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<?php
namespace Timber;
use Timber\PostCollection;
use Timber\QueryIterator;
class PostGetter {
/**
* @param mixed $query
* @param string|array $PostClass
* @return \Timber\Post|bool
*/
public static function get_post( $query = false, $PostClass = '\Timber\Post' ) {
// if a post id is passed, grab the post directly
if ( is_numeric($query) ) {
$post_type = get_post_type($query);
$PostClass = PostGetter::get_post_class($post_type, $PostClass);
$post = new $PostClass($query);
// get the latest revision if we're dealing with a preview
$posts = PostCollection::maybe_set_preview(array($post));
if ( $post = reset($posts) ) {
return $post;
}
}
$posts = self::get_posts($query, $PostClass);
if ( is_iterable($posts) && $post = reset($posts) ) {
return $post;
}
return false;
}
/**
* get_post_id_by_name($post_name)
* @internal
* @since 1.5.0
* @param string $post_name
* @return int
*/
public static function get_post_id_by_name( $post_name ) {
global $wpdb;
$query = $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_name = %s LIMIT 1", $post_name);
$result = $wpdb->get_row($query);
if ( !$result ) {
return null;
}
return $result->ID;
}
public static function get_posts( $query = false, $PostClass = '\Timber\Post', $return_collection = false ) {
/**
* Filters whether Timber::get_posts() should mirror WordPress’s get_posts() function.
*
* When passing `true` in this filter, Timber will set the following parameters for your query:
*
* - `ignore_sticky_posts = true`
* - `suppress_filters = true`
* - `no_found_rows = true`
*
* @since 1.9.5
* @example
* ```php
* add_filter( 'timber/get_posts/mirror_wp_get_posts', '__return_true' );
* ```
*
* @param bool $mirror Whether to mirror the `get_posts()` function of WordPress with all its
* parameters. Default `false`.
*/
$mirror_wp_get_posts = apply_filters( 'timber/get_posts/mirror_wp_get_posts', false );
if ( $mirror_wp_get_posts ) {
add_filter( 'pre_get_posts', array('Timber\PostGetter', 'set_query_defaults') );
}
$posts = self::query_posts($query, $PostClass);
return apply_filters('timber_post_getter_get_posts', $posts->get_posts($return_collection));
}
public static function query_post( $query = false, $PostClass = '\Timber\Post' ) {
$posts = self::query_posts($query, $PostClass);
if ( method_exists($posts, 'current') && $post = $posts->current() ) {
return $post;
}
}
/**
* Sets some default values for those parameters for the query when not set. WordPress's get_posts sets a few of
* these parameters true by default (compared to WP_Query), we should do the same.
* @internal
* @param \WP_Query $query
* @return \WP_Query
*/
public static function set_query_defaults( $query ) {
if ( isset($query->query) && !isset($query->query['ignore_sticky_posts']) ) {
$query->set('ignore_sticky_posts', true);
}
if ( isset($query->query) && !isset($query->query['suppress_filters']) ) {
$query->set('suppress_filters', true);
}
if ( isset($query->query) && !isset($query->query['no_found_rows']) ) {
$query->set('no_found_rows', true);
}
remove_filter('pre_get_posts', array('Timber\PostGetter', 'set_query_defaults'));
return $query;
}
/**
* @param mixed $query
* @param string|array $PostClass
* @return PostCollection | QueryIterator
*/
public static function query_posts( $query = false, $PostClass = '\Timber\Post' ) {
if ( $type = self::get_class_for_use_as_timber_post($query) ) {
$PostClass = $type;
if ( self::is_post_class_or_class_map($query) ) {
$query = false;
}
}
if ( is_object($query) && !is_a($query, 'WP_Query') ) {
// The only object other than a query is a type of post object
$query = array($query);
}
if ( is_array($query) && count($query) && isset($query[0]) && is_object($query[0]) ) {
// We have an array of post objects that already have data
return new PostCollection($query, $PostClass);
} else {
// We have a query (of sorts) to work with
$tqi = new QueryIterator($query, $PostClass);
return $tqi;
}
}
/**
* @return integer the ID of the post in the loop
*/
public static function loop_to_id() {
if ( !self::wp_query_has_posts() ) { return false; }
global $wp_query;
$post_num = property_exists($wp_query, 'current_post')
? $wp_query->current_post + 1
: 0
;
if ( !isset($wp_query->posts[$post_num]) ) { return false; }
return $wp_query->posts[$post_num]->ID;
}
/**
* @return bool
*/
public static function wp_query_has_posts() {
global $wp_query;
return ($wp_query && property_exists($wp_query, 'posts') && $wp_query->posts);
}
/**
* @param string $post_type
* @param string|array $post_class
*
* @return string
*/
public static function get_post_class( $post_type, $post_class = '\Timber\Post' ) {
$post_class = apply_filters('Timber\PostClassMap', $post_class);
$post_class_use = '\Timber\Post';
if ( is_array($post_class) ) {
if ( isset($post_class[$post_type]) ) {
$post_class_use = $post_class[$post_type];
}
} elseif ( is_string($post_class) ) {
$post_class_use = $post_class;
} else {
Helper::error_log('Unexpected value for PostClass: '.print_r($post_class, true));
}
if ( $post_class_use === '\Timber\Post' || $post_class_use === 'Timber\Post' ) {
return $post_class_use;
}
if ( !class_exists($post_class_use) || !is_subclass_of($post_class_use, '\Timber\Post') ) {
Helper::error_log('Class '.$post_class_use.' either does not exist or implement \Timber\Post');
return '\Timber\Post';
}
return $post_class_use;
}
/**
* @param string|array $arg
* @return boolean
*/
public static function is_post_class_or_class_map( $arg ) {
$maybe_type = self::get_class_for_use_as_timber_post($arg);
if ( is_array($arg) && isset($arg['post_type']) ) {
//the user has passed a true WP_Query-style query array that needs to be used later, so the $arg is not a class map or post class
return false;
}
if ( $maybe_type ) {
return true;
}
return false;
}
/**
* @param string|array $arg
* @return string|bool if a $type is found; false if not
*/
public static function get_class_for_use_as_timber_post( $arg ) {
$type = false;
if ( is_string($arg) ) {
$type = $arg;
} else if ( is_array($arg) && isset($arg['post_type']) ) {
$type = $arg['post_type'];
}
if ( !$type ) {
return false;
}
if ( !is_array($type) && class_exists($type) && is_subclass_of($type, '\Timber\Post') ) {
return $type;
}
}
}