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featured posts loop with wp_reset_postdata
/**
* Filter the home page posts, and remove any featured post ID's from it. Hooked
* onto the 'pre_get_posts' action, this changes the parameters of the query
* before it gets any posts.
*
* @global array $featured_post_id
* @param WP_Query $query
* @return WP_Query Possibly modified WP_query
* http://developer.wordpress.com/2012/05/14/querying-posts-without-query_posts/
*/
function itheme2_home_posts( $query = false ) {
// Bail if not home, not a query, not main query, or no featured posts
if ( ! is_home() && ! is_a( $query, 'WP_Query' ) && ! $query->is_main_query() && ! itheme2_featuring_posts() )
return;
// Exclude featured posts from the main query
$query->set( 'post__not_in', itheme2_featuring_posts() );
// Note the we aren't returning anything.
// 'pre_get_posts' is a byref action; we're modifying the query directly.
}
add_action( 'pre_get_posts', 'itheme2_home_posts' );
/**
* Test to see if any posts meet our conditions for featuring posts.
* Current conditions are:
*
* - sticky posts
* - with featured thumbnails
*
* We store the results of the loop in a transient, to prevent running this
* extra query on every page load. The results are an array of post ID's that
* match the result above. This gives us a quick way to loop through featured
* posts again later without needing to query additional times later.
*/
function itheme2_featuring_posts() {
if ( false === ( $featured_post_ids = get_transient( 'featured_post_ids' ) ) ) {
// Proceed only if sticky posts exist.
if ( get_option( 'sticky_posts' ) ) {
$featured_args = array(
'post__in' => get_option( 'sticky_posts' ),
'post_status' => 'publish',
'no_found_rows' => true
);
// The Featured Posts query.
$featured = new WP_Query( $featured_args );
// Proceed only if published posts with thumbnails exist
if ( $featured->have_posts() ) {
while ( $featured->have_posts() ) {
$featured->the_post();
if ( has_post_thumbnail( $featured->post->ID ) ) {
$featured_post_ids[] = $featured->post->ID;
}
}
set_transient( 'featured_post_ids', $featured_post_ids );
}
}
}
return $featured_post_ids;
}
function ace_display_featured_post() {
$featured_args = array(
'post__in' => get_option( 'sticky_posts' ),
'post_status' => 'publish',
'no_found_rows' => true,
'posts_per_page' => 1
);
// The Featured Posts query.
$featured = new WP_Query( $featured_args );
// Proceed only if published posts with thumbnails exist
if ( $featured->have_posts() ) {
while ( $featured->have_posts() ) {
$featured->the_post();
if ( has_post_thumbnail( $featured->post->ID ) ) { ?>
<div id="featured-post">
<div class="featured-post-image"><?php the_post_thumbnail( 'featured-thumb' ); ?></div>
<div class="featured-post-excerpt"><?php the_excerpt(); ?></div>
</div>
<?php }
}
// Reset the post data
wp_reset_postdata();
}
}
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