WordPress List Table Example

wp-list-table.md

WordPress List Table

<?php
namespace Hasinur\Library\Admin;

use WP_List_Table;

class BookListTable extends WP_List_Table {
    public $books = [];

    public function __construct() {
        parent::__construct();
        $this->set_books();
    }

    public function prepare_items() {

        $per_page     = 2;
        $current_page = $this->get_pagenum();
        $offset       = ( $current_page - 1 ) * $per_page;

        $total_items = count( $this->books );

        $this->set_pagination_args( [
            'total_items' => $total_items,
            'per_page'    => $per_page,
        ] );

        $columns     = $this->get_columns();
        $this->items = $this->get_items( [
            'offset' => $offset,
            'limit'  => $per_page,
        ] );
        $this->_column_headers = [$columns];

    }

    public function get_bulk_actions() {
        return [
            'delete' => __('Delete', 'library'),
        ];
    }

    public function get_items( $args ) {
        $defaults = [
            'offset' => 0,
            'limit'  => 2,
        ];

        $args = wp_parse_args( $args );

        return array_slice( $this->books, $args['offset'], $args['limit'] );
    }

    public function get_columns() {
        return [
            'cb'        => '<input type="checkbox"/>',
            'title'     => __( 'Title', 'library' ),
            'author'    => __( 'Author', 'library' ),
            'published' => __( 'Published', 'library' ),
        ];
    }

    public function column_default( $item, $column_name ) {
        return isset( $item[$column_name] ) ? $item[$column_name] : '';
    }

    public function column_cb( $item ) {
        return '<input type="checkbox" name="books[]" value="' . $item['id'] . '">';
    }

    public function handle_row_actions( $item, $column_name, $primary ) {
        if ( $primary != $column_name ) {
            return;
        }

        $actions['edit']   = sprintf( '<a href="%1$s">%2$s</a>', 'https://google.com', __( 'Edit', 'library' ) );
        $actions['delete'] = sprintf( '<a href="%1$s">%2$s</a>', 'https://google.com', __( 'Delete', 'library' ) );

        $actions =  apply_filters('books_row_actions', $actions);

        return $this->row_actions($actions);
    }

    private function set_books() {
        $items = [
            [
                'id'        => 1,
                'title'     => __( 'History Of Bangladesh', 'library' ),
                'author'    => __( 'Hasinur Rahman', 'library' ),
                'published' => '2021',
            ],
            [
                'id'        => 2,
                'title'     => __( 'Three years of Programming', 'library' ),
                'author'    => __( 'John Doe', 'library' ),
                'published' => '1985',
            ],
            [
                'id'        => 3,
                'title'     => __( 'Population Problem', 'library' ),
                'author'    => __( 'Jahangir Alam', 'library' ),
                'published' => '1920',
            ],
            [
                'id'        => 4,
                'title'     => __( 'Nature of Bangladesh', 'library' ),
                'author'    => __( 'Anderson Rasel', 'library' ),
                'published' => '1935',
            ],
        ];

        $this->books = $items;
    }
}