wordpress - wp 插入后挂钩仅用于保存新职位

Question

I am using wp insert post as a hook to send an email when ever a new post has been submitted in wordpress, I have taken the reference of this link and tried below code. I am able to get emails perfectly, the problem is I am receiving mails even when the post is trashed which is not required. Is there any way to trigger mail only when new post is created and not for any other actions.

function my_project_updated_send_email( $post_id, $post, $update ) {

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

$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->post_title . ": " . $post_url;

// Send email to admin.
wp_mail( 'admin@example.com', $subject, $message );
}
add_action( 'wp_insert_post', 'my_project_updated_send_email', 10, 3 );

Answer 1

I just figured it out just after posting this question, but updating my solution here so that it would be useful for some one.

The solution is I have added a checkpoint by checking the post_status of submitted post using the same wp insert post like below.

$post_status = get_post($post_id)->post_status;

if($post_status == 'pending'){
//send the post pending email
}elseif($post_status == 'publish'){
// send the post published email
}elseif($post_status == 'trash'){
// send the post trashed email
}

Answer 2

You can use Post Status Transitions . Example for draft -> publish below.

add_action('draft_to_publish', 'draft_to_publish_actions');
function draft_to_publish_actions($object)
{
//do stuff    
}

Answer 3

function wcl_insert_car($post_ID, $post, $update) {
    if (get_post_type() != 'car') {
        return;
    }
    $value = get_post_meta($post_ID, 'car_init', true);
    if (empty($value)) {
        // One time code on init Post
        update_post_meta($post_ID, 'car_init', true);
    }
}
add_action('wp_insert_post', 'wcl_insert_car', 10, 3);