arm-api/app/Rules/TWLimited.php

<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\Rule;
use Illuminate\Contracts\Validation\DataAwareRule;

class TWLimited implements Rule, DataAwareRule
{
    protected $data = [];
    
    /**
     * Create a new rule instance.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    /**
     * Determine if the validation rule passes.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @return bool
     */
    public function passes($attribute, $value)
    {
        //
        if (substr($value, 0, 2)=='TW') {
            if (is_null($this->data['registeredSession'])) {
                return false;
            }
            if (is_null($this->data['lunchOptions'])) {
                return false;
            }
        }
        return true;
    }

    /**
     * Set the data under validation.
     *
     * @param  array  $data
     * @return $this
     */
    public function setData($data)
    {
        $this->data = $data;
 
        return $this;
    }

    /**
     * Get the validation error message.
     *
     * @return string
     */
    public function message()
    {
        return 'The validation error message.';
    }
}