当无效用户时，Modx登录preHook中断

Question

我试图添加一个auth控件来验证用户是否已经登录，为此，我使用了登录preHook，我的工作基于这个https://forums.modx.com/thread/?thread=100027&page=3，这是我最后的预挂钩代码：

<?php
$modx->log(modX::LOG_LEVEL_ERROR, "Running login preHook ");
if (!isset($_GET['service'])){
    $formFields = $hook->getValues();
    $username = $formFields['username'];
    $modx->user = $modx->getObject('modUser', array('username' => $username, ));
    //Agregarle validacion
    if (isset($modx->user)) {
        $modx->log(modX::LOG_LEVEL_ERROR, "Captured usernames is ".$username. ' loaded user is ' . isset($modx->user));
        $profile = $modx->user->getOne('Profile');
        if (isset($profile)) {
            $extended = $profile->get('extended');
            $modx->log(modX::LOG_LEVEL_ERROR, "Logged is ".$extended['logged'] );
            if ($extended['logged'] == '1') {
                  $url = $modx->makeURL(38, '',  array('userblocked' => $username), 'https');
                  $modx->log(modX::LOG_LEVEL_ERROR, "Url is ".$url );
                  $modx->sendRedirect($url);
                  return false;
            }        
        } else {
            $errorMsg = "User profile for ".$username. " not found";
            $modx->log(modX::LOG_LEVEL_ERROR, $errorMsg );
            $hook->addError('user',$errorMsg);
            return false;
        }
        
    } else {
        $errorMsg = "User ".$username. " not found";
        $modx->log(modX::LOG_LEVEL_ERROR, $errorMsg );
        $hook->addError('user',$errorMsg);
        return false;
    }
    
} else {
    return true;    
}

当我试图使用一个有效的用户登录时，它会像预期的那样工作，但是当我在登录名上输入随机的胡言乱语时，我会得到以下错误：

致命错误:未捕获错误:调用/home/magdal31/coreM0dXF1L3s/model/modx/modaccessibleobject.class.php:215堆栈跟踪中的null成员函数get()：#0 /home/magdal31/coreM0dXF1L3s/model/modx/modaccessibleobject.class.php(36)：modAccessibleObject>checkPolicy(‘load’) #1 /home/magdal31/coreM0dXF1L3s/xpdo/xpdo.class.php(757)：modAccessibleObject::_loadInstance(Object(modX)，'modChunk'，数组) #2 /home/magdal31/coreM0dXF1L3s/xpdo/om/xpdoquery.class.php(584)：xPDO->调用(‘modChunk’，'_loadInstance'，Array) #3 /home/magdal31/coreM0dXF1L3s/xpdo/om/xpdoquery.class.php(566)：xPDOQuery->水合物图形Object( /home/magdal31/coreM0dXF1L3s/xpdo/om/xpdoobject.class.php(539)：xPDOQuery->/home/magdal31/coreM0dXF1L3s/xpdo/om/xpdoobject.class.php(539)：xPDOQuery->/home/magdal31/coreM0dXF1L3s/xpdo/om/xpdoobject.class.php(539)：(PDOStatement)，( true) #5 /home/magdal31/coreM0dXF1L3s/xpdo/xpdo.class.php(757)：xPDOObject：：loadCollectionG图(Object(ModX)、'modChunk‘、Array、Array、true) #6 /home/magdal31/coreM0dXF1L3s/xpdo/xpdo.class.php(1088)：xPDO->调用(’modChunk‘、’loadCollectionG.‘、Array) #7 /home/magdal31 31/coreM0dXF1L3s/ in /home/magdal31/coreM0dXF1L3s/model/modx/modaccessibleobject.class.php on 215

我的内部modx日志只写着：

2020-10-20 12:24:30运行登录preHook 2020-10-20 12:24:30用户sdfasfa未找到

知道会发生什么事吗？

Answer 1

我从Modx社区论坛上得到了答案，并在这里添加了它，以防其他人有同样的问题，或者类似的问题，下面是答案：

“您可能不应该用null覆盖$modx->user。如果您使用的话，尝试一下。”

$myuser = $modx->getObject('modUser', array('username' => $username, ));
//Agregarle validacion
if ($myuser) {
    $modx->user = $myuser;
    ...

而不是

$modx->user = $modx->getObject('modUser', array('username' => $username, ));
//Agregarle validacion
if (isset($modx->user)) {
   ....

https://community.modx.com/t/error-when-adding-prehook-to-login/3219/3?u=camicase82