商城方式实现最优算法

如果商城中有好几个快递运送方式...

 

 

如何能实现最优算法呢 ？？先解释下所谓的最优算法...

1.只显示能配送到该地区的快递公司

2.在上面的基础上默认选中最便宜的快递公司

3.在前两条的基础上选中最快的快递公司

需求已经明确我们来看看magento中onepage中实现shipping method的地方,

一顿乱点..发现magento默认就帮我们实现了第一条需求

我现在暂且没有去抠magento是如何实现的,我们继续完成我们的第二条需求.找到

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1design/fronted/xxx/template/checkout/onepage/shipping_method/available.phtml

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01<?php if (!($_shippingRateGroups = $this->getShippingRates())): ?>

02<p><?php echo $this->__('Sorry, no quotes are available for this order at this time.') ?></p>

03<?php else: ?>

04<dl class="sp-methods">

05<?php $min=array();?>

06<?php $_sole = count($_shippingRateGroups) == 1; foreach ($_shippingRateGroups as $code => $_rates): ?>

07<dt><?php echo $this->getCarrierName($code) ?></dt>

08<dd>

09<ul>

10<?php $_sole = $_sole && count($_rates) == 1; foreach ($_rates as $_rate): ?>

11<li>

12<?php if ($_rate->getErrorMessage()): ?>

13<ul class="messages"><li class="error-msg"><ul><li><?php echo $_rate->getErrorMessage() ?></li></ul></li></ul>

14<?php else: ?>

15<?php if ($_sole) : ?>

16<span class="no-display"><input name="shipping_method" type="radio" value="<?php echo $_rate->getCode() ?>" id="s_method_<?php echo $_rate->getCode() ?>" checked="checked" /></span>

17<?php else: ?>

18<input name="shipping_method" type="radio" value="<?php echo $_rate->getCode() ?>" id="s_method_<?php echo $_rate->getCode() ?>"<?php if($_rate->getCode()===$this->getAddressShippingMethod()) echo ' checked="checked"' ?> class="radio" />

19<?php endif; ?>

20<label for="s_method_<?php echo $_rate->getCode() ?>"><?php echo $_rate->getMethodTitle() ?>

21<?php $_excl = $this->getShippingPrice($_rate->getPrice(), $this->helper('tax')->displayShippingPriceIncludingTax()); ?>

22<?php $_incl = $this->getShippingPrice($_rate->getPrice(), true);

23$min['s_method_'.$_rate->getCode()]=$_rate->getPrice();

24?>

25<?php echo $_excl; ?>

26<?php if ($this->helper('tax')->displayShippingBothPrices() && $_incl != $_excl): ?>

27(<?php echo $this->__('Incl. Tax'); ?> <?php echo $_incl; ?>)

28<?php endif; ?>

29</label>

30<?php endif ?>

31</li>

32<?php endforeach; ?>

33</ul>

34</dd>

35<?php endforeach; ?><?php

36foreach ($min as $key=>$val) if (empty($minval) || $val<$minval) $minval=$val;

37foreach ($min as $key=>$val) if ($val==$minval){$max_arr[$key]=$val;$maxkey=$key;} ;

38?>

39<script type="text/javascript">

40jQuery('<?php echo"#".$maxkey?>').attr("checked",true)

41</script>

42</dl>

43<?php endif; ?>

大家直接复制过去就好了,我再来解释下如何实现默认选中最便宜的快递方式

首先我们定义一个空的数组..$min然后在

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1<?php $_sole = $_sole && count($_rates) == 1; foreach ($_rates as $_rate): ?>

这个循环中加入

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1$min['s_method_'.$_rate->getCode()]=$_rate->getPrice();

这个数组是用每个快递方式的input的id值作为数组的key,用邮费作为值

然后我们再求出数组中最小的值就OK了

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print?

1foreach ($min as $key=>$val) if (empty($minval) || $val<$minval) $minval=$val;

2foreach ($min as $key=>$val) if ($val==$minval){$max_arr[$key]=$val;$maxkey=$key;} ;

最后还是通过jQuery的方式来默认选中我们的单选框

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print?

1<script type="text/javascript">

2jQuery('<?php echo"#".$maxkey?>').attr("checked",true)

3</script>

测试..效果出来了,收工