Drupal 预处理函数和会话
我在我使用的主题中的模板预处理函数中设置了一个会话变量，但是第一次打开网站时我无法读取会话变量，如果我刷新页面它工作正常，有人知道可能是什么问题吗？
这是我在预处理函数中使用的代码：
function m_preprocess(&$vars, $hook) {
$default_location = array(
'country_code' => 'ec',
'province_code' => 'p',
'province' => 'Pichincha',
'city' => 'Quito',
'city_path' => 'lugares/u/ec/p/*'
);
if (isset($_COOKIE['proximity_path'])) $default_location['proximity_path'] = $_COOKIE['proximity_path'];
$default_location['path'] = isset($_COOKIE['sort-by']) && $_COOKIE['sort-by']=='proximity'? $_COOKIE['proximity_path'] : $default_location['city_path'];
$_SESSION['location'] = $default_location;
}
I set a session var at template preprocess function in a theme I use, but the first time I open the site I cant read the session var, if I refresh the page it works fine, anybody know what can be the problem??
This is the code I use in the preprocess function:
function m_preprocess(&$vars, $hook) {
$default_location = array(
'country_code' => 'ec',
'province_code' => 'p',
'province' => 'Pichincha',
'city' => 'Quito',
'city_path' => 'lugares/u/ec/p/*'
);
if (isset($_COOKIE['proximity_path'])) $default_location['proximity_path'] = $_COOKIE['proximity_path'];
$default_location['path'] = isset($_COOKIE['sort-by']) && $_COOKIE['sort-by']=='proximity'? $_COOKIE['proximity_path'] : $default_location['city_path'];
$_SESSION['location'] = $default_location;
}
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评论（2）
有几件事：
尝试 dsm($_SESSION);查看网站首次加载时的 var 内容是什么。
我不知道您在哪里创建 $_COOKIE['proximity_path']，但它不在您显示的代码中。
检查拼写错误
A couple of things:
Try dsm($_SESSION); to see what is the var content when the site first load.
I don't know where you create $_COOKIE['proximity_path'], but it is not in the code you show.
Check for typos
模板预处理函数在node.tpl.php之前调用（这就是它被称为预处理的原因），这就是为什么$_SESSION变量的值在模板预处理函数中不可用。
正如您所指出的，它在第一页加载后起作用。仅当在节点主体中设置 $_SESSION 变量之后（使用 PHP 过滤器），才会发生这种情况
The template pre-process function is called before node.tpl.php (that's why it is called pre-process) and that is why the value of the $_SESSION variable is not available in the template preprocess function.
Like you pointed out, it works after the first page load. This happens when only after $_SESSION variable is set in the node body (using the PHP filter)