Switch from one shipping module to another dependent on product variables

[litepockets]

Hello all...

I am trying to figure out if it is possible to use and show only FedEx by default, but if product weight <= 0, then use and show only table rates...?

The reason for this is that I have the weight for only about half of my products entered... So the FedEx module will only show the lowest rate (based on 0 lbs).

Thanks for your advice.

[Ajeh]

Shipping modules display based on the $this->enabled being true and do not display based on $this->enabled being false ...

You could test the weight of the cart for 0 weight and set the $this->enabled to false and that would "turn off" the FedEx shipping module when the weight is 0 ...

[litepockets]

Ajeh,

Thank you. Would this do the trick then?

function quote($method = '') {

    global $shipping_weight, $shipping_num_boxes, $cart, $order;

        // FedEx not available if weight is 0 or null
    if ($shipping_weight ==0 | $shipping_weight ==null) {
        $this->enabled = ((MODULE_SHIPPING_FEDEX_GROUND_STATUS == 'False');
        } else {
        $this->enabled = ((MODULE_SHIPPING_FEDEX_GROUND_STATUS == 'True');
    } 

[Ajeh]

NOTE: the OR connector is || vs the single | you have ...

You should just be able to use is the $shipping_weight == 0 ...

Be aware that if you have Tare Weight set that this would be added in, so in the Configuration ... Shipping/Packaging ... you would want those set to 0:0 ...

Also, check where you are testing this and setting: $this->enabled

If it is not tested in the code below what you are showing, you are not using the code in the right place ...

[litepockets]

Good call on the "|" OR mistake, must have just been excited :)

Well, the good news is it works... The bad news is it doesn't work perfectly :) It doesn't allow the customer to get a FedEx quote using the estimator, which is fabulous. However, on the checkout page where it breaksdown the charges, it still displays FedEx but says:

No Rates Returned, E523 : Invalid weight.

I would like nothing to display. Is there a better place I should do my check?

[Ajeh]

The better way to do this is at the start of the shipping module ... for example, USPS usps.php I would change this code:

    // disable only when entire cart is free shipping
    if (zen_get_shipping_enabled($this->code)) {
      $this->enabled = ((MODULE_SHIPPING_USPS_STATUS == 'True') ? true : false);
    }

to read:

    // disable only when entire cart is free shipping
    if (zen_get_shipping_enabled($this->code)) {
      $this->enabled = ((MODULE_SHIPPING_USPS_STATUS == 'True') ? true : false);
    }

    global $cart;
    if (IS_ADMIN_FLAG == false && $_SESSION['cart']->show_weight() == 0) {
      $this->enabled = false;
    }

This allows it to work in the Admin and the Catalog ...

Notice I am using the $_SESSION['cart']->show_weight() as the $shipping_weight is not available at this point ...

[litepockets]

That makes sense. I will give this a shot. Thank you!
Posted via Mobile Device

[litepockets]

Ajeh, another thing I appreciate is that you provide a "why" anytime you use code in a post. It helps all of us learn as opposed to just having the answer. Thanks again, your posts on every thread always seem to help me.
Posted via Mobile Device

[Ajeh]

You are most welcome ... glad to be able to help you out ...

[Craig MD]

Ajeh,
I have installed this mod but have been running into problems when people change items in their cart after going to checkout page 1. I want to have it set so that any package below .813 lbs will only offer the table rate that equates to USPS First class, all packages over that weight ship UPS. This works great as long as they don't edit items in their cart. If they start off with an order less than .813lbs and go to checkout page 1, and then go back and add enough product to go over the weight limit it gets messy. Returning to checkout page 1 only shows the UPS option, but its not selected. USPS is still selected though not displayed. It works inversely going from a heavier order to a lighter order as well. Some times I will see both shipping options. I have also noticed that sometimes when the address has changed both shipping options will pop up when only one should be displayed. In order to clear the unwanted shipping options, I sometimes have to empty the cart and then log out and log back in.

I put the code above into table.php, but wonder if it should be somewhere else?

I am running version 1.3.9e
Thanks
Craig