PHP OOP - Validator 3

Rozbudowa walidatora – dodajemy regułę, która sprawdza, czy dana wartość jest e-mailem. Do dzieła!

Przypomnijmy, na czym skończyliśmy:

<?php 

/*
$form_rules =  [
    'email' => ['required', 'email'],
    'password' => ['required'],
    'confirmPassword' => ['required', 'match:password']
];
*/

$form_data = [ 
    'email' => 'john.doe@gmail.com',
    'password' => md5('helloworld'),
    'confirmPassword' => md5('helloworld')
];



interface RuleInterface
{
  public function validate(array $data, string $field, array $params): bool;

  public function getMessage(array $data, string $field, array $params): string;
}

class RequiredRule implements RuleInterface
{
  public function validate(array $data, string $field, array $params): bool
  {
    return !empty($data[$field]);
  }

  public function getMessage(array $data, string $field, array $params): string
  {
    return "Field {$field} is missing!";
  }
}

$field = 'email';
$required_rule = new RequiredRule;
$field_exists = $required_rule->validate($form_data, $field, []);
if(!$field_exists){
    echo $required_rule->getMessage($form_data, $field, []);
}

Tworzymy klasę EmailRule:

class EmailRule implements RuleInterface
{
  public function validate(array $data, string $field, array $params): bool
  {
    return (bool) filter_var($data[$field], FILTER_VALIDATE_EMAIL);
  }

  public function getMessage(array $data, string $field, array $params): string
  {
    return "Invalid email";
  }
}

Z rozpędu URLRule też możemy utworzyć:

class UrlRule implements RuleInterface
{
  public function validate(array $data, string $field, array $params): bool
  {
    return (bool) filter_var($data[$field], FILTER_VALIDATE_URL);
  }

  public function getMessage(array $data, string $field, array $params): string
  {
    return "Invalid URL";
  }
}

Pora wypróbować:

<?php 

/*
$form_rules =  [
    'email' => ['required', 'email'],
    'password' => ['required'],
    'confirmPassword' => ['required', 'match:password']
];
*/

$form_data = [ 
    'email' => 'john.doe@gmail.com',
    'password' => md5('helloworld'),
    'confirmPassword' => md5('helloworld')
];


//(...)

class EmailRule implements RuleInterface
{
  //(...)
}
class UrlRule implements RuleInterface
{
  //(...)
}

$field = 'email';
$rule = new EmailRule;
$is_email = $rule->validate($form_data, $field, []);
if(!$is_email){
    echo $rule->getMessage($form_data, $field, []);
}

Nic nie widać – znaczy działa. Ale sprawdźmy, czy jest Urlem:

<?php 

/*
$form_rules =  [
    'email' => ['required', 'email'],
    'password' => ['required'],
    'confirmPassword' => ['required', 'match:password']
];
*/

$form_data = [ 
    'email' => 'john.doe@gmail.com',
    'password' => md5('helloworld'),
    'confirmPassword' => md5('helloworld')
];


//(...)

class EmailRule implements RuleInterface
{
  //(...)
}
class UrlRule implements RuleInterface
{
  //(...)
}

$field = 'email';
$rule = new UrlRule;
$is_url = $rule->validate($form_data, $field, []);
if(!$is_url){
    echo $rule->getMessage($form_data, $field, []);
}
//Invalid URL

Match w następnym odcinku.

PHP OOP – Validator 3