RestfulValdiationBadWay

RestfulValidationBadWay.php

<?php

class VehicleCreateRestResource {
  // POST handler
  public function post() {
    try {
      $payload = []json_decode(\Drupal::request()->getContent());

      // Check if vehicle name is not empty.
      if (empty($payload['name'])) {
        throw new \Exception("Vehicle name cannot be empty", 400);
      }
      else {
        // id the value is present
        if (strlen($payload['name']) <= 4) {
          throw new \Exception("Vehicle name too short", 400);
        }

        if (preg_match('/[\'^£$%&*()}{@#~?><>,|=_+¬-]/', $payload['name'])) {
          throw new \Exception("Vehicle name cannot contain special characters", 400);
        }
      }
      
      // Repeat similar for other fields.
      // Proceed to Entity creation if all validation pass.
      Vehicle::create($payload);
      return new Response($payload, 200);
    } catch (\Exception $e) {}
  }
}