ECSHOP后台自定义价格区间

2016-06-13 13:05 来源:www.chinab4c.com 作者:ecshop专家

众所周知,ECSHOP的价格区间是在后台设置一个“价格区间个数”,然后由程序来自动平分,很多ECSHOP网店主都认为这样做,有很大不尽人意的地方。 也有人提供过修改方法,好像只是在模板文件里手动写死几个区间的一种方法,还是不能自由定义。 下面我要讲的方法是可以在ECSHOP后台自由定义价格区间(例如:1-30,31-200,201-1000,1001-5000,5000以上),前台自动体现的一种方法,而且每个类别的价格区间可以任意设置,让价格区间更人性化。 首先我们来修改ECSHOP的数据库结构,目的是给 ecs_category 增加一个新字段, 进入 后台 》 数据库管理  》SQL查询,执行下面的SQL语句 ALTER TABLE `ecs_category` ADD `grade_define` VARCHAR( 255 ) NOT NULL AFTER `grade` 注意:这里我使用的是 默认数据库前缀ecs_,如果你的数据库前缀不是 ecs_  , 请修改之。 2)、 打开 /admin/templates/category_info.htm 找到         {$lang.notice_style}{$lang.grade}:                  
                          将它修改为         自定义价格区间:                  
                        3)、 接着打开  /admin/category.php 文件,搜索 $cat['grade']        = !empty($_POST['grade'])        ? intval($_POST['grade'])      : 0;   一共能搜到两处,在每一处的下面都增加代码(注意是每一处)   $cat['grade_define']  = !empty($_POST['grade_define']) ? trim($_POST['grade_define'])  : '';  //自定义价格区间 by zhangyh   到此,后台管理部分修改完毕。  4)、 下面开始修改前台部分  打开  /category.php 找到     if ($cat['grade'] == 0  && $cat['parent_id'] != 0)     {         $cat['grade'] = get_parent_grade($cat_id); //如果当前分类级别为空,取最近的上级分类     }     if ($cat['grade'] > 1)     {                         $sql = "SELECT min(g.shop_price) AS min, max(g.shop_price) as max ".                " FROM " . $ecs->table('goods'). " AS g ".                " WHERE ($children OR " . get_extension_goods($children) . ') AND g.is_delete = 0 AND g.is_on_sale = 1 AND g.is_alone_sale = 1  ';                //获得当前分类下商品价格的最大值、最小值         $row = $db->getRow($sql);         // 取得价格分级最小单位级数,比如,千元商品最小以100为级数         $price_grade = 0.0001;         for($i=-2; $i<= log10($row['max']); $i++)         {             $price_grade *= 10;         }         //跨度         $dx = ceil(($row['max'] - $row['min']) / ($cat['grade']) / $price_grade) * $price_grade;         if($dx == 0)         {             $dx = $price_grade;         }         for($i = 1; $row['min'] > $dx * $i; $i ++);         for($j = 1; $row['min'] > $dx * ($i-1) + $price_grade * $j; $j++);         $row['min'] = $dx * ($i-1) + $price_grade * ($j - 1);         for(; $row['max'] >= $dx * $i; $i ++);         $row['max'] = $dx * ($i) + $price_grade * ($j - 1);         $sql = "SELECT (FLOOR((g.shop_price - $row[min]) / $dx)) AS sn, COUNT(*) AS goods_num  ".                " FROM " . $ecs->table('goods') . " AS g ".                " WHERE ($children OR " . get_extension_goods($children) . ') AND g.is_delete = 0 AND g.is_on_sale = 1 AND g.is_alone_sale = 1 '.                " GROUP BY sn ";         $price_grade = $db->getAll($sql);         foreach ($price_grade as $key=>$val)         {             $temp_key = $key + 1;             $price_grade[$temp_key]['goods_num'] = $val['goods_num'];             $price_grade[$temp_key]['start'] = $row['min'] + round($dx * $val['sn']);             $price_grade[$temp_key]['end'] = $row['min'] + round($dx * ($val['sn'] + 1));             $price_grade[$temp_key]['price_range'] = $price_grade[$temp_key]['start'] . ' - ' . $price_grade[$temp_key]['end'];             $price_grade[$temp_key]['formated_start'] = price_format($price_grade[$temp_key]['start']);             $price_grade[$temp_key]['formated_end'] = price_format($price_grade[$temp_key]['end']);             $price_grade[$temp_key]['url'] = build_uri('category', array('cid'=>$cat_id, 'bid'=>$brand, 'price_min'=>$price_grade[$temp_key]['start'], 'price_max'=> $price_grade[$temp_key]['end'], 'filter_attr'=>$filter_attr_str), $cat['cat_name']);                         if (isset($_REQUEST['price_min']) && $price_grade[$temp_key]['start'] == $price_min && $price_grade[$temp_key]['end'] == $price_max)             {                 $price_grade[$temp_key]['selected'] = 1;             }             else             {                 $price_grade[$temp_key]['selected'] = 0;             }         }         $price_grade[0]['start'] = 0;         $price_grade[0]['end'] = 0;         $price_grade[0]['price_range'] = $_LANG['all_attribute'];         $price_grade[0]['url'] = build_uri('category', array('cid'=>$cat_id, 'bid'=>$brand, 'price_min'=>0, 'price_max'=> 0, 'filter_attr'=>$filter_attr_str), $cat['cat_name']);         $price_grade[0]['selected'] = empty($price_max) ? 1 : 0;         $smarty->assign('price_grade',     $price_grade);     } 将它替换为  if($cat['grade_define'])  {  $price_grade=array();  $price_grade[0]['start'] = 0;     $price_grade[0]['end'] = 0;     $price_grade[0]['price_range'] = $_LANG['all_attribute'];     $price_grade[0]['url'] = build_uri('category', array('cid'=>$cat_id, 'bid'=>$brand,   'price_min'=>0, 'price_max'=> 0, 'filter_attr'=>$filter_attr_str), $cat['cat_name']);     $price_grade[0]['selected'] = empty($price_max) ? 1 : 0;  $grade_temp=explode(",", $cat['grade_define']);  foreach($grade_temp as $grade_temp_key=>$grade_temp_val)  {   $grade_temp_key2=$grade_temp_key+1;   $grade_temp=explode("-", $grade_temp_val);   $price_grade[$grade_temp_key2]['start']=intval($grade_temp[0]);   $price_grade[$grade_temp_key2]['end']=$grade_temp[1] ?    intval($grade_temp[1]) : "999999999";   $price_grade[$grade_temp_key2]['price_range'] = $grade_temp_val;   $price_grade[$grade_temp_key2]['url'] = build_uri('category', array('cid'=>$cat_id,    'bid'=>$brand, 'price_min'=>$price_grade[$grade_temp_key2]['start'],    'price_max'=> $price_grade[$grade_temp_key2]['end'],    'filter_attr'=>$filter_attr_str), $cat['cat_name']);                     if (isset($_REQUEST['price_min'])     && $price_grade[$grade_temp_key2]['start'] == $price_min     && $price_grade[$grade_temp_key2]['end'] == $price_max)             {                 $price_grade[$grade_temp_key2]['selected'] = 1;             }             else             {                 $price_grade[$grade_temp_key2]['selected'] = 0;             }  }  $smarty->assign('price_grade',     $price_grade);  } 最后一步,找到 return $GLOBALS['db']->getRow('SELECT cat_name, keywords, cat_desc, style, grade, filter_attr, parent_id FROM ' . $GLOBALS['ecs']->table('category') .         " WHERE cat_id = '$cat_id'"); 将之修改为 return $GLOBALS['db']->getRow('SELECT cat_name, keywords, cat_desc, style, grade, grade_define, filter_attr, parent_id FROM ' . $GLOBALS['ecs']->table('category') .         " WHERE cat_id = '$cat_id'");