RequiredIf.php

TLDR

This file contains a class called RequiredIf which is used to create a validation rule that checks if an attribute is required based on a condition.

Classes

RequiredIf

This class is used to create a validation rule that checks if an attribute is required based on a condition. The condition can be a callable or boolean. If the condition is a callable, the __toString() method will call the callable and return 'required' if the condition is true, or an empty string if the condition is false. If the condition is a boolean, the __toString() method will return 'required' if the condition is true, or an empty string if the condition is false.

Methods

None

<?php

namespace Illuminate\Validation\Rules;

use InvalidArgumentException;
use Stringable;

class RequiredIf implements Stringable
{
    /**
     * The condition that validates the attribute.
     *
     * @var callable|bool
     */
    public $condition;

    /**
     * Create a new required validation rule based on a condition.
     *
     * @param  callable|bool  $condition
     * @return void
     */
    public function __construct($condition)
    {
        if (! is_string($condition)) {
            $this->condition = $condition;
        } else {
            throw new InvalidArgumentException('The provided condition must be a callable or boolean.');
        }
    }

    /**
     * Convert the rule to a validation string.
     *
     * @return string
     */
    public function __toString()
    {
        if (is_callable($this->condition)) {
            return call_user_func($this->condition) ? 'required' : '';
        }

        return $this->condition ? 'required' : '';
    }
}