Get Shipping in CartRule.php with Cart::ONLY_SHIPPING

[cdthomas23]

I am trying to modify CartRule.php.  In order to get the amount I need, I really need to be able to get just the shipping amount.  So, I add the following line to just store it in a variable:

 

$cdtShip = $context->cart->getOrderTotal(true, Cart::ONLY_SHIPPING);

 

As soon as I do this, I get a blank page.

 

No problems at all if I do this, however:

 

$cdtShip = $context->cart->getOrderTotal(true, Cart::ONLY_PRODUCTS);

 

Any idea why the Cart::ONLY_SHIPPING is causing problems?

 

 

Thank you very much in advance.

 

[cdthomas23]

A little more info.  I figured out how to turn debug on and I get the following when making that call:

 

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 523800 bytes) in /home/XXX/shop/classes/Cart.php on line 1913

 

Why is this call doing that?

[vekia]

you see this message because you exceeded the memory limit on your hosting account.

try to increase it (or ask your hoster) and then try again,

will see what's going on then

[cdthomas23]

I can certainly ask, but 2 things.

 

1. Why is this call exceeding the memory?

2. Why doesn't ONLY_PRODUCTS have the same problem? 

[cdthomas23]

Also, it looks like 128M may be the max I can go with my hoster.

[cdthomas23]

I was able to increase to 256 MB and even 512 MB.  The problem still exists when trying to use the above line to get ONLY_SHIPPING.  Any other thoughts?

[NemoPS]

Try this:

In that method, do something like "if ONLY SHIPPING is requested"

 

die('here I am');

 

Try placing the die(); at the beginning, moving it down in the code when you see it works.

 

Of course, you might want to run a debug backtrace to be sure you are targeting the right method call from your cartrule call