PHP WP_Query::is_attachment方法代码示例

 /**
  * @param WP_Query $query
  * @param String   $pagenow
  * @return bool
  */
 private function is_join_filter_active($query, $pagenow)
 {
     global $sitepress_settings;
     $is_media_upload = $pagenow === 'media-upload.php';
     $is_attachment_and_cant_be_translated = $query->is_attachment() ? !$this->is_media_and_cant_be_translated('attachment') : false;
     return !$is_media_upload || !$is_attachment_and_cant_be_translated || isset($query->queried_object) && isset($query->queried_object->ID) && $query->queried_object->ID == $sitepress_settings['urls']['root_page'];
 }

 /**
  * Get the fork's parent post, set up a query, and load correct template.
  *
  * Duplicates the functionality of /wp-includes/template-loader.php and includes
  * a lot of copypasta, but that's only to ensure that it follows the same logic.
  *
  */
 function choose_template()
 {
     $p = get_queried_object_id();
     if (get_post_type($p) !== 'fork') {
         return;
     }
     $pp = get_post($p)->post_parent;
     $parent = get_post($pp);
     if ($parent->post_type == 'page') {
         $query = array('page_id' => $pp);
     } else {
         $query = array('p' => $pp);
     }
     $t = new WP_Query($query);
     $template = false;
     if ($t->is_404() && ($template = get_404_template())) {
     } elseif ($t->is_search() && ($template = get_search_template())) {
     } elseif ($t->is_tax() && ($template = get_taxonomy_template())) {
     } elseif ($t->is_front_page() && ($template = get_front_page_template())) {
     } elseif ($t->is_home() && ($template = get_home_template())) {
     } elseif ($t->is_attachment() && ($template = get_attachment_template())) {
         remove_filter('the_content', 'prepend_attachment');
     } elseif ($t->is_single() && ($template = get_single_template())) {
     } elseif ($t->is_page && ($template = get_page_template())) {
     } elseif ($t->is_category() && ($template = get_category_template())) {
     } elseif ($t->is_tag() && ($template = get_tag_template())) {
     } elseif ($t->is_author() && ($template = get_author_template())) {
     } elseif ($t->is_date() && ($template = get_date_template())) {
     } elseif ($t->is_archive() && ($template = get_archive_template())) {
     } elseif ($t->is_comments_popup() && ($template = get_comments_popup_template())) {
     } elseif ($t->is_paged() && ($template = get_paged_template())) {
     } else {
         $template = get_index_template();
     }
     if ($template = apply_filters('template_include', $template)) {
         include $template;
     }
     return;
 }

 /**
  * @param string $where
  * @param WP_Query $query
  *
  * @return string
  */
 function posts_where_filter($where, $query)
 {
     global $pagenow, $wp_taxonomies, $sitepress, $sitepress_settings;
     //exceptions
     $post_type = false;
     if (isset($query->queried_object) && isset($query->queried_object->ID) && $query->queried_object->ID == $sitepress_settings['urls']['root_page']) {
         return $where;
     }
     // determine post type
     $debug_backtrace = $this->get_backtrace(0, true, false);
     //Limit to a maximum level?
     foreach ($debug_backtrace as $o) {
         if ($o['function'] == 'apply_filters_ref_array' && $o['args'][0] == 'posts_where') {
             $post_type = $o['args'][1][1]->query_vars['post_type'];
             break;
         }
     }
     // case of taxonomy archive
     if (empty($post_type) && $query->is_tax()) {
         $tax = $query->get('taxonomy');
         $post_type = $wp_taxonomies[$tax]->object_type;
         foreach ($post_type as $k => $v) {
             if (!$this->is_translated_post_type($v)) {
                 unset($post_type[$k]);
             }
         }
         if (empty($post_type)) {
             return $where;
         }
         // don't filter
     }
     if (!$post_type) {
         $post_type = 'post';
     }
     if (is_array($post_type) && !empty($post_type)) {
         $none_translated = true;
         foreach ($post_type as $ptype) {
             if ($this->is_translated_post_type($ptype)) {
                 $none_translated = false;
             }
         }
         if ($none_translated) {
             return $where;
         }
     } else {
         if (!$this->is_translated_post_type($post_type) && 'any' != $post_type) {
             return $where;
         }
     }
     $attachment_is_translatable = $sitepress->is_translated_post_type('attachment');
     if (($pagenow == 'upload.php' || $pagenow == 'media-upload.php' || $query->is_attachment()) && !$attachment_is_translatable) {
         return $where;
     }
     $current_language = $sitepress->get_current_language();
     $requested_id = false;
     // Fix for when $sitepress->get_current_language() does not return the correct value (e.g. when request is made for an attachment, an iframe or an ajax call)
     if (isset($_REQUEST['attachment_id']) && $_REQUEST['attachment_id']) {
         $requested_id = $_REQUEST['attachment_id'];
     }
     if (isset($_REQUEST['post_id']) && $_REQUEST['post_id']) {
         $requested_id = $_REQUEST['post_id'];
     }
     if ($requested_id) {
         $post_type = get_post_type($requested_id);
         $current_language = $sitepress->get_language_for_element($requested_id, 'post_' . $post_type);
         if (!$current_language) {
             $current_language = $sitepress->get_current_language();
         }
     }
     if ('all' != $this->this_lang) {
         if ('any' == $post_type) {
             $condition = " AND (t.language_code='" . esc_sql($current_language) . "' OR t.language_code IS NULL )";
         } else {
             $condition = " AND t.language_code='" . esc_sql($current_language) . "'";
         }
     } else {
         $condition = '';
     }
     $where .= $condition;
     return $where;
 }

 /**
  * @param WP_Query $query
  * @param String   $pagenow
  *
  * @return bool
  */
 private function is_join_filter_active($query, $pagenow)
 {
     $is_attachment_and_cant_be_translated = $query->is_attachment() ? $this->is_media_and_cant_be_translated('attachment') : false;
     return $pagenow !== 'media-upload.php' && !$is_attachment_and_cant_be_translated && !$this->is_queried_object_root($query);
 }

//.........这里部分代码省略.........
         // taxonomy-[taxonomy]-[term-slug]
         // taxonomy-[taxonomy]
         // taxonomy-[post-type]
         // taxonomy
         // archive-[post-type]
         // [post-type]
         // archive
         $term = get_queried_object();
         if (!empty($term->slug)) {
             $result[] = 'taxonomy-' . $term->taxonomy . '-' . $term->slug;
             $result[] = 'taxonomy-' . $term->taxonomy;
         }
         if ($query_post_type) {
             $result[] = 'taxonomy-' . $query_post_type;
         }
         $result[] = 'taxonomy';
         if ($query_post_type) {
             $result[] = 'archive-' . $query_post_type;
             $result[] = $query_post_type;
         }
         $result[] = 'archive';
     } elseif ($wp_query->is_date()) {
         // date-[post-type]
         // date
         // archive-[post-type]
         // [post-type]
         // archive
         if ($query_post_type) {
             $result[] = 'date-' . $query_post_type;
         }
         $result[] = 'date';
         if ($query_post_type) {
             $result[] = 'archive-' . $query_post_type;
             $result[] = $query_post_type;
         }
         $result[] = 'archive';
     } elseif ($wp_query->is_archive()) {
         // archive-[post-type]
         // [post-type]
         // archive
         if ($query_post_type) {
             $result[] = 'archive-' . $query_post_type;
             $result[] = $query_post_type;
         }
         $result[] = 'archive';
     } elseif ($wp_query->is_page()) {
         // page-[parent-slug]-[post-slug]
         // page-[post-slug]
         // [page-template-name]
         // page
         // singular
         if ($post->post_parent) {
             if ($parent_slug = get_slug($post->post_parent)) {
                 $result[] = 'page-' . $parent_slug . '-' . $post_slug;
             }
         }
         $result[] = 'page-' . $post_slug;
         // page templates can have their unique names, let's add them before the fallback
         if ($page_template_name = get_page_template_name($post->ID)) {
             $result[] = $page_template_name;
         }
         $result[] = 'page';
         $result[] = 'singular';
     } elseif ($wp_query->is_attachment()) {
         // single-attachment-[slugfied-long-mime-type]
         // single-attachment-[slugfied-short-mime-type]
         // single-attachment
         // attachment
         // single
         // singular
         // slugfied-long-mime-type = image-jpeg
         // slugfied-short-mime-type = jpeg
         if (!empty($post->post_mime_type)) {
             $result[] = 'single-attachment-' . \Bond\to_slug($post->post_mime_type);
             $mime = explode('/', $post->post_mime_type);
             if (count($mime) > 1) {
                 $result[] = 'single-attachment-' . \Bond\to_slug($mime[1]);
             }
             $result[] = 'single-attachment-' . $mime[0];
         }
         $result[] = 'single-attachment';
         $result[] = 'attachment';
         $result[] = 'single';
         $result[] = 'singular';
     } elseif ($wp_query->is_single()) {
         // single-[post-type]-[post-slug]
         // single-[post-type]
         // [post-type]
         // single
         // singular
         $result[] = 'single-' . $post_type . '-' . $post_slug;
         $result[] = 'single-' . $post_type;
         $result[] = $post_type;
         $result[] = 'single';
         $result[] = 'singular';
     }
     // everything is handled, allow a filter and go
     $result = apply_filters($this->hooks_prefix . '/lookup_order', $result);
     return $result;
 }