Validating array in Laravel using custom rule with additional parameter - arrays

Question

I'm working with Laravel 5.7 and I need to validate a phone length by using 2 inputs (prefix+number). The total digits has to be 10 always.
I'm using this custom rule for other projects which works fine:
<?php
namespace App\Rules;
use Illuminate\Contracts\Validation\Rule;
class PhoneLength implements Rule
{
public $prefix;
/**
* Create a new rule instance.
*
* #return void
*/
public function __construct($prefix = null)
{
//
$this->prefix = $prefix;
}
/**
* Determine if the validation rule passes.
*
* #param string $attribute
* #param mixed $value
* #return bool
*/
public function passes($attribute, $value)
{
//
return strlen($this->prefix)+strlen($value) == 10 ? true : false;
}
/**
* Get the validation error message.
*
* #return string
*/
public function message()
{
return 'El Teléfono debe contener 10 dígitos (prefijo + número)';
}
}
In my controller I do something like
$validatedData = $request->validate([
'prefix' => 'integer|required',
'number' => ['integer','required', new PhoneLength($request->prefix)],
]);
Now I need to make use of arrays, so my new validation looks like
$validatedData = $request->validate([
'phones.*.prefix' => 'required',
'phones.*.number' => ['required', new PhoneLength('phones.*.prefix')],
]);
The above code doesn't work at all, the parameter is not being sent as expected.
How can I send an array value? Of course I need to get the values from the same array element, so if phones[0].number is under validation, the prefix phones[0].prefix is needed.
I've found this question, but I refuse to believe that is not possible to do in a "native" way:
Laravel array validation with custom rule
Thanks in advance

Answer 1

You could get $prefix from the request itself:
class PhoneLength implements Rule
{
public function passes($attribute, $value)
{
$index = explode('.', $attribute)[1];
$prefix = request()->input("phones.{$index}.prefix");
}
}
or pass the $request in the PhoneLength rule constructor, then use it.

Answer 2

The Abdeldayem Sherif's answer is good but there is a problem when the attribute has more level of nesting, for example: clients.*.phones.*.prefix. In this case, exploding and using the 1 index will cause an unexpected error. A better solution is using str_replace.
class PhoneLength implements Rule
{
public function passes($attribute, $value)
{
$prefixAttr = str_replace('.number', '.prefix', $attribute);
$prefix = request()->input($prefixAttr);
}
}

Answer 3

According to this https://github.com/laravel/framework/pull/18654 you can use, it will add your custom rule as dependent and replace asterix with needed indexes
Validator::extendDependent('contains', function ($attribute, $value, $parameters, $validator) {
// The $parameters passed from the validator below is ['*.provider'], when we imply that this
// custom rule is dependent the validator tends to replace the asterisks with the current
// indices as per the original attribute we're validating, so *.provider will be replaced
// with 0.provider, now we can use array_get() to get the value of the other field.
// So this custom rule validates that the attribute value contains the value of the other given
// attribute.
return str_contains($value,
array_get($validator->getData(), $parameters[0])
);
});
Validator::make(
[['email' => 'test#mail.com', 'provider' => 'mail.com']],
['*.email' => 'contains:*.provider']
)->validate();