Fix null value throwing error

internalsystemerror · weierophinney · commit 9d6a1ad5c69f · 2018-12-11T10:42:39.000-06:00
This fixes: #40
diff --git a/src/Renderer/XmlRenderer.php b/src/Renderer/XmlRenderer.php
@@ -101,7 +101,6 @@ private function normalizeConstantValue($value)
     {
         $value = $value === true ? 'true' : $value;
         $value = $value === false ? 'false' : $value;
-        $value = $value === null ? '' : $value;
         return $value;
     }
 
@@ -115,6 +114,10 @@ private function isAssocArray(array $value) : bool
      */
     private function createResourceElement(DOMDocument $doc, string $name, $data)
     {
+        if ($data === null) {
+            return $doc->createElement($name, $data);
+        }
+        
         if (is_scalar($data)) {
             $data = $this->normalizeConstantValue($data);
             return $doc->createElement($name, $data);

Original file line number	Diff line number	Diff line change
`@@ -101,7 +101,6 @@ private function normalizeConstantValue($value)`
`101`	`101`	`{`
`102`	`102`	`$value = $value === true ? 'true' : $value;`
`103`	`103`	`$value = $value === false ? 'false' : $value;`
`104`		`- $value = $value === null ? '' : $value;`
`105`	`104`	`return $value;`
`106`	`105`	`}`
`107`	`106`
`@@ -115,6 +114,10 @@ private function isAssocArray(array $value) : bool`
`115`	`114`	`*/`
`116`	`115`	`private function createResourceElement(DOMDocument $doc, string $name, $data)`
`117`	`116`	`{`
	`117`	`+ if ($data === null) {`
	`118`	`+ return $doc->createElement($name, $data);`
	`119`	`+ }`
	`120`	`+`
`118`	`121`	`if (is_scalar($data)) {`
`119`	`122`	`$data = $this->normalizeConstantValue($data);`
`120`	`123`	`return $doc->createElement($name, $data);`