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<?php |
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/** |
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* Admin Bulk Actions |
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* |
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* Add bulk actions to post types edit screens. |
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* Based on https://github.com/Seravo/wp-custom-bulk-actions |
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* |
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* @package SimpleCalendar/Admin |
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*/ |
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namespace SimpleCalendar\Admin; |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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/** |
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* Admin bulk actions. |
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*/ |
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class Bulk_Actions { |
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/** |
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* Target post type. |
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* |
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* @access public |
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* @var string |
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*/ |
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public $bulk_action_post_type = ''; |
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/** |
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* Bulk actions. |
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* |
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* @access private |
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* @var array |
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*/ |
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private $actions = array(); |
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/** |
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* Constructor. |
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* |
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* @since 3.0.0 |
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* |
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* @param string $post_type |
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*/ |
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public function __construct( $post_type ) { |
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$this->bulk_action_post_type = post_type_exists( $post_type ) ? $post_type : ''; |
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} |
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/** |
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* Define all your custom bulk actions and corresponding callbacks |
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* Define at least $menu_text and $callback parameters |
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* |
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* @since 3.0.0 |
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* |
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* @param array $args |
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*/ |
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public function register_bulk_action( $args ) { |
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$func = array(); |
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$func['action_name'] = isset( $args['action_name'] ) ? sanitize_key( $args['action_name'] ) : ''; |
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$func['callback'] = isset( $args['callback'] ) ? $args['callback'] : ''; |
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$func['menu_text'] = isset( $args['menu_text'] ) ? esc_attr( $args['menu_text'] ) : ''; |
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$func['admin_notice'] = isset( $args['admin_notice'] ) ? esc_attr( $args['admin_notice'] ) : ''; |
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if ( $func['action_name'] && $func['callback'] ) { |
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$this->actions[ $func['action_name'] ] = $func; |
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} |
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} |
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/** |
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* Init. |
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* |
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* Callbacks need to be registered before add_actions. |
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* |
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* @since 3.0.0 |
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*/ |
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public function init() { |
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if ( is_admin() ) { |
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add_action( 'admin_footer-edit.php', array( $this, 'custom_bulk_admin_footer' ) ); |
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add_action( 'load-edit.php', array( $this, 'custom_bulk_action' ) ); |
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add_action( 'admin_notices', array( $this, 'custom_bulk_admin_notices' ) ); |
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} |
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} |
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/** |
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* Step 1: add the custom Bulk Action to the select menus. |
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* |
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* @since 3.0.0 |
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*/ |
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public function custom_bulk_admin_footer() { |
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global $post_type; |
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// Only permit actions with defined post type. |
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if ( $post_type == $this->bulk_action_post_type ) { |
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?> |
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<script type="text/javascript"> |
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jQuery( document ).ready( function() { |
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<?php foreach ( $this->actions as $action_name => $action ) : ?> |
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jQuery( '<option>' ).val( '<?php echo $action_name ?>' ).text( '<?php echo $action['menu_text'] ?>').appendTo( 'select[name="action"]' ); |
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jQuery( '<option>' ).val( '<?php echo $action_name ?>' ).text( '<?php echo $action['menu_text'] ?>').appendTo( 'select[name="action2"]' ); |
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<?php endforeach; ?> |
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} ); |
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</script> |
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<?php |
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} |
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} |
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/** |
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* Step 2: handle the custom Bulk Action. |
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* |
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* Based on the post http://wordpress.stackexchange.com/questions/29822/custom-bulk-action |
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* |
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* @since 3.0.0 |
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*/ |
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public function custom_bulk_action() { |
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global $typenow; |
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$post_type = $typenow; |
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if ( $post_type == $this->bulk_action_post_type ) { |
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// Get the action. |
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// Depending on your resource type this could be WP_Users_List_Table, WP_Comments_List_Table, etc. |
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$wp_list_table = _get_list_table( 'WP_Posts_List_Table' ); |
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$action = $wp_list_table->current_action(); |
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// Allow only defined actions. |
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$allowed_actions = array_keys( $this->actions ); |
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if ( ! in_array( $action, $allowed_actions ) ) { |
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return; |
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} |
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// Security check. |
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check_admin_referer( 'bulk-posts' ); |
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// Make sure ids are submitted. |
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// Depending on the resource type, this may be 'media' or 'ids'. |
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if ( isset( $_REQUEST['post'] ) ) { |
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$post_ids = array_map( 'intval', $_REQUEST['post'] ); |
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} |
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if ( empty( $post_ids ) ) { |
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return; |
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} |
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// This is based on wp-admin/edit.php. |
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$sendback = remove_query_arg( |
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array( 'exported', 'untrashed', 'deleted', 'ids' ), |
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wp_get_referer() |
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); |
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if ( ! $sendback ) { |
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$sendback = admin_url( "edit.php?post_type=$post_type" ); |
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} |
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$pagenum = $wp_list_table->get_pagenum(); |
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$sendback = add_query_arg( 'paged', $pagenum, $sendback ); |
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// Check that we have anonymous function as a callback. |
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$anon_fns = array_filter( $this->actions[ $action ], function( $el ) { |
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return $el instanceof \Closure; |
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} ); |
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if ( count( $anon_fns ) > 0 ) { |
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$this->actions[ $action ]['callback']( $post_ids ); |
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} else { |
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call_user_func( $this->actions[ $action ]['callback'], $post_ids ); |
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} |
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$sendback = add_query_arg( |
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array( 'success_action' => $action, 'ids' => join( ',', $post_ids ) ), |
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$sendback |
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); |
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$sendback = remove_query_arg( |
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array( 'action', 'paged', 'mode', 'action2', 'tags_input', 'post_author', 'comment_status', 'ping_status', '_status', 'post', 'bulk_edit', 'post_view' ), |
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$sendback |
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); |
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wp_redirect( $sendback ); |
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exit; |
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} |
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} |
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/** |
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* Step 3: display an admin notice after action. |
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* |
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* @since 3.0.0 |
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*/ |
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public function custom_bulk_admin_notices() { |
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global $post_type, $pagenow; |
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if ( isset( $_REQUEST['ids'] ) ) { |
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$post_ids = explode( ',', $_REQUEST['ids'] ); |
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} |
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// Make sure ids are submitted. |
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// Depending on the resource type, this may be 'media' or 'ids'. |
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if ( empty( $post_ids ) ) { |
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return; |
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} |
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$post_ids_count = is_array( $post_ids ) ? count( $post_ids ) : 1; |
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if ( $pagenow == 'edit.php' && $post_type == $this->bulk_action_post_type ) { |
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if ( isset( $_REQUEST['success_action'] ) ) { |
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// Print notice in admin bar. |
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$message = $this->actions[ $_REQUEST['success_action'] ]['admin_notice']; |
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if ( is_array( $message ) ) { |
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$message = sprintf( _n( $message['single'], $message['plural'], $post_ids_count, 'google-calendar-events' ), $post_ids_count ); |
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} |
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$class = 'updated notice is-dismissible above-h2'; |
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if ( ! empty( $message ) ) { |
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echo "<div class=\"{$class}\"><p>{$message}</p></div>"; |
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} |
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} |
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} |
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} |
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} |
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Instead of relying on
global
state, we recommend one of these alternatives:1. Pass all data via parameters
2. Create a class that maintains your state