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
    Vibration API

    Many of the new APIs provided to us by browser vendors are more targeted toward the mobile user than the desktop user.  One of those simple APIs the Vibration API.  The Vibration API allows developers to direct the device, using JavaScript, to vibrate in...

  • By
    Tips for Starting with Bitcoin and Cryptocurrencies

    One of the most rewarding experiences of my life, both financially and logically, has been buying and managing cryptocurrencies like Bitcoin, Litecoin, Ethereum. Like learning any other new tech, I made rookie mistakes along the way, but learned some best practices along the way. Check out...

Incredible Demos

  • By
    MooTools Equal Heights Plugin:  Equalizer

    Keeping equal heights between elements within the same container can be hugely important for the sake of a pretty page. Unfortunately sometimes keeping columns the same height can't be done with CSS -- you need a little help from your JavaScript friends. Well...now you're...

  • By
    iPad Detection Using JavaScript or PHP

    The hottest device out there right now seems to be the iPad. iPad this, iPad that, iPod your mom. I'm underwhelmed with the device but that doesn't mean I shouldn't try to account for such devices on the websites I create. In Apple's...

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!