From d2dd861417b013c1bfbb3fcd06735b55ef6409df Mon Sep 17 00:00:00 2001
From: Majna <majnaggz@gmail.com>
Date: Tue, 17 Jan 2012 22:02:30 +0100
Subject: [PATCH] Update doc block for 'keepExisting' HABTM option.

---
 lib/Cake/Model/Model.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Cake/Model/Model.php b/lib/Cake/Model/Model.php
index d1d3b3f68..dc770fa5c 100644
--- a/lib/Cake/Model/Model.php
+++ b/lib/Cake/Model/Model.php
@@ -447,6 +447,7 @@ class Model extends Object implements CakeEventListener {
  * - `unique`: If true (default value) cake will first delete existing relationship
  *   records in the foreign keys table before inserting new ones, when updating a
  *   record. So existing associations need to be passed again when updating.
+ *   To prevent deletion of existing relationship records, set this key to a string 'keepExisting'.
  * - `conditions`: An SQL fragment used to filter related model records. It's good
  *   practice to use model names in SQL fragments: "Comment.status = 1" is always
  *   better than just "status = 1."