laravel返回的json如何全转换为字符串

Question

比如数据库中age为int类型，查出的$arr=['age'=>20,'id'=>100];通过Response::json($arr)返回的json为{"id":100,"age":20},除了在model中设置$casts=['age'=>'string']类型转换还有什么办法转换为{"id":"100","age":"20"}？因为要设置的字段太多

Answer 1

json_dump

Answer 2

phpclass Model extends Eloquent
{
    public function toArray()
    {
        return array_map(function($a) {
            return strval($a);
        }, parent::toArray());
    }
}