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API CHANGE Don't include NULL returns in decorated methods called through Object->extend(), meaning empty method bodies in decorators won't confuse permission checks through $myObj->extend('canView') etc.

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git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@65451 467b73ca-7a2a-4603-9d3b-597d59a354a9
This commit is contained in:
Ingo Schommer 2008-11-07 12:09:39 +00:00
parent 429f81ed14
commit c30b5812d1
1 changed files with 8 additions and 3 deletions
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11
core/Object.php
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@ -459,19 +459,24 @@ class Object {
* originally returned void, so if you wanted to return results, you're hosed.
*
* Currently returns an array, with an index resulting every time the function is called.
* Only adds returns if they're not NULL, to avoid bogus results from methods just
* defined on the parent decorator. This is important for permission-checks through
* extend, as they use min() to determine if any of the returns is FALSE.
* As min() doesn't do type checking, an included NULL return would fail the permission checks.
*
* @param string $funcName The name of the function.
* @param mixed $arg An Argument to be passed to each of the extension functions.
*/
public function extend($funcName, &$arg=null) {
if($this->extension_instances) {
$return = array();
$returnArr = array();
foreach($this->extension_instances as $extension) {
if($extension->hasMethod($funcName)) {
$return[] = $extension->$funcName($arg);
$return = $extension->$funcName($arg);
if($return !== NULL) $returnArr[] = $return;
}
}
return $return;
return $returnArr;
}
}