检查用户是否以JQuery等级登录并警告您是否必须登录

Question

Check if the user is logged in or not, If the user is logged in alert with thanks for rating, and if not alert with please log in to rate

<script>
$(document).ready(function () {
   $("#demo2 .stars").click(function ()  {

        $.post( "rate.php",{rate:$(this).val(), vid_id : 
       $vid_result['vid_id']}, function(d) {
        console.log(d);
        //JSON.parse(d);

         if(d.status && d.trim(status) == 'active'){

          alert('Thanks For Rating');

          }
          else if(d.status && d.trim(status) == 'inactive'){

          alert('You have to be logged in to rate'); 

         }

        },"json");
      });
    });
 </script>

This query uses this php bellow in order to alert the user that he/she has successfully rated. I have managed to insert rating only if the user is logged in with PHP and not insert rating if he/she is not logged in. However how can i fix the JQuery to alert the user with the appropriate message based on if the user is logged in or not?

 // this page is rate.php

 <?php

  include 'core/init.php'; 

 if (isset($_POST['rate']) && !empty($_POST['rate'])) {
  if(isset($session_user_id)){
  $rate = sanitize($_POST['rate']);
   $vidid = sanitize($_POST['vid_id']);
 // check if user has already rated
   $sql = "SELECT `id` FROM `rating` WHERE `rater_id`='" . 
  $session_user_id."' AND  `video_id` = '".$vidid."'";
  $result = $conn->query($sql);
  $row = $result->fetch_assoc();
  if ($result->num_rows > 0) {

     $sql = "UPDATE rating SET `rate` = '$rate' WHERE `rater_id`='" . $session_user_id . "' AND `video_id` = '".$vidid."'";
      if (mysqli_query($conn, $sql)) {        }
    echo $row['id'];
} else {

    $sql = "INSERT INTO `rating` (`video_id`, `rater_id`, `rate`) VALUES ('$vidid' ,'$session_user_id', '$rate')";
    if (mysqli_query($conn, $sql)) {
     //success
    json_encode(array('status'=>'active'));
    }else
    echo "fail";
}
}else{
     //not logged in
     json_encode(array('status'=>'inactive'));
  }
  }

?>

Answer 1

rate.php:

echo the json encoded array at both places

echo json_encode(array('status'=>'active'));

in jquery post: remove d.trim(status) instead do

d.status && d.status == 'active'