The method isValid of ConstraintValidatorInterface was renamed to validate and its return value was dropped.

[pawaclawczyk]

• The method isValid of ConstraintValidatorInterface was renamed to validate and its return value was dropped.

  ConstraintValidator still contains the deprecated isValid method and forwards validate calls to isValid by default. This BC layer will be removed in Symfony 2.3. You are advised to rename your methods. You should also remove the return values, which have never been used by the framework.

  Before:

  public function isValid($value, Constraint $constraint)
  {
    // ...
    if (!$valid) {
        $this->context->addViolation($constraint->message, array(
            '{{ value }}' => $value,
        ));
  
        return false;
    }
  }

  After:

  public function validate($value, Constraint $constraint)
  {
    // ...
    if (!$valid) {
        $this->context->addViolation($constraint->message, array(
            '{{ value }}' => $value,
        ));
  
        return;
    }
  }