How to Use

In general, after installing codeigniter-dea-rule, a new rule is added to Codegniter's validation rules, named is_temp_email. From now on, you can use it like other CI4 rules.

is_temp_email rule could now be used just like any other rule:

Rule	Parameter	Description	Example
is_temp_email	No	Fails if the field contains a Disposable Temporary E-mail.	is_temp_email

How To Use Rule

// e.g.
$validation->setRules([
    'email' => 'required|max_length[19]|is_temp_email',
]);

// e.g.
// In Controller.

if (! $this->validate([
    'email' => 'required|max_length[19]|is_temp_email',
    'password' => 'required|min_length[10]',
])) {
    // The validation failed.
    return view('login', [
        'errors' => $this->validator->getErrors(),
    ]);
}

// The validation was successful.

// ...

$rules = [
    'email'    => 'required|max_length[254]|valid_email|is_temp_email',
    'password' => 'required|max_length[255]|min_length[10]',
    'passconf' => 'required|max_length[255]|matches[password]',
];

// ...

Practical Examples For CodeIgniter Shield

As you know, CodeIgniter Shield allows you to easily apply your custom validation rules to fields. In the example below, we have shown how to use is_temp_email rule for the user registration form. Add the $registration property with the all validation rules and is_temp_email for registration in app/Config/Validation.php:

//--------------------------------------------------------------------
// Rules For Registration
//--------------------------------------------------------------------
public $registration = [
    'username' => [
        'label' => 'Auth.username',
        'rules' => [
            'required',
            'max_length[30]',
            'min_length[3]',
            'regex_match[/\A[a-zA-Z0-9\.]+\z/]',
            'is_unique[users.username]',
        ],
    ],
    'email' => [
        'label' => 'Auth.email',
        'rules' => [
            'required',
            'max_length[254]',
            'valid_email',
            'is_unique[auth_identities.secret]',
            'is_temp_email', // just add this line
        ],
    ],
    'password' => [
        'label' => 'Auth.password',
        'rules' => 'required|max_byte[72]|strong_password[]',
        'errors' => [
            'max_byte' => 'Auth.errorPasswordTooLongBytes'
        ]
    ],
    'password_confirm' => [
        'label' => 'Auth.passwordConfirm',
        'rules' => 'required|matches[password]',
    ],
];