App\Services\Form\Project\ProjectFormLaravelValidator::rules PHP Method

    protected function rules()
    {
        $rules = [];
        if (isset($this->data['recipe_id'])) {
            foreach ($this->data['recipe_id'] as $key => $val) {
                $rules["recipe_id.{$key}"] = 'required|exists:recipes,id';
            }
        }
        return $rules;
    }