Refresh a form with Ajax after closing a Dialog

mx flag

So I have a custom form in which I display a list of entities. Below that list, I added an “Add More” link which opens a Dialog. When I close (or submit) the Dialog, I want the list of entities to be updated dynamically without refresh.

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I looked but I can't find a way to add a Dialog callback function. So I added an "update" button in my custom form with an ajax callback to refresh the form. Then, in a javascript file, I trigger the update button when the event 'dialog:afterclose' occures.

  Drupal.behaviors.addFriend_modalcallback = {
    attach: function () {

      $(window).once('addfriend-modalcallback').on('dialog:afterclose', function (e) {




This is obviously a messy solution. Do you guys know a clean way to do this? Thanks!

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