Added option $check_col_diff to set only modified fields when buildin…

…g UPDATE query. Default is true. Can be modified from config.php for whole project or passed as parameter to edit() per object.

git-svn-id: http://voip.null.ro/svn/ansql/trunk@108 dbfed7de-b0aa-0410-b6a1-c7e608b77fc9

framework.php

@@ -34,6 +34,8 @@
 	$enforce_basic_constrains = false;
 if (!isset($critical_col_diff))
 	$critical_col_diff = false;
+if (!isset($check_col_diff))
+	$check_col_diff = true;
 
 require_once("debug.php");
 
@@ -867,6 +869,9 @@ class Model
 	//whether a select or extendedSelect was performed on the object 
 	protected $_retrieved;
 
+	protected $_check_col_diff;
+	protected $_modified_col = array();
+
 	protected static $_models = false;
 	protected static $_modified = false;
 	// array with name of objects that are performers when using the ActionLog class
@@ -877,6 +882,8 @@ class Model
 	 */
 	function __construct()
 	{
+		global $check_col_diff;
+
 		Debug::func_start(__METHOD__,func_get_args(),"framework");
 
 		$this->_invalid = false;
@@ -892,6 +899,8 @@ function __construct()
 			}
 			$this->$name = $var->_value;
 		}
+
+		$this->_check_col_diff = isset($check_col_diff) ? $check_col_diff : true;
 	}
 
 	/**
@@ -1304,10 +1313,13 @@ public function add($params=NULL, $retrieve_id=true, $keep_log=true)
 	 * @param $verifications Array with conditions trying to specify if this object can be modified or not
 	 * @return Array, array[0] is true/false, true when inserting was succesfull, array[1] default message to could be printed to the user, array[2] is array with fields there was an error with
 	 */
-	public function edit($params, $conditions = NULL, $verifications = array())
+	public function edit($params, $conditions = NULL, $verifications = array(), $check_col_diff = true)
 	{
 		Debug::func_start(__METHOD__,func_get_args(),"framework");
 
+		if(!$check_col_diff)
+			$this->_check_col_diff = $check_col_diff;
+
 		if($params) {
 			$res = $this->verifyRequiredFields($params);
 			if(!$res[0])
@@ -1336,10 +1348,14 @@ public function setParams($params)
 		Debug::func_start(__METHOD__,func_get_args(),"framework");
 
 		$this->_set = true;
+		$this->_modified_col = array();
 
-		foreach($params as $param_name=>$param_value)
+		foreach($params as $param_name=>$param_value) {
+			if($this->{$param_name} != $param_value)
+				$this->_modified_col[$param_name] = true;
 			if($this->variable($param_name))
 				$this->{$param_name} = $param_value;
+		}
 	}
 
 	/**
@@ -1486,12 +1502,15 @@ public function update($conditions = array(), $verifications = array())
 			return null;
 		foreach($vars as $var_name=>$var) 
 		{
+			if ($this->_check_col_diff && !isset($this->_modified_col[$var_name]))
+				continue;
+
 			if ($variables != '')
 			{
 				$variables .= ", ";
 				$update_log .= ", ";
 			}
-
+		
 			if(!strlen($this->{$var_name}) && $var->isRequired()) {
 				$error .= " "._("Required field")." '"._($var_name)."' "._("not set").".";
 				$error_fields[] = $var_name;