fix PHP 5 issue

Author: mutec

files/lib/data/content/Content.class.php

@@ -52,7 +52,7 @@ class Content extends DatabaseObject implements IRouteController, IPollObject, I
 	/**
 	 * @var string[]
 	 */
-	const AVAILABLE_POSITIONS = ['hero', 'headerBoxes', 'top', 'sidebarLeft', 'body', 'sidebarRight', 'bottom', 'footerBoxes', 'footer'];
+	public static $AVAILABLE_POSITIONS = ['hero', 'headerBoxes', 'top', 'sidebarLeft', 'body', 'sidebarRight', 'bottom', 'footerBoxes', 'footer'];
 
 	/**
 	 * @var \wcf\data\object\type\ObjectType

files/lib/data/content/ContentAction.class.php

@@ -207,7 +207,7 @@ public function validateGetAddDialog() {
 
 		//validate position
 		else if (!empty($this->parameters['position']) && $this->parameters['position'] == 'sidebar') $this->parameters['position'] = 'sidebarRight';
-		if (!isset($this->parameters['position']) || !in_array($this->parameters['position'], Content::AVAILABLE_POSITIONS)) throw new UserInputException('position');
+		if (!isset($this->parameters['position']) || !in_array($this->parameters['position'], Content::$AVAILABLE_POSITIONS)) throw new UserInputException('position');
 
 		//validate parent
 		if (isset($this->parameters['parentID']) && $this->parameters['parentID'] != 0) {

files/lib/data/page/Page.class.php

@@ -210,7 +210,7 @@ public function getChildrenTree($maxDepth = -1) {
 	 * @return	\cms\data\content\DrainedPositionContentNodeTree[]
 	 */
 	public function getContents() {
-		$availablePositions = Content::AVAILABLE_POSITIONS;
+		$availablePositions = Content::$AVAILABLE_POSITIONS;
 		$contentList = [];
 
 		foreach ($availablePositions as $position) {

files/lib/data/page/PageAction.class.php

@@ -647,7 +647,7 @@ public function getContentTypes() {
 		$types = ObjectTypeCache::getInstance()->getObjectTypes('de.codequake.cms.content.type');
 		foreach ($types as $key => $type) {
 			if (!$this->parameters['position'] == 'both') {
-				foreach (Content::AVAILABLE_POSITIONS as $position) {
+				foreach (Content::$AVAILABLE_POSITIONS as $position) {
 					if (!$type->getProcessor()->isAvailableToAdd($position)) break;
 				}
 			} else if (!$type->getProcessor()->isAvailableToAdd($this->parameters['position'])) {

files/lib/page/AbstractCMSPage.class.php

@@ -140,7 +140,7 @@ public function readData() {
 			$this->contentNodeTrees = $this->page->getContents();
 		} else {
 			$contents = $this->page->getContents();
-			foreach (Content::AVAILABLE_POSITIONS as $position) {
+			foreach (Content::$AVAILABLE_POSITIONS as $position) {
 				$this->contentNodeTrees[$position] = !empty($contents[$position]) ? $contents[$position] : [];
 			}
 		}