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I've searched WP Codex and StackExchange and gotten some clues, but I can't get this query working. I have 2 custom fields associated with each exhibition in Y-m-d format: exstart-date being the start date of the exhibition and exend-date being the ending date.

I can easily display upcoming exhibits and past exhibits, but I cannot get the meta_query right to display current exhibits (with a start date less than or equal to today AND end date greater than or equal to today). The code below displays nothing on the page. Help?

$paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;
$today = date('Y-m-d', strtotime('-6 hours'));
query_posts(array(
    'post_type' => 'exhibitions', 
    'posts_per_page' => 6, 
    'paged' => $paged,
    'orderby' => 'title',
    'order' => 'DESC',
    'meta_query'=>array(
        'relation'=>'AND',
        array(
            'key' => 'exstart-date',
            'value' => $today,
            'compare' => '<=',
            'type' => 'CHAR'
            ),
        array(
            'key' => 'exend-date',
            'value' => $today,
            'compare' => '>=',
            'type' => 'CHAR'
            )
        )
    ));
if (have_posts()) :
while (have_posts()) : the_post();
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one thing that immediately jumps out is 'type' => 'CHAR', should be 'type' => 'DATE', no? – Milo Sep 11 '11 at 23:20
I tried using DATE and it still didn't work. When I do the query for only the start date or only the end date, CHAR works fine. – Ray Gulick Sep 12 '11 at 1:50
the only other thing is that caller_get_posts is a true/false parameter, but has been replaced with ignore_sticky_posts, though that shouldn't really affect the query, you just get a deprecated notice. I tried it here and it seems to be working, maybe verify that nothing else is interfering with the query, like a plugin, print_r($wp_query) and inspect the contents. – Milo Sep 12 '11 at 2:45
Thanks, but print query did not reveal anything. Something is wrong with the relational meta_query. If I query exstart_date or exend_date by themselves, no problem; I get the right result. But the combined query returns nothing. – Ray Gulick Sep 12 '11 at 15:01
if something is wrong with the query, you'd see it in the generated SQL when you inspect $wp_query. it works as-is for me when I just copy/paste your code and add the proper meta fields (i'm also changing the post_type to one I already have set up). are your meta field dates formatted yyyy-mm-dd? I don't imagine the other queries you're doing would work if they weren't. – Milo Sep 12 '11 at 15:18
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1 Answer

up vote 1 down vote accepted

Here is the code I ended up with that works. I should have mentioned that the query was inside the loop, because when I showed it to Damian Taggart of Mindshare Studios, he noticed that he said I should be using WP_Query instead of query_posts. Thanks to Milo and others for attempting to help me without having all the necessary info.

<?php
     $paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;
     $today = date('Y-m-d', strtotime('-6 hours'));
     $myquery = new WP_Query(array(
     'post_type' => 'exhibitions', 
     'posts_per_page' => 6,  
     'paged' => $paged,
     'orderby' => 'title',
     'order' => 'ASC',
     'meta_query'=>array(
            'relation'=>'AND',
            array(
                'key' => 'exstart-date',
                'value' => $today,
                'compare' => '<=',
                'type' => 'CHAR'
            ),
            array(
                'key' => 'exend-date',
                'value' => $today,
                'compare' => '>=',
                'type' => 'CHAR'
            )
        )
    ));
    if ($myquery->have_posts()) :
    while ($myquery->have_posts()) : $myquery->the_post();
?>
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