how to use laravel's validation rule in custom validation rule?

Question

I have input $data =['identifier' = 'xxxxxxxxxx'];, and want to save the encrypt($data['identifier']) to the table info primary id column.

I've to validate before save it. Rule unique:info, id isn't suitable here, so I want to write a custom validation rule. And in the custom validation rule, I encrypt() the value first, then use the unique validation rule.

I know how to write a custom validation rule, but how to use the unique validation rule in my custom validation rule?

Answer 1

Rules "unique" and "exists" use the DatabasePresenceVerifier class. So, you don't need to really extend the unique rule, just access this presence verifier. For instance:

Validator::extend('encrypted_unique', function ($attribute, $value, $parameters, $validator) {
    list ($table, $column, $ignore_id) = $parameters; // or hard-coded if fixed
    $count = $validator->getPresenceVerifier()->getCount($table, $column, encrypt($value), $ignore_id);
    return $count === 0;
});

Then you can use it as usual:

'identifier' => "encrypted_unique:table,column,$this_id"

Answer 2

Suppose you have A ModuleRequest that validates your inputs,you can write this method in this class

protected function validationData() 
{
    $all = parent::validationData();
    $all['email'] = encrypt($all['email']);
    return $all;

}