Notify admin when page is edited?

Question

I found this previous post to automatically notify the admin when a post or page is published: Alert Email when any Post or Page is Changed

Works like a charm, thanks! However, it looks like the page has to be changed from draft or pending to published to trigger the action. Is there a modification to notify the admin when an already published page is updated?

thanks!

Answer 1

You can register TheDeadMedic's function to fire on the save_post action, which runs every time a post is saved, regardless of whether or not the status changed.

add_action( 'save_post', '__notify_admin_on_publish', 10, 3 );

Then, comment out these lines in his function:

//if ( $new_status != 'publish' || $old_status == 'publish' )
        //return;

To prevent getting an e-mail for autosaves, add this code to the top of the function:

global $post;
if( ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) || $post->post_status == 'auto-draft' )
    return;

Here's the fully merged code:

<?php
function __notify_admin_on_publish( $new_status, $old_status, $post )
{
    global $post;
    if( ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) || $post->post_status == 'auto-draft' )
        return;

    $message = 'View it: ' . get_permalink( $post->ID ) . "\nEdit it: " . get_edit_post_link( $post->ID );
    if ( $post_type = get_post_type_object( $post->post_type ) )    
        wp_mail( get_option( 'admin_email' ), 'New ' . $post_type->labels->singular_name, $message );
}
add_action( 'save_post', '__notify_admin_on_publish', 10, 3 );

Answer 2

You're right .. many of the notification plugins require a change of state and don't actually track if there is a new 'revision' to a post or page.

Recently WPMU did a long story on plugins that will track activity and you might find it helpful as it identifies a few plugins ...

http://wpmu.org/wordpress-activity-log/

Answer 3

@IanDunn's answer should work but I haven't tested it. However the structure for save_post callbacks is different from transition_post_status. The WordPress codex save_post page has its own code for save notifications:

<?php
function my_project_updated_send_email( $post_id ) {

    // If this is just a revision, don't send the email.
    if ( wp_is_post_revision( $post_id ) ) {
        return;
    }

    $post_title = get_the_title( $post_id );
    $post_url = get_permalink( $post_id );
    $subject = 'A post has been updated';

    $message = "A post has been updated on your website:\n\n";
    $message .= $post_title . ": " . $post_url;

    // Send email to admin.
    wp_mail( '[email protected]', $subject, $message );
}
add_action( 'save_post', 'my_project_updated_send_email' );