metabox

meta_query with meta values as serialize arrays

No, it is not possible, and could even be dangerous. Serialised data is an attack vector, and a major performance issue. I strongly recommend you unserialise your data and modify your save routine. Something similar to this should convert your data to the new format: $args = array( ‘post_type’ => ‘my-post-type’, ‘meta_key’ => ‘_coordinates’, ‘posts_per_page’ … Read more

Create more Meta Boxes as needed

So you mean something like this? and when you click on Add tracks it becomes this: if it is what you mean the its done by creating a metabox that has simple jquery function to add and remove fields in it, and the data is saved as an array in of data in a single … Read more

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