File advanced rwmb_meta helper, array error - Meta Box

This topic has 1 reply, 2 voices, and was last updated 3 years, 7 months ago by Long Nguyen.

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September 1, 2021 at 11:45 PM #30547
[email protected]
Participant
Hello,
when I use rwmb_meta helper to get a link for file download into Oxygen repeater. I need to get just one file.
```
<?php
$files = rwmb_meta( 'cf-den-1-ustanoveni', array( 'limit' => 1 ) );
$file = reset( $files );
?>
<a href="<?php echo $file['url']; ?>">Ustanovení</a>
```
I get the link on the frontend just fine, but backend reports this error
reset() expects parameter 1 to be array, string given.
Any thoughts on this?

Thank you.

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September 2, 2021 at 10:23 PM #30555
Long Nguyen
Moderator
Hi,

That means on the backend, the helper function gets the wrong third argument $post_id. You can try to put the post ID to the helper function and re-check it.
```
$files = rwmb_meta( 'cf-den-1-ustanoveni', array( 'limit' => 1 ), 1234 );
```
Get more details on the documentation https://docs.metabox.io/rwmb-meta/#arguments

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