HttpExtension: header can be '0'

Author: dg

src/Bridges/HttpDI/HttpExtension.php

@@ -96,7 +96,7 @@ public function afterCompile(Nette\PhpGenerator\ClassType $class)
 
 		$initialize = $class->getMethod('initialize');
 		$config = $this->getConfig();
-		$headers = $config['headers'];
+		$headers = array_map('strval', $config['headers']);
 
 		if (isset($config['frames']) && $config['frames'] !== true && !isset($headers['X-Frame-Options'])) {
 			$frames = $config['frames'];
@@ -130,7 +130,7 @@ public function afterCompile(Nette\PhpGenerator\ClassType $class)
 
 		$code[] = Helpers::formatArgs('$response = $this->getService(?);', [$this->prefix('response')]);
 		foreach ($headers as $key => $value) {
-			if ($value != null) { // intentionally ==
+			if ($value !== '') {
 				$code[] = Helpers::formatArgs('$response->setHeader(?, ?);', [$key, $value]);
 			}
 		}

tests/Http.DI/HttpExtension.headers.phpt

@@ -26,6 +26,7 @@ http:
 	headers:
 		A: b
 		C:
+		D: 0
 EOD
 , 'neon'));
 
@@ -39,6 +40,7 @@ Assert::contains('X-Frame-Options: SAMEORIGIN', $headers);
 Assert::contains('Content-Type: text/html; charset=utf-8', $headers);
 Assert::contains('X-Powered-By: Nette Framework 3', $headers);
 Assert::contains('A: b', $headers);
+Assert::contains('D: 0', $headers);
 Assert::notContains('C:', $headers);