Файл: vendor/laravel/framework/src/Illuminate/Http/Middleware/SetCacheHeaders.php
Строк: 85
<?php
namespace IlluminateHttpMiddleware;
use Closure;
use IlluminateSupportCarbon;
use SymfonyComponentHttpFoundationBinaryFileResponse;
class SetCacheHeaders
{
/**
* Add cache related HTTP headers.
*
* @param IlluminateHttpRequest $request
* @param Closure $next
* @param string|array $options
* @return SymfonyComponentHttpFoundationResponse
*
* @throws InvalidArgumentException
*/
public function handle($request, Closure $next, $options = [])
{
$response = $next($request);
if (! $request->isMethodCacheable() || (! $response->getContent() && ! $response instanceof BinaryFileResponse)) {
return $response;
}
if (is_string($options)) {
$options = $this->parseOptions($options);
}
if (isset($options['etag']) && $options['etag'] === true) {
$options['etag'] = $response->getEtag() ?? md5($response->getContent());
}
if (isset($options['last_modified'])) {
if (is_numeric($options['last_modified'])) {
$options['last_modified'] = Carbon::createFromTimestamp($options['last_modified']);
} else {
$options['last_modified'] = Carbon::parse($options['last_modified']);
}
}
$response->setCache($options);
$response->isNotModified($request);
return $response;
}
/**
* Parse the given header options.
*
* @param string $options
* @return array
*/
protected function parseOptions($options)
{
return collect(explode(';', rtrim($options, ';')))->mapWithKeys(function ($option) {
$data = explode('=', $option, 2);
return [$data[0] => $data[1] ?? true];
})->all();
}
}