ngx-custom-validators
Version:
Angular custom directives for validation
45 lines • 5.86 kB
JavaScript
import { FormControl, NgModel, Validators } from '@angular/forms';
import { isDate, isPresent, parseDate } from '../util/lang';
export const maxDate = (maxInput) => {
let value;
let subscribe = false;
let maxValue = maxInput;
const isForm = maxInput instanceof FormControl || maxInput instanceof NgModel;
return (control) => {
if (!subscribe && isForm) {
subscribe = true;
maxInput.valueChanges.subscribe(() => {
control.updateValueAndValidity();
});
}
if (isForm) {
maxValue = maxInput.value;
}
value = parseDate(maxValue);
if (!isDate(value) && !(value instanceof Function)) {
if (value == null) {
return null;
}
else if (isForm) {
return { maxDate: { error: 'maxDate is invalid' } };
}
else {
throw Error('maxDate value must be or return a formatted date');
}
}
if (isPresent(Validators.required(control))) {
return null;
}
const d = new Date(parseDate(control.value)).getTime();
if (!isDate(d)) {
return { value: true };
}
if (value instanceof Function) {
value = value();
}
return d <= new Date(value).getTime()
? null
: (isForm ? { maxDate: { control: maxInput, value: maxInput.value } } : { maxDate: { value: maxValue, control: undefined } });
};
};
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