Here is the whole code:
// Change Field into a select
$field['type'] = 'select';
$field['ui'] = 1;
$field['ajax'] = 1;
$field['choices'] = array();
// get sites
$sites = $this->acf_get_sites();
// set choices
if( !empty($sites) ) {
foreach( $sites as $site ) {
//get blog name
$current_blog_details = get_blog_details( array( 'blog_id' => $site['blog_id'] ) );
// append to choices
$field['choices'][ $site["blog_id"] ] = $current_blog_details->blogname;
}
}
// render
acf_render_field( $field );
Its almost the same like the post_object. I have no JS errors. Without ui and ajax its just fine.
It was my bad. Sorry. Code works like charm.
