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Make changes to a form before it’s rendered. Parameter $form is a form array.

Can be used for example to modify the form title, description, or success message.


function filter_form( $form, $args ) {
    $form['display']['description'] = 'New form description';
    return $form;
add_filter( 'af/form/before_render/key=FORM_KEY', 'filter_form', 10, 2 );


  • af/form/before_render Applies to all forms.
  • af/form/before_render/key=FORM_KEY Applies to forms with specific key.
  • af/form/before_render/id=FORM_ID Applies to forms with specific post ID.