Fixes #4297: Added check for DOM extension to requirements

framework/CHANGELOG.md

@@ -139,6 +139,7 @@ Yii Framework 2 Change Log
 - Enh #4086: changedAttributes of afterSave Event now contain old values (dizews)
 - Enh #4114: Added `Security::generateRandomBytes()`, improved tests (samdark)
 - Enh #4209: Added `beforeCopy`, `afterCopy`, `forceCopy` properties to AssetManager (cebe)
+- Enh #4297: Added check for DOM extension to requirements (samdark)
 - Enh: Added support for using sub-queries when building a DB query with `IN` condition (qiangxue)
 - Enh: Supported adding a new response formatter without the need to reconfigure existing formatters (qiangxue)
 - Enh: Added `yii\web\UrlManager::addRules()` to simplify adding new URL rules (qiangxue)

framework/requirements/requirements.php

@@ -62,4 +62,11 @@ return array(
         'by' => '<a href="http://www.php.net/manual/en/book.fileinfo.php">File Information</a>',
         'memo' => 'Required for files upload to detect correct file mime-types.'
     ),
+    array(
+        'name' => 'DOM extension',
+        'mandatory' => false,
+        'condition' => extension_loaded('dom'),
+        'by' => '<a href="http://php.net/manual/en/book.dom.php">Document Object Model</a>',
+        'memo' => 'Required for REST API to send XML responses via <code>yii\web\XmlResponseFormatter</code>.'
+    ),
 );