
    var res = this.getNumberOnChange(eventStr, eRef); // gets current value of element using eRef. Pipe it and return new piped value as res.
    this.value.value = this.getNumberOfStr(res); // gets new piped value as res and convert it to Model value you need to save.
    return res;
}

Sorry for not having an example of getNumberOnChange(), getNumberOfStr().

Collectives™ on Stack Overflow

Angular2 bind number to input time

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related