[Resolved] Get ID from a media file

[Author]

Posts

[per-wernerS-2]

Hello,

I have made a custom post type with a file-field in backend. Instead of just showing the URL of the file-field in frontend, I want to show the ID of the attachment in addition to the url of the uploaded file.

How to achive this in frontend?

Best
Svein Magne

[Shane]

Hi Svein,

Thank you for getting in touch.

Unfortunately this is not something that can be achieved by default with our Toolset plugins and as such you will need to make use of a custom shortcode to do this.

Add the following to your custom shortcodes section at Toolset -> Settings -> Custom Code and activate it.
<Code>

// Add Shortcode
function get_file_id( $atts ) {
// Attributes
$atts = shortcode_atts(
array(
'field' => '',
'post_id' => ''
),
$atts
);

$file_url = get_post_meta($atts['post_id'],$atts['field']);
$file_id = attachment_url_to_postid( $file_url );
return $file_id;

}
add_shortcode( 'get_file_id', 'get_file_id' );

[/php]

You can use the shortcode by doing the following [get_file_id field='wpcf-my-field' post_id='[wpv-post-id]']
Now replace wpcf-my-field with the slug of your custom field keeping the wpcf- prefix.

Please let me know if this helps.
Thanks,
Shane

[per-wernerS-2]

Shane,

Thanks for your support and attached code. Unfortunately the code you provided returned a 0, not the ID of the media file.

My custom field is named: pdf
[get_file_id field='wpcf-pdf' post_id='[wpv-post-id]']

When I use the shortcode [wpv-post-id] the post_id is returned correctly in the view.

Do you have any suggestions what is wrong with my code?

Best
Svein Magne

[Shane]

Hi Svein,

I've updated the code a bit. This one should now work.

function get_file_id( $atts ) {
// Attributes
$atts = shortcode_atts(
array(
'field' => '',
'post_id' => ''
),
$atts
);

$file_url = get_post_meta($atts['post_id'],$atts['field']);
$file_id = attachment_url_to_postid( $file_url[0] );
return $file_id;

}
add_shortcode( 'get_file_id', 'get_file_id' );

Thanks,
Shane