Free shipping on one category and one zone only

[Ajeh]

If you create a Zone Definition for who *IS* allowed to have Free Shipping for Products marked as Always Free Shipping, and add that Zone to the FREE SHIPPING! freeshipper shipping module ...

you can add the following code customizations in RED:
/includes/classes/shipping.php

  function calculate_boxes_weight_and_tare() {
    global $total_weight, $shipping_weight, $shipping_quoted, $shipping_num_boxes;

// bof: allow 1 zone only for Always Free Shipping
// Always Free Shipping added back except for anyone in MODULE_SHIPPING_FREESHIPPER_ZONE
    global $db, $order, $cart;
        $valid_zone_id = MODULE_SHIPPING_FREESHIPPER_ZONE;
        $check_flag = false;
        $check = $db->Execute("select zone_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . $valid_zone_id . "' and zone_country_id = '" . $order->delivery['country']['id'] . "' order by zone_id");
        while (!$check->EOF) {
          if ($check->fields['zone_id'] < 1) {
            $check_flag = true;
            break;
          } elseif ($check->fields['zone_id'] == $order->delivery['zone_id']) {
            $check_flag = true;
            break;
          }
          $check->MoveNext();
        }

        if ($check_flag == false) {
          $total_weight += $_SESSION['cart']->free_shipping_weight;
        }
// Always Free Shipping added back except for anyone in MODULE_SHIPPING_FREESHIPPER_ZONE
// eof: allow 1 zone only for Always Free Shipping

    $this->abort_legacy_calculations = FALSE;
    $this->notify('NOTIFY_SHIPPING_MODULE_PRE_CALCULATE_BOXES_AND_TARE');

/includes/modules/shipping/table.php

// bof: allow 1 zone only for Always Free Shipping
//      if (zen_get_shipping_enabled($this->code)) {
      $this->enabled = ((MODULE_SHIPPING_TABLE_STATUS == 'True') ? true : false);
//    }
// eof: allow 1 zone only for Always Free Shipping

    if ($this->enabled) {
      // check MODULE_SHIPPING_TABLE_HANDLING_METHOD is in
      $check_query = $db->Execute("select configuration_value from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_SHIPPING_TABLE_HANDLING_METHOD'");
      if ($check_query->EOF) {
        $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('Handling Per Order or Per Box', 'MODULE_SHIPPING_TABLE_HANDLING_METHOD', 'Order', 'Do you want to charge Handling Fee Per Order or Per Box?', '6', '0', 'zen_cfg_select_option(array(\'Order\', \'Box\'), ', now())");
      }
    }

// bof: allow 1 zone only for Always Free Shipping
// Always Free Shipping added back except for anyone in MODULE_SHIPPING_FREESHIPPER_ZONE
if (!IS_ADMIN_FLAG) {
    global $order, $db;
//echo 'I see quantity: ' . ($_SESSION['cart']->in_cart_check('product_is_always_free_shipping', 1)) . '<br>';

        $valid_zone_id = MODULE_SHIPPING_FREESHIPPER_ZONE;
        $check_flag = false;
        $check = $db->Execute("select zone_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . $valid_zone_id . "' and zone_country_id = '" . $order->delivery['country']['id'] . "' order by zone_id");
        while (!$check->EOF) {
          if ($check->fields['zone_id'] < 1) {
            $check_flag = true;
            break;
          } elseif ($check->fields['zone_id'] == $order->delivery['zone_id']) {
            $check_flag = true;
            break;
          }
          $check->MoveNext();
        }

        if ($check_flag == true) {
          if ($_SESSION['cart']->count_contents() == $_SESSION['cart']->in_cart_check('product_is_always_free_shipping', 1)) {
            $this->enabled = false;
          } else {
            $this->enabled = true;
          }
        } else {
          $this->enabled = true;
        }
      }
// bof: allow 1 zone only for Always Free Shipping

    if ( ($this->enabled == true) && ((int)MODULE_SHIPPING_TABLE_ZONE > 0) ) {

/includes/modules/shipping/zones.php

      // disable only when entire cart is free shipping
// bof: allow 1 zone only for Always Free Shipping
//      if (zen_get_shipping_enabled($this->code)) {
        $this->enabled = ((MODULE_SHIPPING_ZONES_STATUS == 'True') ? true : false);
//      }
// eof: allow 1 zone only for Always Free Shipping

      // CUSTOMIZE THIS SETTING FOR THE NUMBER OF ZONES NEEDED
      $this->num_zones = 3;

// bof: allow 1 zone only for Always Free Shipping
// Always Free Shipping added back except for anyone in MODULE_SHIPPING_FREESHIPPER_ZONE
if (!IS_ADMIN_FLAG) {
    global $order, $db;
//echo 'I see quantity: ' . ($_SESSION['cart']->in_cart_check('product_is_always_free_shipping', 1)) . '<br>';

        $valid_zone_id = MODULE_SHIPPING_FREESHIPPER_ZONE;
        $check_flag = false;
        $check = $db->Execute("select zone_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . $valid_zone_id . "' and zone_country_id = '" . $order->delivery['country']['id'] . "' order by zone_id");
        while (!$check->EOF) {
          if ($check->fields['zone_id'] < 1) {
            $check_flag = true;
            break;
          } elseif ($check->fields['zone_id'] == $order->delivery['zone_id']) {
            $check_flag = true;
            break;
          }
          $check->MoveNext();
        }

        if ($check_flag == true) {
          if ($_SESSION['cart']->count_contents() == $_SESSION['cart']->in_cart_check('product_is_always_free_shipping', 1)) {
            $this->enabled = false;
          } else {
            $this->enabled = true;
          }
        } else {
          $this->enabled = true;
        }
      }
// bof: allow 1 zone only for Always Free Shipping

      if (IS_ADMIN_FLAG === true) {
      // build in admin only additional zones if missing in the configuration table due to customization of default $this->num_zones = 3

[pietpetoors]

Thanx a million.
I will add it now and will let you know

[pietpetoors]

WOW, Thanks, it is working.
Will do some more tests now to make sure it is working with all the products.

[Ajeh]

You are most welcome ... thanks for the update that this is working for you ...

Remember the Zen Cart Team when you are rich and famous!

[pietpetoors]

Ajeh, I have one more question. I use the zone module for my International courier.
If I want to add international airmail on the same basis but different rates, can I just copy and clone the zone module and create a zoneairmail module?

If I can, will the new zoneairmail module be influenced by the free shipping products like the other modules which we have just modified?

[Ajeh]

You should be able to clone it and use the same type of modifications ... just be careful when cloning to make all changes so that they are case sensitive ...

[pietpetoors]

Remember the Zen Cart Team when you are rich and famous!

I will

[Ajeh]

You might peek in the Plugins ... I have not looked at this in a long time, but I made a couple clones of Zone Rate zones:
http://www.zen-cart.com/downloads.php?do=file&id=977

[Ajeh]

I made some minor code changes on my post that may or may not be needed for issues with REMOVE/INSTALL in the Admin ...

If you run into an issue, see if the changes help ...