Hi,

I’ve been trying to setup a group (with “add more”) with a file uploader with Piklist, and it looks fine. But I noticed a strange issue. With the first group, I select a file and it’s ok. But, for the subsequent added groups, there is a hidden field with an undefined value that counts as a file.

Here is my grouped field code:

  piklist('field', array(
    'type' => 'group',
    'field' => 'home_slideshow',
    'label' => __( 'Slideshow' ),
    'add_more' => true,
    'fields' => array(
		  array(
		    'type' => 'file',
		    'field' => 'slider_img',
		    'label' => __( 'Selecionar Imagem' ),
		    'description' => __('Selecione uma imagem para o slide.' ),
		    'options' => array(
		      'modal_title' => __( 'Selecionar imagem do slide' ),
		      'button' => __( 'Selecionar' )
		    ),
			  'validate' => array(
			    array(
			      'type' => 'limit',
			      'options' => array(
			        'min' => 1,
			        'max' => 1
			      )
			    )
			  )
		  ),
		  array(
		    'type' => 'text',
		    'field' => 'slide_title',
		    'label' => __( 'Título do Slide' ),
		    'columns' => 12
		  ),
		  array(
		    'type' => 'text',
		    'field' => 'slide_link',
		    'label' => __( 'Link do Slide' ),
		    'columns' => 12
		  ),
    )
  ));

And, when I check the home_slideshow array, I got this:

		Array
(
    [0] => Array
        (
            [slider_img] => Array
                (
                    [0] => Array
                        (
                            [0] => 1526
                        )

                    [1] => Array
                        (
                            [0] => undefined
                            [1] => 1525
                        )

                )

            [slide_title] => Array
                (
                    [0] => Slide 01
                    [1] => Slide 02
                )

            [slide_link] => Array
                (
                    [0] => http://site.com/
                    [1] => http://site.com/
                )

        )

)

When I check the source code from the group backend, I noticed this hidden field:

<input type="hidden" name="_post_meta[home_slideshow][slider_img][2][]" value="undefined" data-piklist-field-group="729944c" data-piklist-field-addmore="true" class="_post_meta_home_slideshow_slider_img" data-piklist-original-id="_post_meta_home_slideshow_slider_img_0">.

If I update the page, then add another image, then remove it and update it again, the undefined value is removed. Also, when I add a new group and add multiple images, the sortable function doesn’t work for that new group. But, if I update the page, it starts to work again.

Am I doing something wrong?

Thanks!