Separate shipping for states/provinces

Yes! Finally I figured it out. There’s indeed a close curly bracket in a function of sync_states that has not been deleted. However, I still have a problem mantish. Upon entering the number of groups of states, nothing appears on the fields. By the way, I’ve added a PH.php in the /i18n/states folder in woocommerce as I noticed that there is no available for my country(Philippines). I just copied one the files there and renamed accordingly. Hope this helps. Hope to hear from you again soon. Thank you so much.

florbv, you can put your code in github.
By the way, adding the states (or any othe customization) inside the plugin folder is not recommended, as it may get lost whan you upgrade the plugin.
You can add the states in your theme functions.php like this:

add_filter( 'woocommerce_states', 'custom_woocommerce_states' );
function custom_woocommerce_states( $states )
{
	$states['PH'] = array(
		'XXX' => 'Xxxxx',
		...
	);
	return $states;
}

Thanks mantish! I’ve tried copying your codes and they worked! Great! Just have some more followup questions though. I have a theme child. where do I put those customizations so as not to be overwritten during upgrade. I’ve tried creating a functions.php file in my theme child directory and copied the code above but it just gave me an error. So I tried copying the whole functions.php from my parent theme to my child theme, added the coded above, and deleted the original functions.php in my parent theme directory and it worked. Did I do it right?

Re shipping-awd.php file, I’ve tried creating a directory in my child theme and it looks like this: /twentyeleven_child/awd-weightcountry-shipping and tried to place your shipping-awd.php file there but it didn’t work. The entire AWD Weight/State shipping option disappeared in the Shipping tab of WooCommerce settings so what I did was just put it in the plugin’s original location folder(plugins/awd-weightcountry-shipping) and it worked. What should I suppose to do to protect it from future upgrades?

Thank you so much for being kind. Really appreciate it. Am just a newbie in this field.:)

Hello mantish! Glad I did it! Last question solved already. All I wanna know right now is how to keep safe these customized files from future updates/upgrades. Thank you so much!

Thanks mantish. will refer to wordpress documentation then. Are there options on setting plugin updates not to update automatically?

I can’t input state names. How did you do it?

I made some changes to the plugin and mantish code for spanish users. Now we can use a different shipping rate for Ceuta and Melilla, Baleares, Canarias and the rest of Spain, Portugal and Andorra.

Now you can select state and/or country, and use more than one state or country at same time in the shipping rates (comma separated).

Here you have the full new code. Please, enjoy it:

<?php
/**
 * Plugin Name: AWD Weight/State/Country Shipping
 * Plugin URI: http://www.andyswebdesign.ie/blog/free-woocommerce-weight-and-country-based-shipping-extension-plugin/
 * Description: Weight and State/Country based shipping method for Woocommerce.
 * Version: 1.0.1
 * Author: Andy_P (modified by Mantish to make it state based) Art Project Group final version
/*  Copyright 2012  andyswebdesign.ie

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License, version 2, as
    published by the Free Software Foundation.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

add_action('plugins_loaded', 'init_awd_shipping', 0);

function init_awd_shipping() {

    if ( ! class_exists( 'WC_Shipping_Method' ) ) return;

    class awd_Shipping extends WC_Shipping_Method {

        function __construct() {

            $this->id                       = 'awd_shipping';
            $this->method_title             = __( 'AWD Weight/State', 'woocommerce' );

            $this->admin_page_heading       = __( 'Weight based shipping', 'woocommerce' );
            $this->admin_page_description   = __( 'Define shipping by weight and state', 'woocommerce' );

            add_action( 'woocommerce_update_options_shipping_' . $this->id, array( &$this, 'sync_countries' ) );
            add_action( 'woocommerce_update_options_shipping_' . $this->id, array( &$this, 'process_admin_options' ) );

            $this->init();
            $this->display_state_groups();
	        $this->display_country_groups();
        }

        /**
         * init function
         */
        function init() {

            $this->init_form_fields();
            $this->init_settings();

            $this->enabled                  = $this->settings['enabled'];
            $this->title                    = $this->settings['title'];
            $this->state_group_no           = $this->settings['state_group_no'];
            $this->country_group_no   		= $this->settings['country_group_no'];
            $this->sync_countries 			= $this->settings['sync_countries'];
            $this->availability             = 'specific';
            $this->states                   = $this->settings['states'];
			$this->countries 	  			= $this->settings['countries'];
            $this->type                     = 'order';
            $this->tax_status               = $this->settings['tax_status'];
            $this->fee                      = $this->settings['fee'];
            $this->options                  = isset( $this->settings['options'] ) ? $this->settings['options'] : '';
            $this->options                  = (array) explode( "\n", $this->options );
        }

        function init_form_fields() {

            global $woocommerce;

            $this->form_fields = array(
                'enabled' => array(
                    'title'                 => __( 'Enable/Disable', 'woocommerce' ),
                    'type'                  => 'checkbox',
                    'label'                 => __( 'Enable this shipping method', 'woocommerce' ),
                    'default'               => 'no',
                    ),
                'title' => array(
                    'title'                 => __( 'Method Title', 'woocommerce' ),
                    'type'                  => 'text',
                    'description'   		=> __( 'This controls the title which the user sees during checkout.', 'woocommerce' ),
                    'default'               => __( 'Weight Based Shipping', 'woocommerce' ),
                    ),

                'tax_status' => array(
                 'title'                	=> __( 'Tax Status', 'woocommerce' ),
                 'type'                     => 'select',
                 'description' 				=> '',
                 'default'              	=> 'taxable',
                 'options'             		=> array(
                    'taxable'       		=> __( 'Taxable', 'woocommerce' ),
                    'none'          		=> __( 'None', 'woocommerce' ),
                    ),
                 ),
                'fee' => array(
                    'title'                 => __( 'Handling Fee', 'woocommerce' ),
                    'type'                  => 'text',
                    'description'   		=> __( 'Fee excluding tax. Enter an amount, e.g. 2.50. Leave blank to disable.', 'woocommerce' ),
                    'default'               => '',
                    ),
                'options' => array(
                    'title'                 => __( 'Shipping Rates', 'woocommerce' ),
                    'type'                  => 'textarea',
                    'description'   		=> __( 'Set your weight based rates for state groups (one per line). Example: <code>Max weight|Cost|state/country group number separated by comma</code>. Example: <code>100|6.95|S1,C3</code>.', 'woocommerce' ),
                    'default'               => '',
                    ),
                'state_group_no' => array(
                    'title'                 => __( 'Number of state groups', 'woocommerce' ),
                    'type'                  => 'text',
                    'description'  			=> __( 'Number of groups of states sharing delivery rates (hit "Save changes" button after you have changed this setting).' ),
                    'default'               => '3',
                    ),
                'country_group_no' => array(
                    'title'                 => __( 'Number of country groups', 'woocommerce' ),
                    'type'                 	=> 'text',
                    'description'			=> __( 'Number of groups of countries sharing delivery rates (hit "Save changes" button after you have changed this setting).' ),
                    'default' 				=> '3',
                    ),
                'sync_countries' => array(
                    'title'                 => __( 'Add countries to allowed', 'woocommerce' ),
                    'type'                 	=> 'checkbox',
                    'label' 				=> __( 'Countries added to country groups will be automatically added to Allowed Countries
												in <a href="/wp-admin/admin.php?page=woocommerce_settings&tab=general">General settings tab.</a>
												This makes sure countries defined in country groups are visible on checkout.
												Deleting country from country group will not delete country from Allowed Countries.', 'woocommerce' ),
                    'default' 				=> 'no',
                    ),
                );
        }

        /*
        * Displays state group selects in shipping method's options
        */
        function display_state_groups() {

            global $woocommerce;
        //   echo prp($this->settings['countries1']);
            $number = $this->state_group_no;

            $base_country = $woocommerce->countries->get_base_country();

            for($counter = 1; $number >= $counter; $counter++) {

                $this->form_fields['S'.$counter] =  array(
                    'title'     => sprintf(__( 'State Group %s', 'woocommerce' ), $counter),
                    'type'      => 'multiselect',
                    'class'     => 'chosen_select',
                    'css'       => 'width: 450px;',
                    'default'   => '',
                    'options'   => $woocommerce->countries->get_states( $base_country )
                    );
            }
        }

        /*
	    * Displays country group selects in shipping method's options
	    */
    	function display_country_groups() {

	        global $woocommerce;
   		//   echo prp($this->settings['countries1']);
	        $number = $this->country_group_no;

			for($counter = 1; $number >= $counter; $counter++) {

    	        $this->form_fields['C'.$counter] =  array(
        	            'title'     => sprintf(__( 'Country Group %s', 'woocommerce' ), $counter),
	                    'type'      => 'multiselect',
	                    'class'     => 'chosen_select',
    	                'css'       => 'width: 450px;',
	                    'default'   => '',
	                    'options'   => $woocommerce->countries->countries
	            );
	        }
	    }

        /*
        * This method is called when shipping is calculated (or re-calculated)
        */
        function calculate_shipping($package = array()) {

            global $woocommerce;

			$group = $this->get_group($package);
			$rates = $this->get_rates_by_group($group);
			if ($group[0] == 'S') $destination = $package['destination']['state'];
			else $destination = $package['destination']['country'];

            $weight = $woocommerce->cart->cart_contents_weight;
            $final_rate = $this->pick_smallest_rate($rates, $weight);

            if ($final_rate === false) return false;

            $taxable = ($this->tax_status == 'taxable') ? true : false;

            if ($this->fee > 0 && $destination) $final_rate = $final_rate + $this->fee;

            $rate = array(
                'id'        => $this->id,
                'label'     => $this->title,
                'cost'      => $final_rate,
                'taxes'     => '',
                'calc_tax'  => 'per_order'
                );

            $this->add_rate( $rate );
        }

        /*
        * Retrieves the number of state/country group for state selected by user on checkout
        */
        function get_group($package = array()) {

            $counter = 1;

            while(is_array($this->settings['S'.$counter])) {
                if (in_array($package['destination']['state'], $this->settings['S'.$counter])) $group = 'S'.$counter;

                $counter++;
            }

            if (isset($group)) return $group;

            $counter = 1;

            while(is_array($this->settings['C'.$counter])) {
                if (in_array($package['destination']['country'], $this->settings['C'.$counter])) $group = 'C'.$counter;

                $counter++;
            }

            return $group;
        }

    	/*
	    * Retrieves all rates available for selected group
	    */
        function get_rates_by_group($group = null) {

            $rates = array();
            if ( sizeof( $this->options ) > 0) foreach ( $this->options as $option => $value ) {

                $rate = preg_split( '~\s*\|\s*~', trim( $value ) );

                if ( sizeof( $rate ) !== 3 )  {
                    continue;
                } else {
                    $rates[] = $rate;
                }
            }

            foreach($rates as $key) {
				$groups = explode(",", $key[2]);
				foreach($groups as $group_key)
				{
	                if ($group_key == $group) {
    	                $group_rate[] = $key;
        	        }
				}
            }
            return $group_rate;
        }

        /*
        * Picks the right rate from available rates based on cart weight
        */
        function pick_smallest_rate($rates,$weight) {

            if ($weight == 0) return 0; // no shipping for cart without weight

            if (sizeof($rates) > 0) foreach ($rates as $key => $value) {

                if ($weight <= $value[0]) {
                    $postage[] = $value[1];
                }
                $postage_all_rates[] = $value[1];
            }

            if (sizeof($postage) > 0) {
                return min($postage);
            } else {
                if (sizeof($postage_all_rates) > 0) return max($postage_all_rates);
            }
            return false;
        }

        function etz($etz) {

            if(empty($etz) || !is_numeric($etz)) {
                return 0.00;
            }
        }

	    /*
	    * Uptades Allowed Countries with countries added to country groups
	    */
	    function sync_countries() {

	        if ($this->settings['sync_countries'] == 'yes') {
	            $countries = $this->get_cg_countries();
	            update_option('woocommerce_specific_allowed_countries', $countries);
	        }
	    }

	    /*
	     * Retrieves countries from country groups and merges them with Allowed Countries array
	     */
    	function get_cg_countries() {    

            $counter = 1;
            $countries = array();

            while(is_array($this->settings['countries'.$counter])) {
                $countries = array_merge($countries, $this->settings['countries'.$counter]);

            	$counter++;
            }

            $allowed_countries = get_option( 'woocommerce_specific_allowed_countries' );

            if (is_array($allowed_countries)) $countries = array_merge($countries, $allowed_countries);
            $countries = array_unique($countries);
        	return $countries;
    	}

        public function admin_options() {

            ?>
            <h3><?php _e('Weight and State based shipping', 'woocommerce'); ?></h3>
            <p><?php _e('Lets you calculate shipping based on State and weight of the cart. Lets you set unlimited weight bands on per state basis and group states
            that share same delivery cost/bands. For help and how to use go <a href="http://www.andyswebdesign.ie/blog/free-woocommerce-weight-and-country-based-shipping-extension-plugin/" target="_blank">here</a>', 'woocommerce'); ?></p>
            <table class="form-table">
               <?php
                    // Generate the HTML For the settings form.
               $this->generate_settings_html();
               ?>
            </table><!--/.form-table-->
            <?php
        }

    } // end awd_Shipping
}

/**
 * Add shipping method to WooCommerce
 **/
function add_awd_shipping( $methods ) {
    $methods[] = 'awd_shipping'; return $methods;
}

add_filter( 'woocommerce_shipping_methods', 'add_awd_shipping' );

?>

I’m awaiting approval from WordPress for publishing a new plugin called WooCommerce – APG Weight and Postcode/State/Country Shipping with that code and more options, like groups by postalcode, different taxes for groups and unlimited shipping companies. Fully translate in english and spanish. And totally FREE.

Please wait until WordPress approve it. You can get more information on http://www.artprojectgroup.es/plugins-para-wordpress/woocommerce-apg-weight-and-postcodestatecountry-shipping.

In this weekend I’ll publish a tutorial, in spanish only, to know how to use it.

I hope you enjoy it.