--- t3lib/class.t3lib_tceforms.php~svn	2013-05-24 16:39:41.000000000 +0200
+++ t3lib/class.t3lib_tceforms.php~forge-50787	2013-08-09 18:02:04.000000000 +0200
@@ -1414,12 +1414,42 @@
 		$specConf = $this->getSpecConfFromString($PA['extra'], $PA['fieldConf']['defaultExtras']);
 
 			// Getting the selector box items from the system
-		$selItems = $this->addSelectOptionsToItemArray(
-			$this->initItemArray($PA['fieldConf']),
-			$PA['fieldConf'],
-			$this->setTSconfig($table, $row),
-			$field
-		);
+
+            // Patch to implement FlexForms being accessible using _THIS_ROW (f.e. ###REC_FIELD_ in foreign_table_where)
+            // Gabriel Kaufmann <info@typoworx.de>
+
+        $TSconfig = $this->setTSconfig($table, $row);
+        if($this->dataStructParent=='flex') {
+                // Parse FlexForm-Data to one-dimensional Array
+            $lDEF = 'lDEF';
+            if(
+               $GLOBALS['TSFE']->config['config']['sys_language_uid']>0 &&
+               !empty($GLOBALS['TSFE']->config['config']['language'])
+            ) {
+                $lDEF = strtoupper($GLOBALS['TSFE']->config['config']['language']);
+            }
+
+            $flexArr = null;
+            if( ($flexArr = t3lib_div::xml2array($row[ $field ])) ) {
+                $flexArr = current($flexArr['data']);
+                $flexArr = isset($flexArr[ $lDEF ]) ? $flexArr[ $lDEF ] : $flexArr['lDEF'];
+                foreach($flexArr as $k => $v) {
+                    $TSconfig['_THIS_ROW'][ $field.'.'.$k ] = current($v);
+                }
+            }
+
+            if($config['type']=='select' || $config['group']) {
+                $TSconfig['_THIS_ROW'][ $field.'.'.$k ] = current(t3lib_div::trimExplode('|', $TSconfig['_THIS_ROW'][ $field.'.'.$k ], 1));
+            }
+        }
+
+        $selItems = $this->addSelectOptionsToItemArray(
+            $this->initItemArray($PA['fieldConf']),
+            $PA['fieldConf'],
+            $TSconfig,
+            $field
+        );
+
 			// Possibly filter some items:
 		$keepItemsFunc = create_function('$value', 'return $value[1];');
 		$selItems = t3lib_div::keepItemsInArray($selItems, $PA['fieldTSConfig']['keepItems'], $keepItemsFunc);
@@ -2685,6 +2715,11 @@
 
 			// Data Structure array must be ... and array of course...
 		if (is_array($dataStruct)) {
+
+                // Set this flag to let sub-processing know if we are in FlexForm-processing
+                // Gabriel Kaufmann <info@typoworx.de>
+            $this->dataStructParent = 'flex';
+
 			foreach ($dataStruct as $key => $value) { // Traversing fields in structure:
 				if (is_array($value)) { // The value of each entry must be an array.
 
@@ -2986,6 +3021,9 @@
 				}
 			}
 		}
+            // Reset flag after leaving FlexForm-processing
+            // Gabriel Kaufmann <info@typoworx.de>
+        $this->dataStructParent = '';
 
 		return $output;
 	}