Add option for InputfieldHidden to still render as an input in renderValue mode

wire/modules/Inputfield/InputfieldHidden.module

@@ -3,6 +3,8 @@
 /**
  * An Inputfield for handling XHTML "hidden" form inputs
  * 
+ * @property bool $renderValueAsInput Render the hidden input, even when in renderValue mode (default=false)
+ *
  */
 class InputfieldHidden extends Inputfield {
 
@@ -18,6 +20,7 @@ class InputfieldHidden extends Inputfield {
 	public function __construct() {
 		parent::__construct();
 		$this->setAttribute('type', 'hidden'); 
+		$this->set('renderValueAsInput', false);
 		$this->initValue = '';
 	}
 
@@ -25,6 +28,14 @@ class InputfieldHidden extends Inputfield {
 		return "<input " . $this->getAttributesString() . " />"; 
 	}
 	
+	public function ___renderValue() {
+		if($this->renderValueAsInput) {
+			return $this->render();
+		} else {
+			return parent::___renderValue();
+		}
+	}
+
 	public function getAttributes() {
 		$attrs = parent::getAttributes();
 		if(!strlen($attrs['value']) && $this->initValue) $attrs['value'] = $this->initValue;