Changing the Meta Tags

[Nick]

You can dynamically change a page's meta tags from a plugin by including a function for the header_meta hook.

Here are two real examples. The first is from the Submit plugin which uses a post's content for the description tag. The second is from the Tags plugin which uses a post's tags as meta keywords.

    /**
     * Match meta tag to a post's description (keywords is done in the Tags plugin)
     */
    public function header_meta($h)
    {    
        if ($h->pageType == 'post') {
            echo '<meta name="description" content="' . $h->post->content . '">' . "\n";
            return true;
        }
    } 

    /**
     * Match meta tag to a post's keywords (description is done in the SB Base plugin)
     */
    public function header_meta($h)
    {
        if ($h->pageType != 'post') { return false; }
        $meta_content = sanitize($h->post->content, 'all');
        $meta_content = truncate($meta_content, 200);
        echo '<meta name="description" content="' . $meta_content . '" />' . "\n";
        return true;
    }