ecshop商品限制购买和批发起订数量的实行方法

做过商城，或者说经营过商城的都会知道，有很多商品利润很小，而且还要包运费什么的，所以根本就是做 的生意，如果利润小，数量多的话  这样就不会出现赔本的损失。所以 ECSHOP商品限制购买批发起订数量插件也是很实用的插件,就是如果在后台设置商品很小起订量
第一步，商品表必须有个字段  代表某个商品很小订购数量->min_number
打开goods表   在最后字段添加一个min_number  tinyint类型默认值为0  代表没有很小起订量

sql:alter table `ecs_goods` add column `min_number` tinyint (3) UNSIGNED  DEFAULT '0' NOT NULL  after `warn_number`;

第二部,在后台添加商品的时候 必须有个text文本框  设置很小起订量
admin/goods.php
在'warn_number'=> 1 , 代码行后插入'min_number'=> 0,
在

$warn_number = isset($_POST['warn_number']) ? $_POST['warn_number'] : 0;

后添加代码

$min_number = isset($_POST['min_number']) ? $_POST['min_number'] : 0;

第三部修改添加商品sql语句
将

/* 入库 */
if ($is_insert)
{
if ($code == '')
{
....由于发帖篇幅的限制省略原有代码无数
}
else
{
......
}
}
else
{
/* 如果有上传图片，删除原来的商品图 */
.....
}

修改代码

if ($is_insert){ 
if ($code == ''){
 $sql = "INSERT INTO " . $ecs->table('goods') . " (goods_name, goods_name_style, goods_sn, " .
"cat_id, brand_id, shop_price, market_price, is_promote, promote_price, " .
   "promote_start_date, promote_end_date, goods_img, goods_thumb, original_img,keywords, goods_brief, " .
   "seller_note, goods_weight, goods_number, warn_number,min_number, integral,give_integral, is_best, is_new, is_hot, ".
   "is_on_sale, is_alone_sale, goods_desc, add_time, last_update, goods_type,rank_integral)" .
  "VALUES ('$_POST[goods_name]', '$goods_name_style', '$goods_sn', '$catgory_id', " .
   "'$brand_id', '$shop_price', '$market_price', '$is_promote','$promote_price', ".
   "'$promote_start_date', '$promote_end_date', '$goods_img', '$goods_thumb', '$original_img', ".
   "'$_POST[keywords]', '$_POST[goods_brief]', '$_POST[seller_note]', '$goods_weight','$goods_number',".
   "'$warn_number','$min_number', '$_POST[integral]', '$give_integral', '$is_best', '$is_new', '$is_hot', '$is_on_sale', '$is_alone_sale', ".
   "'$_POST[goods_desc]', '" . gmtime() . "', '". gmtime() ."', '$goods_type','$rank_integral')";
}else{
 $sql = "INSERT INTO " . $ecs->table('goods') . " (goods_name, goods_name_style, goods_sn, ".
    "cat_id, brand_id, shop_price, market_price, is_promote, promote_price, " .
 "promote_start_date, promote_end_date, goods_img, goods_thumb, original_img,keywords, goods_brief, " .
 "seller_note, goods_weight, goods_number, warn_number, min_number,integral,give_integral, is_best, is_new, is_hot, is_real, " .
 "is_on_sale, is_alone_sale, goods_desc, add_time, last_update, goods_type,extension_code, rank_integral)" .
 "VALUES ('$_POST[goods_name]', '$goods_name_style', '$goods_sn', '$catgory_id', " .
 "'$brand_id', '$shop_price', '$market_price', '$is_promote','$promote_price', ".
 "'$promote_start_date', '$promote_end_date', '$goods_img', '$goods_thumb','$original_img', ".
 "'$_POST[keywords]', '$_POST[goods_brief]', '$_POST[seller_note]', '$goods_weight','$goods_number',".
 " '$warn_number','$min_number', '$_POST[integral]', '$give_integral', '$is_best','$is_new', '$is_hot', 0, '$is_on_sale', '$is_alone_sale’' ".
 " '$_POST[goods_desc]', '" . gmtime() . "', '". gmtime() ."', '$goods_type', '$code', '$rank_integral')";
}
    }else{
 $sql = "SELECT goods_thumb, goods_img, original_img " .
   " FROM " . $ecs->table('goods') .
  " WHERE goods_id = '$_REQUEST[goods_id]'";
 $row = $db->getRow($sql);
 if ($proc_thumb && $goods_img && $row['goods_img'] &&
 !goods_parse_url($row['goods_img']))
 {
  @unlink(ROOT_PATH . $row['goods_img']);
  @unlink(ROOT_PATH . $row['original_img']);
 }
 if ($proc_thumb && $goods_thumb && $row['goods_thumb'] && !goods_parse_url($row['goods_thumb']))
 {
  @unlink(ROOT_PATH . $row['goods_thumb']);
 }
  $sql = "UPDATE " . $ecs->table('goods') . " SET " .
  "goods_name = '$_POST[goods_name]', " .
  "goods_name_style = '$goods_name_style', " .
  "goods_sn = '$goods_sn', " .
  "cat_id = '$catgory_id', " .
  "brand_id = '$brand_id', " .
  "shop_price = '$shop_price', " .
  "market_price = '$market_price', " .
  "is_promote = '$is_promote', " .
  "promote_price = '$promote_price', " .
  "promote_start_date = '$promote_start_date', " .
  "promote_end_date = '$promote_end_date', ";
  if ($goods_img)
  {
   $sql .= "goods_img = '$goods_img', original_img = '$original_img', ";
  }
  if ($goods_thumb)
  {
   $sql .= "goods_thumb = '$goods_thumb', ";
  }
  if ($code != '')
  {
   $sql .= "is_real=0, extension_code='$code', ";
  }
  $sql .= "keywords = '$_POST[keywords]', " .
   "goods_brief = '$_POST[goods_brief]', " .
   "seller_note = '$_POST[seller_note]', " .
   "goods_weight = '$goods_weight'," .
   "goods_number = '$goods_number', " .
   "warn_number = '$warn_number', " .
   "min_number = '$min_number', " .
   "integral = '$_POST[integral]', " .
   "give_integral = '$give_integral', " .
   "rank_integral = '$rank_integral', " .
   "is_best = '$is_best', " .
   "is_new = '$is_new', " .
   "is_hot = '$is_hot', " .
   "is_on_sale = '$is_on_sale', " .
   "is_alone_sale = '$is_alone_sale', " .
   "goods_desc = '$_POST[goods_desc]', " .
   "last_update = '". gmtime() ."', ".
   "goods_type = '$goods_type' " .
   "WHERE goods_id = '$_REQUEST[goods_id]' LIMIT 1";
}

第四步修改后台模板文件(在市场价会员价  后边添加设置很小起订量)
admin/templates/goods_info.htm
在

<tr>
 <td class="label">{$lang.lab_shop_price}</td>
 <td><input type="text" name="market_price" value="{$goods.shop_price}" size="20" />
 <input type="button" value="{$lang.integral_market_price}" onclick="integral_market_price()" />{$lang.require_field}</td>
</tr>

添加

<!-- 新增 批发数量限制 begin -->
<tr>
  <td class="label">{$lang.lab_min_number}</td>
  <td><input type="text" name="min_number" value="{$goods.min_number}" size="20" />
 <span class="notice-span" {if $help_open}style="display:block" {else} style="display:none" mce_style="display: none;" {/if} id="minNumber">{$lang.notice_min_number}</span>
  </td>
  </td>
</tr>
<!-- 批发数量限制 end -->

第五步:修改语言languages/zh_cn/admin/goods.php
最后添加

$_LANG['lab_min_number']       = '很小购买数量:';
$_LANG['notice_min_number']    = '该商品很小购买数量,0表示按购买数量 制.'

到现在位置 后台设置全部结束了，不知道大家能懂了没有下面我们说说前台如何来实现我以ecshop官方模板为例子给大家讲解
想做起订量限制，这个必然是在商品购买页面  购买数量框来做限制最简单的办法就是用JS当然还有别的办法；首先给那些如果给了起订量的商品  购买页面直接显示默认最少购买数量如果在后台设置的AA商品最少5个    那么进入AA商品页面购买数量默认值就是5
我这样来实现
修改themes/default/goods.dwt

<input name="number" type="text" id="number" value="1" size="4" onBlur="changePrice()" style="border:1px solid #ccc; " mce_style="border: 1px solid #ccc;"/>

改成

<input name="number" type="text" id="number" value="{$goods.min_number|default:"1"}" size="4" onblur="changePrice()" style=”border:1px solid #ccc; " mce_style="border: 1px solid #ccc;"/><br/>

这样就是value  也就是默认值了
最后添加JS判断就好了
themes/default/goods.dwt
在

var qty = document.forms['ECS_FORMBUY'].elements['number'].value;

后添加

{if $goods.min_number}
if(qty < {$goods.min_number})
{
alert('您输入的数字小于此商品很小购买数量：{$goods.min_number}');
qty = {$goods.min_number};
}
{/if}

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