Custom Decorator Message about class-validator HOT 4 CLOSED

import { registerDecorator, ValidatorConstraint, ValidatorConstraintInterface, ValidationOptions, ValidationArguments } from 'class-validator';

@ValidatorConstraint({ name: 'matchesProperty', async: false })
export class MatchesPropertyConstraint implements ValidatorConstraintInterface {

    public validate(value: string, args: ValidationArguments) {
      const [relatedPropertyName] = args.constraints;
      const relatedValue = (args.object as any)[relatedPropertyName];
      return typeof value === typeof relatedValue &&
        value === relatedValue;
    }

    public defaultMessage(args: ValidationArguments) { // Set the default error message here
      const [relatedPropertyName] = args.constraints;
      return `$property must match ${relatedPropertyName} exactly`;
    }

}

export function MatchesProperty(property: string, validationOptions?: ValidationOptions) {
  return (object: Object, propertyName: string) => {
    registerDecorator({
      name: 'matchesProperty',
      target: object.constructor,
      propertyName,
      constraints: [property],
      options: validationOptions,
      validator: MatchesPropertyConstraint
    });
  };
}