Duplicate Content when using acf/render_field

• csaborio

• September 2, 2021 at 9:42 am

Howdy,

I wanted to add a button below a text field. The text field has the key:

field_mentorship_post_object_match_volunteer

So I added this code to hook up the function:

$this->af_registration->add_action(
    'acf/render_field/key=field_mentorship_post_object_match_client',
    MentorshipHooks::class,
    'add_edit_participant_button'
);

The callback prints out the button:

if ( $link !== '' && ! empty( $link ) ) : ?>
    <a class="button button-primary button-large centered-btn" href="<?php echo $link; ?>">
        Edit <?php echo ucwords( $participant_type ); ?>
    </a>

All good, but the callback is printing the button twice:

Any idea why this is being called twice?

• John Huebner

• September 2, 2021 at 11:36 am

It’s not happening when I test it, but then I’m not using a function call to do the addition.

The only thing I can think of from looking at your code is that this is adding the action twice for some reason

$this->af_registration->add_action(...

• csaborio

• September 2, 2021 at 11:04 pm

Thanks John.

af_registration is class from WPMUDEV which I have been using for years and it works fine. All my actions/filters are using that, so I would see 2 of everything, so who knows.

I was very naughty and stuck the button inside a div and hid the second one with a CSS rule 🙈

.btn-container {
    &:last-child {
        display: none;
    }
}

• John Huebner

• September 3, 2021 at 9:26 am

Is it possible that the code where you’re adding the action could be running twice somehow?

• Johan Hermansson

• February 1, 2023 at 8:58 am

I ended up solving this with a class that use a static boolean, to check if it’s already rendered or not.

class My_Custom_Field_Content {
   private static $rendered = false;

   public static function render() {
       if (self::$rendered === true) {
           // ignore rendering
           return;
       }

       self::$rendered = true;

       echo 'Well, hello there!';
   }
}

add_action('acf/render_field/key=field_123xyz', My_Custom_Field_Content::class . '::render' );