Send email only upon draft

Question

I'm trying to send an email only upon saving a post as a draft, this doesn't seem to work with the current code:

add_action( 'save_post', 'er_send_email_on_post_draft_save' );

function er_send_email_on_post_draft_save( $post_id ) {

    //verify post is not a revision
    if ( $post_id->post_status == 'draft' ) {

        $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. "\n\n";

        //send email to admin
        wp_mail( '[email protected]', $subject, $message );

    }
}

it works if I change the if statement to:

!wp_is_post_revision( $post_id )

but that's not what I want, I only want to send notification if it's saved as a draft only.

Answer 1

$post_id is an integer (just the post id) and not a post object (the whole post with id,status,title ...)

so globalize the $post object and check the status from there eg:

function er_send_email_on_post_draft_save( $post_id ) {
    global $post;
    //verify post is not a revision
    if ( $post->post_status == 'draft' ) {

        $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. "\n\n";

        //send email to admin
        wp_mail( '[email protected]', $subject, $message );

    }
}

and if you want you can use a hook fired only when post is saved as draft

add_action('draft_post', 'send_my_mail_on_draft' );
function send_my_mail_on_draft( $post_id,$post){
   $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. "\n\n";

   //send email to admin
   wp_mail( '[email protected]', $subject, $message );
}

Answer 2

Try with this:

function dddn_process($id) {

    // emails anyone on or above this level
    $email_user_level = 7;

    global $wpdb;

    $tp = $wpdb->prefix;

    $result = $wpdb->get_row("
        SELECT post_status, post_title, user_login, user_nicename, display_name 
        FROM {$tp}posts, {$tp}users 
        WHERE {$tp}posts.post_author = {$tp}users.ID 
        AND {$tp}posts.ID = '$id'
    ");

    if (($result->post_status == "draft") || ($result->post_status == "pending")) {

        $message = "";
        $message .= "Draft updated on '" . get_bloginfo('name') . "'\n\n";
        $message .= "Title: " . $result->post_title . "\n\n";

            // *** Choose one of the following options to show the author's name

        $message .= "Author: " . $result->display_name . "\n\n";
        // $message .= "Author: " . $result->user_nicename . "\n\n";
        // $message .= "Author: " . $result->user_login . "\n\n";

        $message .= "Link: " . get_permalink($id);

        $subject = "Draft updated on '" . get_bloginfo('name') . "'";


        $editors = $wpdb->get_results("SELECT user_id FROM {$tp}usermeta WHERE {$tp}usermeta.meta_value >= " . $email_user_level);

        $recipient = "";    

        foreach ($editors as $editor) {         
            $user_info = get_userdata($editor->user_id);
            $recipient .= $user_info->user_email . ','; 
        } 

        mail($recipient, $subject, $message);


    }

}


add_action('save_post', 'dddn_process');

?>

Just create notification.php file with wp plugins description upload it to plugins folder and activate as regular plugin