<form method="POST">
    <h3>Editing: JsonResponse.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

namespace Illuminate\Http;

use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Contracts\Support\Jsonable;
use Illuminate\Support\Traits\Macroable;
use InvalidArgumentException;
use JsonSerializable;
use Symfony\Component\HttpFoundation\JsonResponse as BaseJsonResponse;

class JsonResponse extends BaseJsonResponse
{
    use ResponseTrait, Macroable {
        Macroable::__call as macroCall;
    }

    /**
     * Constructor.
     *
     * @param  mixed  $data
     * @param  int  $status
     * @param  array  $headers
     * @param  int  $options
     * @param  bool  $json
     * @return void
     */
    public function __construct($data = null, $status = 200, $headers = [], $options = 0, $json = false)
    {
        $this-&gt;encodingOptions = $options;

        parent::__construct($data, $status, $headers, $json);
    }

    /**
     * {@inheritdoc}
     *
     * @return static
     */
    public static function fromJsonString(?string $data = null, int $status = 200, array $headers = [])
    {
        return new static($data, $status, $headers, 0, true);
    }

    /**
     * Sets the JSONP callback.
     *
     * @param  string|null  $callback
     * @return $this
     */
    public function withCallback($callback = null)
    {
        return $this-&gt;setCallback($callback);
    }

    /**
     * Get the json_decoded data from the response.
     *
     * @param  bool  $assoc
     * @param  int  $depth
     * @return mixed
     */
    public function getData($assoc = false, $depth = 512)
    {
        return json_decode($this-&gt;data, $assoc, $depth);
    }

    /**
     * {@inheritdoc}
     *
     * @return static
     */
    public function setData($data = [])
    {
        $this-&gt;original = $data;

        // Ensure json_last_error() is cleared...
        json_decode('[]');

        if ($data instanceof Jsonable) {
            $this-&gt;data = $data-&gt;toJson($this-&gt;encodingOptions);
        } elseif ($data instanceof JsonSerializable) {
            $this-&gt;data = json_encode($data-&gt;jsonSerialize(), $this-&gt;encodingOptions);
        } elseif ($data instanceof Arrayable) {
            $this-&gt;data = json_encode($data-&gt;toArray(), $this-&gt;encodingOptions);
        } else {
            $this-&gt;data = json_encode($data, $this-&gt;encodingOptions);
        }

        if (! $this-&gt;hasValidJson(json_last_error())) {
            throw new InvalidArgumentException(json_last_error_msg());
        }

        return $this-&gt;update();
    }

    /**
     * Determine if an error occurred during JSON encoding.
     *
     * @param  int  $jsonError
     * @return bool
     */
    protected function hasValidJson($jsonError)
    {
        if ($jsonError === JSON_ERROR_NONE) {
            return true;
        }

        return $this-&gt;hasEncodingOption(JSON_PARTIAL_OUTPUT_ON_ERROR) &amp;&amp;
                    in_array($jsonError, [
                        JSON_ERROR_RECURSION,
                        JSON_ERROR_INF_OR_NAN,
                        JSON_ERROR_UNSUPPORTED_TYPE,
                    ]);
    }

    /**
     * {@inheritdoc}
     *
     * @return static
     */
    public function setEncodingOptions($options)
    {
        $this-&gt;encodingOptions = (int) $options;

        return $this-&gt;setData($this-&gt;getData());
    }

    /**
     * Determine if a JSON encoding option is set.
     *
     * @param  int  $option
     * @return bool
     */
    public function hasEncodingOption($option)
    {
        return (bool) ($this-&gt;encodingOptions &amp; $option);
    }
}
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