Free Shipping Coupon Codes with Multiple Shipping Rules

I have successfully implemented a coupon code form on the cart page that compares the entered code with the database. I have created a simple discount rule in the cart for a family discount which works fine. My dilemma now is that I would like to have a code in the database for free shipping. I have 4 separate flat rate shipping rules so when the cart subtotal is above a certain number the shipping rate changes. My thought was that I could create a discount rule for free shipping by having the session variable conditions met and have the discount be equal to the shipping amount variable.

Here is my code:

//eCart Rule
function WAEC_iembroider_FreeShipping()  {
  $totalDiscount = 0;
  if (true && ((sizeof($this->Items) > 0) && (isset($_SESSION['CouponCode'])) && ((isset($_SESSION['CouponCode'])?$_SESSION['CouponCode']:"") == "freeship523"))) {
    $totalDiscount += $totalShipping;//Result
  }
  return WA_eCart_FormatNumber($totalDiscount, $this->ForceDecimalsC, $this->DecimalPlacesC);
}
//eCart Rule

This rule works properly when I have a flat rate discount or a percentage discount from the database, but I am unable to get the $totalShipping to work as the discount. Because there are multiple shipping rules I need the discount amount to change depending on the cart subtotal that is why I tried the $totalShipping.

Any thoughts would be appreciated. I know I could have four separate discount rules for free shipping, but that seems inefficient.

in the eCart shipping rule, use a flat rate calculation and enter the following for the flat rate:
$this->GetShipping();

Do you mean enter it in the ecart discount rule? If so I tried that, but the order summary disappears.

can you send a copy of your cart object page

Here is the file.

the issue is that the shipping rules are all using the taxable total, and this is causing an endless loop to occur.

Set the shipping rules to use the cart subtotal instead of the taxable total

Thank you that worked. Do you have any tricks on being able to enter and use two coupon codes with the same cart? Let's say they know the free shipping code and a family discount code. Right now these overwrite each other when entered. Do we need to change the session variable.

yes, you would need to set it up to use 2 separate session variables. you would also need a seperate discount for each session.

I tried to set up to session variables with this code:

<?php
if (!session_id()) session_start();
if((((isset($_POST["coupon"]))?$_POST["coupon"]:"") != ""))     {
  $_SESSION["CouponCode"] = "".((isset($_POST["coupon"]))?$_POST["coupon"]:"")  ."";
  $_SESSION["CouponCode2"] = "".((isset($_POST["coupon"]))?$_POST["coupon"]:"")  ."";
}
?>
<?php
if (!session_id()) session_start();
if(!($totalRows_coupon == 0))     {
  $_SESSION["CouponAmount"] = "".$row_coupon['Amount']  ."";
  $_SESSION["CouponAmount2"] = "".$row_coupon['Amount']  ."";
}
?>

The discount rules are as follows:

//eCart Rule
function WAEC_iembroider_FamilyDiscount()  {
  $totalDiscount = 0;
  if (true && ((sizeof($this->Items) > 0) && (isset($_SESSION['CouponCode'])) && ((isset($_SESSION['CouponCode'])?$_SESSION['CouponCode']:"") != "freeship523") && (isset($_SESSION['CouponAmount'])))) {
    $totalDiscount += ($this->TotalColumn("TotalPrice") * $_SESSION['CouponAmount']);//Result
  }
  return WA_eCart_FormatNumber($totalDiscount, $this->ForceDecimalsC, $this->DecimalPlacesC);
}
//eCart Rule
//eCart Rule
function WAEC_iembroider_FreeShipping()  {
  $totalDiscount = 0;
  if (true && ((sizeof($this->Items) > 0) && (isset($_SESSION['CouponCode2'])) && ((isset($_SESSION['CouponCode2'])?$_SESSION['CouponCode2']:"") == "freeship523") && (isset($_SESSION['CouponAmount2'])))) {
    $totalDiscount += $this->GetShipping();//Result
  }
  return WA_eCart_FormatNumber($totalDiscount, $this->ForceDecimalsC, $this->DecimalPlacesC);
}
//eCart Rule

The Family Discount is based on $_Session ['CouponCode'] and the Free Shipping Discount is based on $ Session ['CouponCode2'], but for some reason they still just overwrite each other in the cart. Any thoughts?

sounds to me like the updated coupon rules are not being properly updated to the server



Try deleting the cart file from the server, then re uploading it.

the rules look like they should work, I dont see how they could overwrite each other.