39 lines
1.3 KiB
TypeScript
39 lines
1.3 KiB
TypeScript
// Core imports
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import { AbstractControl, ValidationErrors } from '@angular/forms';
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/**
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* Provides methods to perform custom validation to form inputs.
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*/
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export class CustomValidator {
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/**
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* Sets errors to the confirm password input field if it does not match with the value in the password input field.
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*
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* @param control - The control object of the form being validated.
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*/
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static passwordMatchValidator(control: AbstractControl): void {
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const password: string = control.get('password').value;
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const confirmPassword: string = control.get('confirmPassword').value;
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if (password !== confirmPassword) {
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control.get('confirmPassword').setErrors({ NoPasswordMatch: true });
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}
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}
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/**
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* Sets errors to a form field if it does not match with the regular expression given.
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*
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* @param regex - The regular expression to match with the form field.
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* @param error - Defines the map of errors to return from failed validation checks.
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* @returns The map of errors returned from failed validation checks.
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*/
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static patternValidator(regex: RegExp, error: ValidationErrors): ValidationErrors | null {
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return (control: AbstractControl): { [key: string]: any } => {
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if (!control.value) {
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return null;
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}
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const valid: boolean = regex.test(control.value);
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return valid ? null : error;
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};
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}
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}
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