John Davidson

Message:

I have the following code.

class SomeObject implements JsonSerializable {

    public string $placeholder;

    public string $id;

    public string $model;

    public string $value;

    public bool $disabled;

    public bool $required;



    public function jsonSerialize()

    {

        return get_object_vars($this);

    }

}



class MainObject implements JsonSerializable

{

    public string $mainName;

    public SomeObject $someObject;



    public function __construct() {

        $this->mainName = (new ReflectionClass(MainObject::class))->getShortName();

        $this->someObject = new SomeObject();

    }



    public function jsonSerialize()

    {

        return get_object_vars($this);

    }

}



$main = new MainObject;

$jsonData = json_encode($main, JSON_PRETTY_PRINT);



>>> Result:

{

    "mainName": "MainObject",

    "someObject": []

}

I would like the MainObject to look like this

{

    "mainName": "MainObject",

    "someObject": {

        "placeholder": "",

        "id": "",

        "model": "",

        "value": "",

        "disabled": "",

        "required": ""

    }

}

however it seems that json_encode() method will only encode if objects have values assigned to them. if I make $someObject an associative array it works as expected.

How can I do this? Thanks in advance.

---

My Answer:
> public function jsonSerialize()
> {
> return [
> 'mainName' => $this->mainName,
> 'someObject' => $this->someObject
> ];
> }
> }

Now, when you call `json_encode` on an instance of `MainObject`, it will properly serialize the `SomeObject` property as well.