udos86 / ng-dynamic-forms

Rapid form development library for Angular

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custom validation issue on kendo

olayda opened this issue · comments

I'm submitting a


[ ] Bug / Regression
[ ] Feature Request / Proposal

I'm using


NG Dynamic Forms Version: `X.Y.Z`

[ ] Basic UI
[ ] Bootstrap UI  
[ ] Foundation UI
[ ] Ionic UI
[ x] Kendo UI
[ ] Material  
[ ] NG Bootstrap
[ ] Prime NG

Description

hello, I am trying to create custom validation for my datepicker

new DynamicFormGroupModel({
id: "etaDetails",
legend: "Details",
group: [
new DynamicDatePickerModel({
id: "etaDate",
label: "ETA*",
format: "dd/MM/yyyy",

            validators:{
                required: null,
              //  myCustomValidator: null,
            }
            // ,errorMessages: {
            //     myCustomValidator: 'ETA must be within 3 months'
            // },

        }),

I implemented this to my module file too
providers: [ HIDDEN_MATCHER_PROVIDER,DISABLED_MATCHER_PROVIDER, REQUIRED_MATCHER_PROVIDER,
{provide: NG_VALIDATORS, useValue: myCustomValidator, multi: true}],

and my abstract file looks like this

import { AbstractControl, ValidationErrors } from "@angular/forms";

export function myCustomValidator(control: AbstractControl): ValidationErrors | null {
const hasError = control.value ? (control.value as string).startsWith("abc") : false;
return hasError ? {myCustomValidator: true} : null;
}

I get this error cannot read properties of undefined (reading 'invalid') at DynamicFormValidationService.showErrorMessages.

Could you please help be about what I am doing wrong. Thank you