I'm a little confused as to best practise for saving multi-select values in meta fields.
<select multiple name="_casestudypost">
is my form field
if I store $_POST['_casestudypost'] in a meta_key of the same name? (which returns an array) - how can I find out when 281 is in that array. I've tried:
$args = array( 'meta_query'=> array( array( 'key'=>'_casestudypost', 'value'=> 281, 'compare' => 'IN', 'type' => 'NUMERIC' ) ), 'post_type'=>'case_studies', 'post_status' => 'publish' );
However the generated SQL that Wordpress generates under the hood seems to ask, is meta_value (13,281,45) in 281, rather than is 281 in meta_value (13,281,45).