在我们网站开发过程中常常会遇到各种运费的问题，怎样快速添加一个简单的运费规则呢，下面是快速建立运费规则的一些步骤。
模板文件路径:
app
- code
- local
- Tang
- MyCarrier
- Model
- Carrier.php
- etc
- config.xml
- system.xml
- etc
- modules
- Tang.xml
Carrier.php文件中的内容：
<?php
class Tang_MyCarrier_Model_Carrier
extends Mage_Shipping_Model_Carrier_Abstract
implements Mage_Shipping_Model_Carrier_Interface
{
protected $_code = 'tang_mycarrier';
public function collectRates(Mage_Shipping_Model_Rate_Request $request)
{
$rate = Mage::getModel('shipping/rate_result_method');
/* @var $rate Mage_Shipping_Model_Rate_Result_Method */
$rate->setCarrier($this->_code);
/**
* getConfigData(config_key) returns the configuration value for the
* carriers/[carrier_code]/[config_key]
*/
$rate->setCarrierTitle($this->getConfigData('title'));
$rate->setMethod('tang_mycarrier');
$rate->setMethodTitle('tang_mycarrier');
$rate->setPrice(58.00);
$rate->setCost(0);
return $rate;
}
public function getAllowedMethods()
{
return array('tang_mycarrier' => $this->getConfigData('name'));
}
}
etc.xml文件：
<?xml version="1.0" encoding="UTF-8"?>
<config>
<modules>
<Tang_MyCarrier>
<module>0.0.1</module>
</Tang_MyCarrier>
</modules>
<global>
<models>
<tang_mycarrier>
<class>tang_MyCarrier_Model</class>
</tang_mycarrier>
</models>
</global>
<!-- Default configuration -->
<default>
<carriers>
<tang_mycarrier>
<active>1</active>
<!--
This configuration should not be made visible
to the administrator, because it specifies
the model to be used for this carrier.
-->
<model>tang_mycarrier/carrier</model>
<!--
The title as referenced in the carrier class
-->
<title>Smashing Magazine Carrier</title>
<!--
The sort order specifies the position that
this carrier appears relative to the other
carriers available in checkout.
-->
<sort_order>10</sort_order>
<!--
Out of the box, Magento offers shipping
carriers the ability to restrict themselves
to specific countries. For this configuration
option, 0 means allow all countries available,
and 1 means allow all countries specified
in the country list that we will add later
in system.xml
-->
<sallowspecific>0</sallowspecific>
</tang_mycarrier>
</carriers>
</default>
</config>
system.xml文件：
<?xml version="1.0" encoding="UTF-8"?>
<config>
<sections>
<carriers translate="label" module="shipping">
<groups>
<tang_mycarrier translate="label">
<label>国际物流</label>
<frontend_type>text</frontend_type>
<sort_order>2</sort_order>
<show_in_default>1</show_in_default>
<show_in_website>1</show_in_website>
<show_in_store>1</show_in_store>
<fields>
<!--
The following fields are available
to modify in the admin panel.
The values are saved in the
database.
This shipping carrier abstract checks
this value to determine whether
the carrier should be shown.
-->
<active translate="label">
<label>Enabled</label>
<frontend_type>select</frontend_type>
<source_model>adminhtml/system_config_source_yesno</source_model>
<sort_order>1</sort_order>
<show_in_default>1</show_in_default>
<show_in_website>1</show_in_website>
<show_in_store>0</show_in_store>
</active>
<!--
This value can be used to specify a
custom title for our method.
-->
<title translate="label">
<label>Title</label>
<frontend_type>text</frontend_type>
<sort_order>2</sort_order>
<show_in_default>1</show_in_default>
<show_in_website>1</show_in_website>
<show_in_store>1</show_in_store>
</title>
<!--
The sort order is used in Magento
to determine what order the carrier
will appear in relative to the
other carriers available.
-->
<sort_order translate="label">
<label>Sort Order</label>
<frontend_type>text</frontend_type>
<sort_order>100</sort_order>
<show_in_default>1</show_in_default>
<show_in_website>1</show_in_website>
<show_in_store>0</show_in_store>
</sort_order>
<!--
This value is used to specify whether
the carrier is available only for
specific countries or all countries
available in the current Magento
installation.
-->
<sallowspecific translate="label">
<label>Ship to Applicable Countries</label>
<frontend_type>select</frontend_type>
<sort_order>90</sort_order>
<frontend_class>shipping-applicable-country</frontend_class>
<source_model>adminhtml/system_config_source_shipping_allspecificcountries</source_model>
<show_in_default>1</show_in_default>
<show_in_website>1</show_in_website>
<show_in_store>0</show_in_store>
</sallowspecific>
<!--
If 'specific countries' is chosen
in the previous option, then this field
allows the administrator to specify
which specific countries this carrier
should be available for.
-->
<specificcountry translate="label">
<label>Ship to Specific Countries</label>
<frontend_type>multiselect</frontend_type>
<sort_order>91</sort_order>
<source_model>adminhtml/system_config_source_country</source_model>
<show_in_default>1</show_in_default>
<show_in_website>1</show_in_website>
<show_in_store>0</show_in_store>
<can_be_empty>1</can_be_empty>
</specificcountry>
</fields>
</tang_mycarrier>
</groups>
</carriers>
</sections>
</config>
Tang_MyCarrier.xml文件
<?xml version="1.0"?>
<config>
<modules>
<Tang_MyCarrier>
<active>true</active>
<codePool>local</codePool>
<depends>
<Mage_Shipping />
</depends>
</Tang_MyCarrier>
</modules>
</config>
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