Question

I am making a CRUD application in jquery and i have this problem in my application.To edit a record i am getting the id of the record successfully.

<a href="#" id="<?php echo $msg_id; ?>"  class="update_btn">Edit</a>

I want to retrieve the id and that works.

$('.update_btn').live("click",function() 
{
var ID = $(this).attr("id");
var dataString = 'msg_id='+ ID;
//alert(dataString);

$.ajax({
type: "POST",
 url: "get-data.php",
 dataType: 'json',
 cache: false,
 success: function(data){
 //getData()
 }
});
return false;
});

However,how can i use the retrieved id to

//get-data.php
include('db.php');
if($_POST['msg_id'])
{
$id=$_POST['msg_id'];
$id = mysql_escape_String($id);
$sql_in= mysql_query("SELECT msg FROM messages where msg_id='$id'");
$r=mysql_fetch_array($sql_in);
$msg=$r['msg'];
echo json_encode($msg);
}

return the data from the select query.Is this possible?.

Answer 1

You need to use data option in your ajax request to send your id first:

$.ajax({
   type: "POST",
   url: "get-data.php",
   dataType: 'json',
   data: dataString , // <--------- added this line
   cache: false,
   success: function(data){
     //getData()
 }
});

Now you will be able to get it in PHP with what you are doing eg $_POST['msg_id']