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<?php
declare(strict_types=1);
namespace Yuca\LaravelGeoJsonRule;
use GeoJson\GeoJson;
use GeoJson\Geometry\Polygon;
use Illuminate\Contracts\Validation\Rule;
use Throwable;
/**
* RFC 7946 GeoJSON Format specification.
*/
class GeoJsonRule implements Rule
{
/** @var string */
private $geometryClass;
/** @var Throwable */
private $exception;
* Constructor.
* @param string|null $geometryClass Expected geometry.
public function __construct(?string $geometryClass = null)
$this->geometryClass = $geometryClass;
}
* Determine if the validation rule passes.
*
* @param string $attribute
* @param mixed $value
* @return bool
public function passes($attribute, $value)
try {
$value = json_decode($value);
// An exception will be thrown if parsing fails
$geometry = GeoJson::jsonUnserialize($value);
} catch (Throwable $t) {
$this->exception = $t;
return false;
// Check geometry type if specified
if (!empty($this->geometryClass)) {
return get_class($geometry) === $this->geometryClass;
return true;
* Get the validation error message.
* @return string|array
public function message()
$message = 'The :attribute does not satisfy the RFC 7946 GeoJSON Format specification';
if (!empty($this->exception)) {
$message .= ' because ' . $this->exception->getMessage();
} elseif (!empty($this->geometryClass)) {
$message .= ' for ' . basename(str_replace('\\', '/', $this->geometryClass));
return $message;
yucadoo /
laravel-geojson-rule
