From e70f45e1d6131457d976f0a699acb03f459f3d35 Mon Sep 17 00:00:00 2001
From: gwoo <gwoo@cakephp.org>
Date: Thu, 26 Jun 2008 17:24:16 +0000
Subject: [PATCH] fixes #4987, unable to delete by adding version compare and
 setting useAlias in DboMysql

git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@7268 3807eeeb-6ff5-0310-8944-8be069107fe0
---
 cake/libs/model/datasources/dbo/dbo_mysql.php | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/cake/libs/model/datasources/dbo/dbo_mysql.php b/cake/libs/model/datasources/dbo/dbo_mysql.php
index 20f7b54fa..6d3ba63f9 100644
--- a/cake/libs/model/datasources/dbo/dbo_mysql.php
+++ b/cake/libs/model/datasources/dbo/dbo_mysql.php
@@ -97,6 +97,12 @@ class DboMysql extends DboSource {
 		'binary' => array('name' => 'blob'),
 		'boolean' => array('name' => 'tinyint', 'limit' => '1')
 	);
+/**
+ * use alias for update and delete. Set to true if version >= 4.1
+ *
+ * @var boolean
+ */
+	var $__useAlias = true;
 /**
  * Connects to the database using options in the given configuration array.
  *
@@ -121,6 +127,8 @@ class DboMysql extends DboSource {
 			$this->setEncoding($config['encoding']);
 		}
 
+		$this->__useAlias = (bool)version_compare(mysql_get_server_info($this->connection), "4.1", ">=");
+
 		return $this->connected;
 	}
 /**
@@ -251,6 +259,10 @@ class DboMysql extends DboSource {
  * @return array
  */
 	function update(&$model, $fields = array(), $values = null, $conditions = null) {
+		if (!$this->__useAlias) {
+			return parent::update(&$model, $fields, $values, $conditions);
+		}
+
 		if ($values == null) {
 			$combined = $fields;
 		} else {
@@ -286,6 +298,9 @@ class DboMysql extends DboSource {
  * @return boolean Success
  */
 	function delete(&$model, $conditions = null) {
+		if (!$this->__useAlias) {
+			return parent::delete(&$model, $conditions);
+		}
 		$alias = $this->name($model->alias);
 		$table = $this->fullTableName($model);
 		$joins = implode(' ', $this->_getJoins($model));