WP_List_Table - Custom

wp-list-table-custom.php

<?php
/*
Plugin Name: WordPress - WP_List_Table - Custom
*/
  add_action( 'admin_menu','register_my_custom_menu_page');
function register_my_custom_menu_page(){
 
    global $new_menu_page;
     
   // creating admin menu 
 
    add_menu_page('Career', 'Career', 'edit_posts','career','custom_list_page', get_template_directory_uri().'/images/custom.png', 8 );
 
    $hook=add_submenu_page("career","Custom List","Custom List",'edit_posts', "career", "custom_list_page");
  
   // adding submenu 
    
 $test_hook =  add_submenu_page("career","Custom Detail","Custom Detail",'edit_posts',"custom_detail", "custom_detail_page");
 
   // creating options like per page data(pagination)
  
    add_action( "load-".$hook, 'add_options' ); 
    add_action( "load-".$test_hook, 'add_options' ); 
 
   // Creating help tab 
 
    add_action( 'current_screen','my_admin_add_help_tab');
     
}
function my_admin_add_help_tab() {
 
    $screen = get_current_screen();
 
    // Add my_help_tab if current screen is My Admin Page
 
    $screen->add_help_tab( array(
 
        'id'    => 'my_help_tab',
 
        'title' => 'Webkul Help Tab',
 
        'content'   => '<p>' . __( 'Help Topics Added Here.' ) . '</p>',
 ) );
 }
function add_options() {
 
$option = 'per_page';
 
$args = array(
 
'label' => 'Results',
 
'default' => 10,
 
'option' => 'results_per_page'
 
);
 
add_screen_option( $option, $args );
 
}
function custom_list_page(){
 
if(!class_exists('Link_List_Table')){
 
   require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );
 
}
class Link_List_Table extends WP_List_Table {
 
 
 
   /**
    * Constructor, we override the parent to pass our own arguments
    * We usually focus on three parameters: singular and plural labels, as well as whether the class supports AJAX.
    */
 
    function __construct() {
 
       parent::__construct( array(
 
            'singular'  => 'singular_name',     //singular name of the listed records
 
            'plural'    => 'plural_name',    //plural name of the listed records
 
            'ajax'      => false 
 
      ) );
 
    }
    
    
    public function column_default( $item, $column_name )
 
  {
 
    switch( $column_name ) {
 
        case 'first_column_name':
 
        case 'second_column_name':
 
        case 'third_column_name':
 
        case 'fourth_column_name':
 
            return "<strong>".$item[$column_name]."</strong>";
                 
 
        default:
 
            return print_r( $item, true ) ;
 
    }
 
}
public function get_sortable_columns() {
 
     $sortable_columns = array(
 
            'first_column_name'     => array('first_column_name',true),
            
            'second_column_name' => array('second_column_name',true) ); 
 
            return $sortable_columns;
 }
 
 
 public function get_hidden_columns()
 
    {
        // Setup Hidden columns and return them
        return array();
 
    }
    
    function first_column_name($item) {
   $actions = array(
 
            'edit'      => sprintf('<a href="?page=custom_detail_page&user=%s">Edit</a>',$item['id']),
 
            'trash'    => sprintf('<a href="?page=custom_list_page&action=trash&user=%s">Trash</a>',$item['id']),
 
            );
 
  return sprintf('%1$s %2$s', $item['first_column_name'], $this->row_actions($actions) );
 
}
function get_bulk_actions()
      {
 
        $actions = array(
 
            'trash'    => 'Move To Trash'
        );
 
        return $actions;
    }
public function process_bulk_action()
 
        {  
              global $wpdb;
        if ('trash' === $this->current_action()) {
 
              if (isset($_GET['user'])) {
 
                  if (is_array($_GET['user'])){
 
            foreach ($_GET['user'] as $id) {
 
            if(!empty($id)) { 
 
              wp_trash_post($id);
 
              $table_name = $wpdb->prefix . 'table_name';
             
              $wpdb->query("update $table_name set post_status='trash' WHERE id IN($id)");  
 
              }
 
 
            }
 
            }
 
            else{
 
                  if (!empty($_GET['user'])) { 
                       
                      $id=$_GET['user'];
 
                      wp_trash_post($id);  
 
                      $table_name = $wpdb->prefix . 'table_name';
                     
                      $wpdb->query("update $table_name set post_status='trash' WHERE id =$id");  
 
                      }
 
              }
          }
 
      }
 
    }
    
    
    private function table_data()
   {      
      global $wpdb;
 
       $table_name = $wpdb->prefix . 'table_name';
 
       $data=array();
 
        if(isset($_GET['s']))
          {
           
          $search=$_GET['s'];
 
          $search = trim($search);
 
          $wk_post = $wpdb->get_results("SELECT column_name_one,column_name_two FROM $table_name WHERE column_name_three LIKE '%$search%' and column_name_four='value'");
 
          }
 
        else{
            $wk_post=$wpdb->get_results("SELECT column_name_one,column_name_two FROM $table_name WHERE column_name_three='value'");
        }
 
        $field_name_one = array();
 
        $field_name_two = array();
 
        $i=0;
 
        foreach ($wk_post as $wk_posts) {
 
            $field_name_one[]=$wk_posts->field_name_one;
 
            $field_name_two[]=$wk_posts->field_name_two;
 
            $data[] = array(
 
                    'first_column_name'  => $field_name_one[$i],
 
                    'second_column_name' =>   $field_name_two[$i]   
  
                    );
 
            $i++;
 
        }
 
        return $data;
 
    }
    
    
    
    public function prepare_items()  
     {
 
        global $wpdb;  
 
            $columns = $this->get_columns();
 
            $sortable = $this->get_sortable_columns();
 
            $hidden=$this->get_hidden_columns();
 
            $this->process_bulk_action();
 
            $data = $this->table_data();
             
            $totalitems = count($data);
 
            $user = get_current_user_id();
 
            $screen = get_current_screen();
 
            $option = $screen->get_option('per_page', 'option'); 
 
            $perpage = get_user_meta($user, $option, true);
 
            $this->_column_headers = array($columns,$hidden,$sortable); 
 
            if ( empty ( $per_page) || $per_page < 1 ) {
             
              $per_page = $screen->get_option( 'per_page', 'default' ); 
 
            }
 
 
            function usort_reorder($a,$b){
 
            $orderby = (!empty($_REQUEST['orderby'])) ? $_REQUEST['orderby'] : 'column_name_one'; //If no sort, default to title
 
            $order = (!empty($_REQUEST['order'])) ? $_REQUEST['order'] : 'desc'; //If no order, default to asc
 
            $result = strcmp($a[$orderby], $b[$orderby]); //Determine sort order
 
            return ($order==='asc') ? $result : -$result; //Send final sort direction to usort
 
        }
 
        usort($data, 'usort_reorder');
 
                $totalpages = ceil($totalitems/$perpage); 
 
                $currentPage = $this->get_pagenum();
                 
                $data = array_slice($data,(($currentPage-1)*$perpage),$perpage);
 
                $this->set_pagination_args( array(
 
                "total_items" => $totalitems,
 
                "total_pages" => $totalpages,
 
                "per_page" => $perpage,
            ) );
                 
        $this->items =$data;
    }
 
}
 
 
    $wp_list_table = new Link_List_Table();  
 
        }
        
        
        function custom_detail_page(){ 
echo "this is custom detail page.";        }
        
        
        
        //source: https://webkul.com/blog/create-admin-tables-using-wp_list_table-class/

Thanks. Helpful to me.

How you are calling first_column_name($item) function? How you are getting the item value in that?

@Naren-hybreeder wordpress calls this function automatically and pass the item value in that. You can checkout some wp-list-table tutorial.
e.g. https://supporthost.com/wp-list-table-tutorial/

I have tried the same but it's not calling the first_column_name($item) function.