Question

I am using jQuery Validate Plugin found from below URL

http://bassistance.de/jquery-plugins/jquery-plugin-validation/

I just wanted to make a validation rule to check if the record exists in database or not. I also made ajax script like blow & added it using $.validator.addMethod but it is not working. can someone please suggest how to do this ?

$.validator.addMethod("check_exists", function(value) {
$.ajax({
    type: "POST",
    url: "xyz.com/check_exists.php",
    data: $( "#frmEdit" ).serialize(),
        success: function(result){
                if(result=="exists")
                   return false;
                else
                   return true;
        },
});
}, 'This record is already exists');

Answer 1

Validation plugin has a built in remote option you provide a url to and the request will be made to server from within plugin. For what you are doing there is no need to creat a whole new method

http://docs.jquery.com/Plugins/Validation/Methods/remote#options