Passing Session variables to javascript

Question

In an ExpressionEngine template, I'm setting a PHP session variable in a javascript file like this: (Yes, EE will parse the PHP and add plug the values to the javascript)

<?php session_start(); ?>  
function check_someone_else_result(data) {
  waiting_list_flag = false;
   <?php $_SESSION['waiting_list_flag'] = false;  ?>
  if(data.CanBuy=='YES'){
    show_for_someone_else();
  } else {
    waiting_list_flag = true;
   <?php $_SESSION['waiting_list_flag'] = true;  ?>
    $('#sm_content .oblcontent').html($('#waiting_list').html());
    $('#sm_content a.closebtn').click(function(){location.reload(true);});
    $('#sm_content a.yeswaitbtn').click(function(){show_for_someone_else();});
  } // if(data.CanBuy=='YES')
} // function check_someone_else_result

Now, in the show_for_someone_else() function, I'm redirecting to another page that loads another javascript file and I'm trying to set a javascript variable to the same value that I set the session variable to above.

<?php session_start(); ?>
   var CART_URL          = '{site_url}store/checkout/cart/';
   $(document).ready(function(){
     // attach the validationEngine to the form
     $("#voucher_form").validationEngine('attach', {
                      scroll: false
     }); // $("#voucher_form").validationEngine

     // handles the NExt button click
     $('#checkout-step-billing a').click(function(){
      $('#checkout-step-billing .voucher_form').submit();
     }); // $('#checkout-step-billing a').click

     // handles keypresses in all the fields in the form to submit the 
     // form when the press enter
     $("#checkout-step-billing .voucher_form input").keypress(function (e) {
      if ((e.which && e.which == 13) || (e.keyCode && e.keyCode == 13)) {
        $('#checkout-step-billing .voucher_form').submit();
        return false;
      } else {
        return true;
      }
     }); // $("#checkout-step-billing .voucher_form input").keypress

     // set the wait_list_flag from the session variable
     var wait_list_flag = <?php $_SESSION['waiting_list_flag']; ?>   
   }); // $(document).ready

But I am not getting anything at all.

How do I need to do this?

score 1 · Accepted Answer · answered Sep 09 '11 at 14:48

1

 var wait_list_flag = <?php $_SESSION['waiting_list_flag']; ?>

should be

 var wait_list_flag = <?php echo $_SESSION['waiting_list_flag']; ?>;
                            ^^^^                                   ^

Without the echo, the PHP block doesn't output anything, so nothing gets inserted into the Javascript block. You're also missing the trailing semicolon in the javascript, which may also cause a fatal parse error.

answered Sep 09 '11 at 14:48

Marc B

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Doggone it, I don't know how I missed that. – MB34 Sep 09 '11 at 15:03

score 0 · Answer 2 · answered Sep 09 '11 at 14:48

0

To set the value, you will need to echo / print the $_SESSION['waiting_list_flag']; in the second snippet.

Keep in mind, in the first snippet, PHP will be run first (it's not run with the JavaScript), so the session var will always be true. (Unless that is what you meant wrt EE)

answered Sep 09 '11 at 14:48

Jonnix

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Actually, the first snippet sets the session var to the value required, then when the second snippet runs, the value will be there. It will not always be true. – MB34 Sep 12 '11 at 13:29

Passing Session variables to javascript

2 Answers2

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