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| <?php | |
| // Example meta box field | |
| $cmb->add_field( array( | |
| 'name' => 'Test Select', | |
| 'id' => 'test_select', | |
| 'type' => 'pw_multiselect', | |
| 'options_cb' => 'iweb_get_cmb2_post_options', | |
| 'wp_query_args' => array( | |
| 'post_type' => 'page', | |
| ), | |
| ) ); | |
| /** | |
| * Get a list of posts. | |
| * | |
| * Generic function to return an array of posts formatted for CMB2. Simply pass | |
| * in your WP_Query arguments and get back a beautifully formatted CMB2 options | |
| * array. | |
| * | |
| * Usage: | |
| * | |
| * $cmb->add_field( array( | |
| * 'name' => 'Test Select', | |
| * 'id' => $prefix . 'test_select', | |
| * 'type' => 'select', | |
| * 'options_cb' => 'iweb_get_cmb2_post_options', | |
| * 'wp_query_args' => array( | |
| * 'post_type' => 'page', | |
| * ), | |
| * ) ); | |
| * | |
| * @param CMB2_Field $field The field object. | |
| * | |
| * @return array An array of options that matches the CMB2 options array. | |
| */ | |
| function iweb_get_cmb2_post_options( $field ) { | |
| $defaults = array( | |
| 'posts_per_page' => -1, | |
| 'no_found_rows' => true, | |
| 'cache_results' => false, | |
| 'orderby' => 'menu_order title', | |
| 'order' => 'ASC', | |
| ); | |
| $args = $field->args( 'wp_query_args' ); | |
| $args = is_array( $args ) ? $args : array(); | |
| $args = array_replace_recursive( $defaults, $args ); | |
| $posts = new WP_Query( $args ); | |
| $post_options = array(); | |
| if ( $posts->have_posts() ) { | |
| $posts_with_hierarchy = iweb_build_post_tree( $posts->posts ); | |
| $post_options = wp_list_pluck( $posts_with_hierarchy, 'post_title', 'ID' ); | |
| } | |
| return $post_options; | |
| } | |
| /** | |
| * Sort posts into a tree structure to show post hierarchy. | |
| * | |
| * In order to show hierarchical posts, we recursively build an options array, | |
| * prepending the post title with a depth indicator to give the post some | |
| * context. | |
| * | |
| * @param array $posts Array containing WP_Post objects. | |
| * @param int $parent_id The current parent. | |
| * @param int $level The current level. | |
| * | |
| * @return array | |
| */ | |
| function iweb_build_post_tree( $posts, $parent_id = 0, $level = 0 ) { | |
| $branch = array(); | |
| foreach ( $posts as $post ) { | |
| if ( $parent_id == $post->post_parent ) { | |
| $post->post_title = str_repeat( '— ', $level ) . $post->post_title; | |
| $branch[] = $post; | |
| $children = iweb_build_post_tree( $posts, $post->ID, $level + 1 ); | |
| if ( ! empty( $children ) ) { | |
| foreach ( $children as $child ) { | |
| $branch[] = $child; | |
| } | |
| } | |
| } | |
| } | |
| return $branch; | |
| } |
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