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[英]How to parse value from wordpress $wpdb->get_results()?
[英]How to get posts order by menu_order in WordPress using $wpdb->get_results()?
我有以下 function 在其中构建自己的父子导航。
我面临的问题是我无法通过 menu_order 对子项进行排序(因此,通过重新排序时可以在每个页面上设置的 Order 属性进行排序)。 任何有关如何做到这一点的提示将不胜感激。
function wph_get_page_tree( $page_id ){
global $wpdb;
$tree_data = [];
$tree_data[$page_id] = ['title' => get_post($page_id)->post_title, 'ID' => $page_id];
// get 1 level childs
$level_1_childs = [];
$all_childs = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_title FROM {$wpdb->posts} WHERE post_parent = %d && post_type= 'page' && post_status='publish' ", $page_id ) );
foreach( $all_childs as $single_2_level ){
$level_1_childs[$single_2_level->ID] = ['title' => $single_2_level->post_title, 'ID' => $single_2_level->ID];
//$level_1_childs[$single_2_level->ID] = $single_2_level->post_title;
$all_sub_childs = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_title FROM {$wpdb->posts} WHERE post_parent = %d && post_type= 'page' && post_status='publish' ", $single_2_level->ID ) );
$level_2_childs = [];
foreach( $all_sub_childs as $single_3_level ){
$level_2_childs[$single_3_level->ID] = ['title' => $single_3_level->post_title, 'ID' => $single_3_level->ID];
}
//var_dump( $level_1_childs );
$level_1_childs[$single_2_level->ID]['childs'] = $level_2_childs;
//var_dump( $level_1_childs );
}
$tree_data[$page_id]['childs'] = $level_1_childs;
//var_dump( $tree_data );
return $tree_data;
}
您需要将ORDER BY {$wpdb->posts}.menu_order ASC
传递给您的查询。 检查下面的代码。
function wph_get_page_tree( $page_id ){
global $wpdb;
$tree_data = [];
$tree_data[$page_id] = ['title' => get_post($page_id)->post_title, 'ID' => $page_id];
// get 1 level childs
$level_1_childs = [];
$all_childs = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_title FROM {$wpdb->posts} WHERE post_parent = %d && post_type= 'page' && post_status='publish' ORDER BY {$wpdb->posts}.menu_order ASC ", $page_id ) );
foreach( $all_childs as $single_2_level ){
$level_1_childs[$single_2_level->ID] = ['title' => $single_2_level->post_title, 'ID' => $single_2_level->ID];
//$level_1_childs[$single_2_level->ID] = $single_2_level->post_title;
$all_sub_childs = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_title FROM {$wpdb->posts} WHERE post_parent = %d && post_type= 'page' && post_status='publish' ORDER BY {$wpdb->posts}.menu_order ASC ", $single_2_level->ID ) );
$level_2_childs = [];
foreach( $all_sub_childs as $single_3_level ){
$level_2_childs[$single_3_level->ID] = ['title' => $single_3_level->post_title, 'ID' => $single_3_level->ID];
}
//var_dump( $level_1_childs );
$level_1_childs[$single_2_level->ID]['childs'] = $level_2_childs;
//var_dump( $level_1_childs );
}
$tree_data[$page_id]['childs'] = $level_1_childs;
//var_dump( $tree_data );
return $tree_data;
}
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