WordPress Publish Post Hook

By  on  

One of the best parts of WordPress is its hook/action system; this special hook system is WordPress' way of assigning callbacks when certain events occur. One event that there seems to be a lot of confusion over is which hook to use to detect when a post is initially published. There's the publish_post hook but that fires when you click the "Update" button after a post has already been published; that's not ideal.

Scour the WordPress documentation and forums and you're sure to see a dozen other solutions but none work as well as the transition_post_status hook:

// Add the hook action
add_action('transition_post_status', 'send_new_post', 10, 3);

// Listen for publishing of a new post
function send_new_post($new_status, $old_status, $post) {
  if('publish' === $new_status && 'publish' !== $old_status && $post->post_type === 'post') {
    // Do something!
  }
}

The transition_post_status occurs when a post goes from one status to another; you can check out the post status list to see other possible values. I've also added a post_type check to ensure the post is a blog post and not a page.

Whew, took me a while to find what I needed here -- hopefully this saves you a lot of searching and pain!

Recent Features

  • By
    How I Stopped WordPress Comment Spam

    I love almost every part of being a tech blogger:  learning, preaching, bantering, researching.  The one part about blogging that I absolutely loathe:  dealing with SPAM comments.  For the past two years, my blog has registered 8,000+ SPAM comments per day.  PER DAY.  Bloating my database...

  • By
    CSS vs. JS Animation: Which is Faster?

    How is it possible that JavaScript-based animation has secretly always been as fast — or faster — than CSS transitions? And, how is it possible that Adobe and Google consistently release media-rich mobile sites that rival the performance of native apps? This article serves as a point-by-point...

Incredible Demos

  • By
    HTML5’s window.postMessage API

    One of the little known HTML5 APIs is the window.postMessage API.  window.postMessage allows for sending data messages between two windows/frames across domains.  Essentially window.postMessage acts as cross-domain AJAX without the server shims. Let's take a look at how window.postMessage works and how you...

  • By
    Highlight Table Rows, Columns, and Cells Using MooTools 1.2.3

    Row highlighting and individual cell highlighting in tables is pretty simple in every browser that supports :hover on all elements (basically everything except IE6). Column highlighting is a bit more difficult. Luckily MooTools 1.2.3 makes the process easy. The XHTML A normal table. The cells...

Discussion

  1. Manny Fleurmond

    Alternatives are {$old_status}_to_{$new_status}, which takes one argument of the post in question and is a bit more precise and {$new_status}_{post_type}

  2. Well if a post is already published and we want to edit in such a way that its automatically go in the recent one !! then what is the best procedure for it ?

  3. X-R

    Hi !
    THanks for the tips very useful !
    unfortunatly, I can’t get this work,
    it seems that the hook is only called when created a new post,

    even with simple

    function intercept_all_status_changes( $new_status, $old_status, $post ) {
        d($new_status);
    }  
    add_action( 'transition_post_status', 'intercept_all_status_changes', 10, 3 );

    Do you confirm it works for you ?

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!