DBOAction parameters with allowEmpty=true failed for missing nested array structures

diff --git a/wcfsetup/install/files/lib/data/AbstractDatabaseObjectAction.class.php b/wcfsetup/install/files/lib/data/AbstractDatabaseObjectAction.class.php
index 1de72ecec4bdcba40a2b5b4e74f9414b3079a304..ab629363c2d73d0ac6d7e8d7421bda3622725ca2 100644 (file)
--- a/wcfsetup/install/files/lib/data/AbstractDatabaseObjectAction.class.php
+++ b/wcfsetup/install/files/lib/data/AbstractDatabaseObjectAction.class.php
@@ -505,7 +505,13 @@ abstract class AbstractDatabaseObjectAction implements IDatabaseObjectAction, ID
        protected function readValue($variableName, $allowEmpty, $arrayIndex, $type, $structure) {
                if ($arrayIndex) {
                        if (!isset($this->parameters[$arrayIndex])) {
-                               throw new SystemException("Corrupt parameters, index '".$arrayIndex."' is missing");
+                               if ($allowEmpty) {
+                                       // Implicitly create the structure to permit implicitly defined values.
+                                       $this->parameters[$arrayIndex] = [];
+                               }
+                               else {
+                                       throw new SystemException("Corrupt parameters, index '" . $arrayIndex . "' is missing");
+                               }
                        }
                        
                        $target =& $this->parameters[$arrayIndex];