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1. goffi
   Member
   Posted 1 year ago #

   Hi,

   I'm trying to pass a value to an ajax call back. I have already tried:
   

   do_action('wp_ajax_update', 123 );
   add_action( 'wp_ajax_update', 'my_call_back', 10, 1 );

   and also
   

   do_action('update', 123 );
   add_action( 'wp_ajax_update', 'my_call_back', 10, 1 );

   but doesn't work.

   Which is the correct way?

   Tnx!

2. Mark / t31os
   Moderator
   Posted 1 year ago #

   Which is the correct way?

   Neither really, the do_action already happens inside WP, all you need do is have a callback function in place for whatever action your ajax function sends to WordPress's ajax file.

   Most simple example of using an ajax callback is the one found here.
   http://codex.wordpress.org/AJAX_in_Plugins

   Beyond that check out:
   http://codex.wordpress.org/AJAX_in_Plugins#Further_Reading_-_External_Resources

   Also more here:
   http://codex.wordpress.org/AJAX

3. Ian Dunn
   Member
   Posted 4 months ago #

   I also want to do this, but I don't think it's possible. /wp-admin/admin-ajax.php just calls

   do_action( 'wp_ajax_nopriv_' . $_REQUEST['action'] );

   and

   do_action( 'wp_ajax_' . $_GET['action'] );

   So, it's not passing in additional parameters to the callback function. You'll have to include any variables you want in the POST request and then parse them out inside the callback function.

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