ecshop实现最小购买数量的控制

      ecshop实现最小购买数量的控制，这个功能是十分有用的。特别是通过ecshop来做批发站的，如果我们想控制某个商品，必须达到某个购买数量的时候，才允许购买。那么我们就可以在录入商品的时候，直接控制该商品。通过结合ecshop的ajax来达到目的。

1:

alter table ecs_goods add column min_buy int(1) default 1;

2:admin/templates/goods_info.htm

  <tr>
            <td class="label">
           最小购买数量：</td>
            <td><input type="text" name="min_buy" value="{$goods.min_buy}" size="20" /></td>
          </tr>

3:admin/goods.php的insert

 $min_buy = isset($_POST['min_buy']) ? intval($_POST['min_buy']) : '1';

if ($code == '')
        {
            $sql = "INSERT INTO " . $ecs->table('goods') . " (goods_name, goods_name_style, goods_sn, " .
                    "cat_id, brand_id, shop_price, market_price, is_promote, promote_price, " .
                    "promote_start_date, promote_end_date, goods_img, goods_thumb, original_img, keywords, goods_brief, " .
                    "seller_note, goods_weight, goods_number, warn_number, integral, give_integral, is_best, is_new, is_hot, " .
                    "is_on_sale, is_alone_sale, is_shipping, goods_desc, add_time, last_update, goods_type, rank_integral, suppliers_id,min_buy)" .
                "VALUES ('$_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',".
                    " '$warn_number', '$_POST[integral]', '$give_integral', '$is_best', '$is_new', '$is_hot', '$is_on_sale', '$is_alone_sale', $is_shipping, ".
                    " '$_POST[goods_desc]', '" . gmtime() . "', '". gmtime() ."', '$goods_type', '$rank_integral', '$suppliers_id','$min_buy')";
        }
        else
        {
            $sql = "INSERT INTO " . $ecs->table('goods') . " (goods_name, goods_name_style, goods_sn, " .
                    "cat_id, brand_id, shop_price, market_price, is_promote, promote_price, " .
                    "promote_start_date, promote_end_date, goods_img, goods_thumb, original_img, keywords, goods_brief, " .
                    "seller_note, goods_weight, goods_number, warn_number, integral, give_integral, is_best, is_new, is_hot, is_real, " .
                    "is_on_sale, is_alone_sale, is_shipping, goods_desc, add_time, last_update, goods_type, extension_code, rank_integral,min_buy)" .
                "VALUES ('$_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',".
                    " '$warn_number', '$_POST[integral]', '$give_integral', '$is_best', '$is_new', '$is_hot', 0, '$is_on_sale', '$is_alone_sale', $is_shipping, ".
                    " '$_POST[goods_desc]', '" . gmtime() . "', '". gmtime() ."', '$goods_type', '$code', '$rank_integral','$min_buy')";
        }

"min_buy = '$min_buy', " .

  4:flow.php的addto_cart里面。我们可以这样做

   首先获取该商品ID下的min_buy,然后判断购买商品的数量和最小控制数量的逻辑，如果太小了。就提示不能购买该商品。必须大于该最小值才能进行购买。

   来源:http://www.chinab4c.com