Angular 15: implementing Dynamic Form Validation Not Triggering on Conditional Fields
I need help solving I recently switched to I've been banging my head against this for hours... I'm currently working on an Angular 15 application where I'm implementing a dynamic form using Reactive Forms. The form consists of several fields, some of which should appear conditionally based on the values of other fields. The scenario I’m working with is that the validation for these conditional fields does not seem to trigger correctly. Here's a simplified version of my form setup: ```typescript import { Component, OnInit } from '@angular/core'; import { FormBuilder, FormGroup, Validators } from '@angular/forms'; @Component({ selector: 'app-dynamic-form', templateUrl: './dynamic-form.component.html', }) export class DynamicFormComponent implements OnInit { form: FormGroup; constructor(private fb: FormBuilder) { this.form = this.fb.group({ type: ['', Validators.required], details: ['', Validators.required] // This should be conditional }); } ngOnInit(): void { this.form.get('type')?.valueChanges.subscribe(value => { if (value === 'specificType') { this.form.get('details')?.setValidators([Validators.required]); } else { this.form.get('details')?.clearValidators(); } this.form.get('details')?.updateValueAndValidity(); }); } } ``` The field `details` should only require validation if the field `type` is set to `specificType`. However, I'm finding that even when `type` changes, the validation for `details` doesn’t seem to reset correctly. I’m observing that the behavior state for `details` remains true even when I remove the validators, and the form does not reflect the updated validity state. I've tried calling `updateValueAndValidity()` on the `details` control after clearing the validators, but it still doesn't seem to work. I even tried using a `setTimeout` to delay the validation update, thinking there might be a timing scenario, but that didn't help either. When I check the form errors, I see: ``` { details: { required: true } } ``` This appears even after I believe I've cleared the validation. Is there something I'm missing in the way I'm handling the conditional validation in Angular 15? Any insights or suggestions would be greatly appreciated! My development environment is Windows. How would you solve this? I'm on CentOS using the latest version of Typescript. Thanks for taking the time to read this! For reference, this is a production application. Any ideas what could be causing this? This is my first time working with Typescript 3.10. Any pointers in the right direction?