Author Filter for EE4

//* EE4 Add User Filter 

 add_action('admin_head','woocommerce_js');

function woocommerce_js()
{
echo '<style>
    .authors_custom {
      display:none;
    }
  </style>';
 global $post_type;
   if($_REQUEST['page'] == 'espresso_events' || $_REQUEST['EVT_wp_user'] != ""){
        //get a listing of all users that are 'author' or above
        $user_args = array(
      'show_option_none'=>'All Users',
      //'option_none_value'=>-1,
            //'show_option_all'   => 'All Users',
      //'selected' => -1,
            'orderby'           => 'display_name',
            'order'             => 'ASC',
            //'name'              => 'aurthor_admin_filter',
            'name'              => 'EVT_wp_user',
             'who'               => 'authors',
            'class'               => 'authors_custom',
            'include_selected'  => true
        );
    if(isset($_GET['EVT_wp_user'])){
            //set the selected value to the value of the author
            $user_args['selected'] = (int)sanitize_text_field($_GET['EVT_wp_user']);
        }
    wp_dropdown_users($user_args);
    if(!isset($_REQUEST['action']) ||  ($_REQUEST['action'] == -1 || $_REQUEST['action'] == "default" )){
?>
<script>
jQuery(document).ready(function($) {
  jQuery("#EVT_CAT").after(jQuery("#EVT_wp_user").append() );
  jQuery("#EVT_CAT").after("<input type='hidden' id='hiddenuser' value='<?php echo (isset($_REQUEST['hiddenuser']) &&$_REQUEST['hiddenuser'] != "-1")?$_REQUEST['hiddenuser']:"-1"; ?>' name='hiddenuser'>" );
  jQuery(".authors_custom").css("display","inline-block");
  jQuery( "#EVT_wp_user" ).change(function() {
    if(jQuery(this).val() != "-1"){
      jQuery("#hiddenuser").val(jQuery(this).val());
    }else{
      jQuery("#hiddenuser").val(jQuery(this).val());
    }
  });
  jQuery("#post-query-submit").click(function(){
    //alert(jQuery("#hiddenuser").val());
    if(jQuery("#hiddenuser").val() == "-1"){
      <?php //if($_REQUEST['EVT_wp_user'] != "-1"){ ?>
        //jQuery( "#EVT_wp_user" ).attr("name","EVT_wp_user");
      <?php //}else{?>
        jQuery( "#EVT_wp_user" ).attr("name","EVT_wp_user1");
      <?php// }?>
    }else{
      jQuery( "#EVT_wp_user" ).attr("name","EVT_wp_user");
    }
  });
   //
});
</script>
   <?php }}
 }

function content( $limit = 50 ) {
    global $post;

    if( has_excerpt() ){
        $content = the_excerpt();
    } else {
      $content = explode( ' ', get_the_content(), $limit );
      if ( count($content) >= $limit ) {
        array_pop( $content );
        $content = implode( " ", $content );
        $content = wp_strip_all_tags( $content, true );
        $content = $content . '...';
      } else {
        $content = implode( " ", $content );
      }

      $content = preg_replace( '/\[.+\]/','', $content );
      $content = apply_filters( 'the_content', $content );
      $content = str_replace( ']]>', ']]&gt;', $content );
    }

    return $content;
}