update gallery field in repeater field advanced custom fields

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i need to implement a picture in a gallery field inside of a repeater field.

based on the update_sub_field function from acf i use:

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update_sub_field( array('flat_repeater', $repeaterRow, 'gallery'), $attachmentId, $postId);

i cant loop through the repeater field so my selector for the update_sub_field function of acf is

array(‘flat_repeater’, $repeaterRow, ‘gallery’)

where

‘flat_repeater’ = the name of the repeaterfield

$repeaterRow = the right row for the repeater where the gallery should
be updated

‘gallery’ = the name of the gallery field

and

$attachmentId = the id of the image in the media library from
wordpress

$postId = the post id where the repeater/gallery field is.

what am i doing wrong, cause it simply doesn’t work.

greetings timotheus

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2 comments

  1. you need to use the field key as the ‘name’ of the repeater field

    update_field('field_41hdk123', $arrayWithStuff, $postId);

    i hope that solves your problems bro

  2. i have solved it.

    perhaps someone needs it sometimes..

    the problem was the variable

    $repeaterRow = the right row for the repeater where the gallery should be updated

    i always used the key from the repeater array and that one starts with 0.

    but repeater rows start with 1 …

    -,-

    at leased its solved…

    greetings timotheus

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