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Say I've got the custom post type foo with a meta box called bar. I've posted an entry with bar = pineapple. Now I want to check if there is a foo in the database with a bar set to pineapple. How would I do that?

I've managed to get this working using a wpdb query but that doesn't feel right. Is there an elegant, maybe built-in way for me to do this?

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  • so the post meta key is bar and it's meta value is pineapple?
    – birgire
    Oct 9, 2013 at 0:39
  • @birgire Yes, in 1 post
    – Joren
    Oct 9, 2013 at 0:40

1 Answer 1

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I think you mean a query like this one:

$args = array( 
               'post_type'      => 'foo', 
               'meta_key'       => 'bar', 
               'meta_value'     => 'pineapple',
               'posts_per_page' => 1,
        );

$query = new WP_Query( $args );

You can check out further information here on meta queries in WP_Query.

If you only want to check if there exists such a post, you can use the found_posts property:

if( $query->found_posts > 0 ){
    // do stuff
}

or the usual way with the have_posts() method:

if( $query->have_posts() ){
    // do stuff
}

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