From 7eb4e8ef838f855fc2595399376bfac4884c82ef Mon Sep 17 00:00:00 2001
From: Ingo Schommer <ingo@silverstripe.com>
Date: Mon, 12 Apr 2010 03:17:09 +0000
Subject: [PATCH] BUGFIX: Fixed readonly form of TreeDropdownField when field
 is made readonly before value is set (from r94608) (from r96765)

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@102394 467b73ca-7a2a-4603-9d3b-597d59a354a9
---
 forms/TreeDropdownField.php | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/forms/TreeDropdownField.php b/forms/TreeDropdownField.php
index ba6f91df6..38d8008f5 100755
--- a/forms/TreeDropdownField.php
+++ b/forms/TreeDropdownField.php
@@ -206,5 +206,34 @@ class TreeDropdownField extends FormField {
 			return DataObject::get_one($this->sourceObject, "\"{$this->keyField}\" = '" . Convert::raw2sql($key) . "'");
 		}
 	}
-	
+
+	/**
+	 * Changes this field to the readonly field.
+	 */
+	function performReadonlyTransformation() {
+		return new TreeDropdownField_Readonly($this->name, $this->title, $this->sourceObject, $this->keyField, $this->labelField);
+	}
 }
+
+class TreeDropdownField_Readonly extends TreeDropdownField {
+	protected $readonly = true;
+	
+	function Field() {
+		$fieldName = $this->labelField;
+		if($this->value) {
+			$keyObj = $this->getByKey($this->value);
+			$obj = $keyObj ? $keyObj->$fieldName : '';
+		} else {
+			$obj = null;
+		}
+
+		$source = array(
+			$this->value => $obj
+		);
+
+		$field = new LookupField($this->name, $this->title, $source);
+		$field->setValue($this->value);
+		$field->setForm($this->form);
+		return $field->Field();
+	}
+}
\ No newline at end of file