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<?php
namespace Timber;
use Timber\Helper;
use Timber\PostCollection;
// Exit if accessed directly
if ( !defined('ABSPATH') ) {
exit;
}
class QueryIterator implements \Iterator, \Countable {
/**
*
*
* @var WP_Query
*/
private $_query = null;
private $_posts_class = 'Timber\Post';
public function __construct( $query = false, $posts_class = 'Timber\Post' ) {
add_action('pre_get_posts', array($this, 'fix_number_posts_wp_quirk'));
add_action('pre_get_posts', array($this, 'fix_cat_wp_quirk'));
if ( $posts_class ) {
$this->_posts_class = $posts_class;
}
if ( is_a($query, 'WP_Query') ) {
// We got a full-fledged WP Query, look no further!
$the_query = $query;
} elseif ( false === $query ) {
// If query is explicitly set to false, use the main loop
global $wp_query;
$the_query = & $wp_query;
//if we're on a custom posts page?
$the_query = self::handle_maybe_custom_posts_page($the_query);
} elseif ( Helper::is_array_assoc($query) || (is_string($query) && strstr($query, '=')) ) {
// We have a regularly formed WP query string or array to use
$the_query = new \WP_Query($query);
} elseif ( is_numeric($query) || is_string($query) ) {
// We have what could be a post name or post ID to pull out
$the_query = self::get_query_from_string($query);
} elseif ( is_array($query) && count($query) && (is_integer($query[0]) || is_string($query[0])) ) {
// We have a list of pids (post IDs) to extract from
$the_query = self::get_query_from_array_of_ids($query);
} elseif ( is_array($query) && empty($query) ) {
// it's an empty array
$the_query = array();
} else {
Helper::error_log('I have failed you! in '.basename(__FILE__).'::'.__LINE__);
Helper::error_log($query);
// We have failed hard, at least let get something.
$the_query = new \WP_Query();
}
$this->_query = $the_query;
}
public function post_count() {
return $this->_query->post_count;
}
/**
* Gets the amount of found posts in the query.
*
* @api
* @since 1.11.1
*
* @return int
*/
public function found_posts() {
return $this->_query->found_posts;
}
public function get_pagination( $prefs ) {
return new Pagination($prefs, $this->_query);
}
public function get_posts( $return_collection = false ) {
if ( isset($this->_query->posts) ) {
$posts = new PostCollection($this->_query->posts, $this->_posts_class);
return ($return_collection) ? $posts : $posts->get_posts();
}
}
//
// GET POSTS
//
public static function get_query_from_array_of_ids( $query = array() ) {
if ( !is_array($query) || !count($query) ) {
return null;
}
return new \WP_Query(array(
'post_type'=> 'any',
'ignore_sticky_posts' => true,
'post__in' => $query,
'orderby' => 'post__in',
'nopaging' => true
));
}
public static function get_query_from_string( $string = '' ) {
$post_type = false;
if ( is_string($string) && strstr($string, '#') ) {
//we have a post_type directive here
list($post_type, $string) = explode('#', $string);
}
$query = array(
'post_type' => ($post_type) ? $post_type : 'any'
);
if ( is_numeric($string) ) {
$query['p'] = $string;
} else {
$query['name'] = $string;
}
return new \WP_Query($query);
}
//
// Iterator Interface
//
public function valid(): bool {
return $this->_query->have_posts();
}
#[\ReturnTypeWillChange]
public function current() {
global $post;
$this->_query->the_post();
// Sets up the global post, but also return the post, for use in Twig template
$posts_class = $this->_posts_class;
return new $posts_class($post);
}
/**
* Don't implement next, because current already advances the loop
*/
#[\ReturnTypeWillChange]
final public function next() {}
#[\ReturnTypeWillChange]
public function rewind() {
$this->_query->rewind_posts();
}
#[\ReturnTypeWillChange]
public function key() {
$this->_query->current_post;
}
//get_posts users numberposts
public static function fix_number_posts_wp_quirk( $query ) {
if ( isset($query->query) && isset($query->query['numberposts'])
&& !isset($query->query['posts_per_page']) ) {
$query->set('posts_per_page', $query->query['numberposts']);
}
return $query;
}
//get_posts uses category, WP_Query uses cat. Why? who knows...
public static function fix_cat_wp_quirk( $query ) {
if ( isset($query->query) && isset($query->query['category'])
&& !isset($query->query['cat']) ) {
$query->set('cat', $query->query['category']);
unset($query->query['category']);
}
return $query;
}
/**
* this will test for whether a custom page to display posts is active, and if so, set the query to the default
* @param WP_Query $query the original query recived from WordPress
* @return WP_Query
*/
public static function handle_maybe_custom_posts_page( $query ) {
if ( $custom_posts_page = get_option('page_for_posts') ) {
if ( isset($query->query['p']) && $query->query['p'] == $custom_posts_page ) {
return new \WP_Query(array('post_type' => 'post'));
}
}
return $query;
}
/**
* Count elements of an object.
*
* Necessary for some Twig `loop` variable properties.
* @see http://twig.sensiolabs.org/doc/tags/for.html#the-loop-variable
* @link http://php.net/manual/en/countable.count.php
* @return int The custom count as an integer.
* The return value is cast to an integer.
*/
public function count(): int {
return $this->post_count();
}
}