Pass in an (non-resized) attachment URL in WordPress and it returns the ID of the attachment. Doesn’t work with thumbnails.
function ed_get_attachment_id_by_url($url) {
global $wpdb;
$attachment = $wpdb->get_col($wpdb->prepare("SELECT ID FROM {$wpdb->prefix}posts WHERE guid='%s';", $url));
if ( $attachment ) {
return $attachment[0];
} else {
return false;
}
}
The simplest way to hide content from logged out users by wrapping content in [protect] hide me [/protect]
/*************
PROTECT SHORTCODE - If user is not logged in, content within [protect] is replaced with a predefined string.
*****************/
add_action( 'init', 'dm2_register_protect_shortcode');
function dm2_register_protect_shortcode() {
add_shortcode('protect', 'dm2_protect_function');
}
function dm2_protect_function($atts, $content = null) {
if ( is_user_logged_in() ) {
$return_string = $content;
} else {
$return_string = 'You must be logged in to view this content';
}
wp_reset_query();
return $return_string;
}
While looking into the course of kernel panics on my iMac, I found that two kexts relating to Avatron’s Air Display were in /System/Library/Extensions, despite the fact that I uninstalled Air Display using their bundled uninstaller a bit back. The two offending files are AVVideoCard.kext and AVFrameBuffer.kext. Simply moving them outside of the Extensions folder and rebooting is enough to get rid of them, and there doesn’t seem to be any ill effects.
We’ll see if that fixes the kernel panics.
I very quickly (and badly) hacked up Zahlan’s excellent Categories Images plugin to save image IDs rather than the absolute URL to the image file. This means we can use WordPress’ image resizing as well as its other image meta tools.
Download the categories-images plugin (zip)
Update (10 Oct 12): The first upload had a bit of code left in from my own use of the plugin that limited it to a certain taxonomy. I’ve removed it now so the plugin works on all taxonomies as it should.
The key points are:
This adds a class of the item’s name to each list item in a nav menu in WordPress. So, if the page item is called ‘About us’, the li gets an extra class of ‘menu-item-about-us’. Handy for styling.
add_filter('nav_menu_css_class' , 'ed_page_title_class' , 10 , 2);
function ed_page_title_class($classes, $item){
$classes[] = sanitize_title('menu-item-' . $item->title);
return $classes;
}