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Last active Dec 16, 2015
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Store WordPress query in a transient
// Let's create the function to be used as a shortcode
function featured_coaches($atts) {
// My content type is for Motor Coaches, and we want to get the ones that have
// the Featured box checked, but not the Sold box.
// I'm starting out saying we want 3, and no sold
'num' => 3
,'sold' => false
), $atts));
// instantiate my output variable
$output = '';
// create the transient name
$transient_name = 'featured_coaches';
// try getting the transient.
$featured_coaches = get_transient( $transient_name );
// if the get works properly, I should have an object in $featured_coaches.
// If not, run the query.
if(!is_object($featured_coaches)) {
// My actual query is kind of irrelevant to this tutorial, but I'm getting
// published coaches, no_found_rows is on, ordering by date, and getting the
// number indicated in the $num var
$args = array(
'post_status' => 'publish'
,'post_type' => 'coaches'
,'orderby' => 'date'
,'posts_per_page' => $num
,'no_found_rows' => true
// here's where I'm setting up the Sold option
if($sold == false) {
$args['meta_key'] = 'ecpt_sold';
$args['meta_value'] = 'on';
$args['meta_compare'] = 'NOT EXISTS';
} else {
$args['meta_key'] = 'ecpt_sold';
$args['meta_value'] = 'on';
// here's where I'm taking care of the featured option
$args['meta_key'] = 'ecpt_featured';
$args['meta_value'] = 'on';
$args['meta_compare'] = 'EXISTS';
// Run the query
$the_query = new WP_Query( $args );
// save the results of the query with a 12 hour timeout
$save_query = set_transient($transient_name,$the_query,60*60*12);
// load up $featured coaches with the results of the query. Don't get the
// transient because it would be the same as the contents of $the_query at
// this point, and we don't want another database call
$featured_coaches = $the_query;
// end object test
// from here on it's a normal WP_Query setup, but we're looking inside
// #featured_coaches for our stuff
// The Loop
while ( $featured_coaches->have_posts() ) : $featured_coaches->the_post();
$output .= get_template_part('loop', 'coach');
/* Restore original Post Data
* NB: Because we are using new WP_Query we aren't stomping on the
* original $wp_query and it does not need to be reset.
return $output;
// end recent_coaches
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