This week was marked by exchange with a xili-language user about an error that occurs when reactivated after updating : some extracts.
QThe latest 1.8.6 update is causing this error on my WP 3.0.1 install. Any idea?
[23-Nov-2010 23:02:29] PHP Fatal error: Call to undefined function wp_get_current_user() in /home/jujucom/public_html/wp/wp-includes/capabilities.php on line 1059
R
When occurs this message ?
– when you activate xili-language plugin ?
– on admin or end-user side ?
– are you in mono or multisite mode ?
what is your plugin list ? – I will try to reproduce ?
It is very strange, because this plugin don’t call function where from the error…
function current_user_can( $capability ) {
$current_user = wp_get_current_user(); // line #1059
After investigations
The faulty is a plugin named theme-test-drive. His code is not based class architectured (impossible to order activation with action) and it uses two filters which are not restricted when enable.
I have reproduced the errors due to the filters (hack) of TTD
add_filter(‘template’, ‘themedrive_get_template’);
add_filter(‘stylesheet’, ‘themedrive_get_stylesheet’);
Effectively, I need current template and stylesheet options called by core wp functions to automatically detect the current value of theme, but TTD add these filters without conditions and transform the value BUT also TTD introduce conditions by getting if current_user_can w/o testing if this function is present.
I will study an elegant solution for testers like you but adding online theme testing in CMS multilingual dedicated for end user is a little perilous !
THE SOLUTION
here below the patch to encapsulate the two filters around line #300 in TTD
/**
* © dev.xiligroup.com 2010-11-24
* to avoid side effects of filters call everytime
*
*/
add_action('plugins_loaded','TTD_filters'); // because filters call current_user_can and other plugins need raw value from options
function TTD_filters () {
if ( !is_admin() ) { // not needed in admin side
add_filter('template', 'themedrive_get_template');
add_filter('stylesheet', 'themedrive_get_stylesheet');
}
}
It is a working solution and the author of TTD is informed.
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