最近在做商品sku的时候遇到了一些困惑,记录一下,以备日后会看。
先说一说需求:
1.根据选中的SKU,显示对应的SKU图片,没有选中的SKU时,默认展示SPU商品图,单击放大预览;
2.每个属性下属性值有多个时,默认不选,只有一个时,默认选中;
3.后台没有设置SKU时,则无属性值展示;
4.选中交互:选中某一个属性下属性值时,检查其他属性的属性值,哪些不能组合为一个SKU,不能组合的属性值只读,原选中的则取消选中。
已上就是给出的文字需求,在需求讨论的时候产品定了调调,通过既定的属性去确定一个sku,即所有未选择的属性假定一个初始值。一听心里乐了,所有选中的属性都已知,排序之后再匹配不就是轻松确定sku了嘛,美滋滋。
/** * 获取商品sku属性(初始默认选中,已经被否了呀) */ public function goods_sku_version_1 (){ $goodsId = $this->post['goods_id'] or $this->response(201, 'goods_id不能为空'); $catId = mall_database_execute('goods') ->where(['goods_id' => $goodsId, 'is_on_sale'=> 1, 'is_delete' => 0]) ->getField('goods_type') or $this->response(208, '商品不存在'); //构建查询条件 $where = ['gs.goods_id'=> $goodsId]; $attrArr = []; if (!empty($this->post['attr_id'])){ $attrArr = explode(',', $this->post['attr_id']); sort($attrArr); //升序 $where['gs.attr_id_arr'] = implode(',', $attrArr); } //获取sku信息 $this->rows['info'] = mall_database_execute('goods_sku')->alias('AS gs') ->where($where) ->find() or $this->response(208, 'sku不存在'); if (empty($this->post['attr_id'])) $attrArr = explode(',', $this->rows['info']['attr_id_arr']); //获取顶级sku列表 $this->rows['attribute'] = mall_database_execute('goods_sku_list')->alias('AS gsl') ->field('ga.attr_id, ga.attr_type, ga.attr_name, gsl.attr_values_arr') ->join(mall_database_table('goods_attribute').' AS ga ON ga.attr_id = gsl.attr_id', 'LEFT') ->where([ 'gsl.goods_id' => $goodsId, 'gsl.status' => 1 ]) ->select() ? : ''; if (!empty($this->rows['attribute'])){ //通过二定一待,确定sku foreach ($this->rows['attribute'] as $k=>&$v){ $newAttrArr = $attrArr; $newAttrArr[$k] = '%'; $str = implode(',', $newAttrArr); $v['option'] = mall_database_execute('goods_sku') ->field('goods_sku_id,attr_id_arr,status' ) ->where([ 'goods_id' => $goodsId, 'attr_id_arr' => ['LIKE', $str] ]) ->select(); if (!empty($v['option'])){ foreach ($v['option'] as &$vo){ $newAttrArr = explode(',', $vo['attr_id_arr']); $attrInfo = mall_database_execute('goods_attribute') ->field('attr_id, attr_type, attr_name') ->where([ 'attr_id' => $newAttrArr[$k] ]) ->find(); unset($vo['attr_id_arr']); $vo = array_merge($attrInfo, $vo); } } } } $this->response(); }
本以为这样就完事了,结果没过多久需求就改了,不假定每个属性的初始值,根据用户当前选择动态匹配sku,GG。这个方案一开始没想明白的点在于,基于用户当前选择,推算所有属性的节点是否还有可选的可能(可用sku),之前想到过这一层面,想着偷懒完成需求即可,便没有深究。
/** * 基于用户当前属性选择状态,获取sku,及推算每个属性的可选状态 */ public function goods_sku(){ $goodsId = $this->post['goods_id']; //检测商品是否存在 mall_database_execute('goods') ->where(['goods_id' => $goodsId, 'is_on_sale'=> 1, 'is_delete' => 0]) ->getField('goods_id') or $this->response(208, '商品不存在'); $where = [ 'goods_id' => $goodsId, 'status' => 1 ]; //获取所有可选sku的属性组合 $allSkuLists = array_column(mall_database_execute('goods_sku') ->field('attr_id_arr') ->where($where) ->select(), 'attr_id_arr'); $this->rows['sku_num'] = count($allSkuLists); if (!empty($this->post['attr_id'])){ $attrArr = explode(',', $this->post['attr_id']); foreach ($attrArr as &$vv){ if ($vv == '') $vv = '%'; } $where['old_id_arr'] = ['LIKE', implode(',', $attrArr)]; } //查询一个当前用户选择状态下满足条件的组合(先这样,等产品出了可能组合排序规则再完善) $this->rows['info'] = mall_database_execute('goods_sku') ->field('goods_sku_id,price,goods_number,attr_value,goods_thumb') ->where($where) ->find() ? : ''; if ($this->rows['info']['goods_thumb']) $this->rows['info']['goods_thumb'] = change_file_path($this->rows['info']['goods_thumb']); //获取规格 $attribute = mall_database_execute('goods_sku_list')->alias('AS gsl') ->field('ga.attr_id, ga.attr_type, ga.attr_name, gsl.attr_values_arr') ->join(mall_database_table('goods_attribute').' AS ga ON ga.attr_id = gsl.attr_id', 'LEFT') ->where([ 'gsl.goods_id' => $goodsId, 'gsl.status' => 1 ]) ->order('attr_type asc, attr_id asc') ->select(); if (!empty($attribute)){ //遍历获取所有规格的属性,并假定每种属性都不可选 foreach ($attribute as $k=>&$v){ $v['option'] = mall_database_execute('goods_attribute') ->field('attr_id,attr_type,attr_name,2 as status') ->where([ 'attr_id' => ['IN', $v['attr_values_arr']], 'status' => 1 ]) ->order('attr_id asc') ->select(); unset($v['attr_values_arr']); if (!empty($allSkuLists)){ //遍历所有属性判断基于用户选择状态下属性是否有可选方案 foreach ($v['option'] as &$vo){ //获取用户当前选择 $checkSku = explode(',', $this->post['attr_id']); //把当前属性与用户选择进行组合 $checkSku[$k] = $vo['attr_id']; //遍历所有可能的组合列表,查找是否有匹配当前的组合 foreach ($allSkuLists as $vov){ //判断条件:如果我有的你都有那就对了 $intersect = array_intersect($checkSku, explode(',', $vov)); asort($intersect); asort($checkSku); //序列化后做比较 if (implode(',', $intersect) == implode(',', array_filter($checkSku))) $vo['status'] = '1'; } } } } } $this->rows['attribute'] = $attribute ? : ''; $this->response(); }
附上表结构:
CREATE TABLE `fd_goods_sku` ( `goods_sku_id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '自增id', `goods_id` int(11) NOT NULL, `old_id_arr` varchar(255) NOT NULL DEFAULT '' COMMENT '没排序之前的id组合', `attr_id_arr` varchar(255) NOT NULL DEFAULT '0' COMMENT '属性id', `status` tinyint(1) NOT NULL DEFAULT '1' COMMENT '1正常,2失效', `price` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '售价,单位分', `goods_number` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '库存', `attr_value` varchar(255) NOT NULL DEFAULT '' COMMENT '商品自定义属性', `goods_thumb` varchar(255) NOT NULL DEFAULT '', `create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (`goods_sku_id`), KEY `goods_id` (`goods_id`,`goods_sku_id`) USING BTREE ) ENGINE=InnoDB AUTO_INCREMENT=2208 DEFAULT CHARSET=utf8mb4 COMMENT='商品sku表'; CREATE TABLE `fd_goods_sku_list` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `goods_id` int(10) unsigned NOT NULL, `attr_id` varchar(255) NOT NULL DEFAULT '' COMMENT '属性id', `attr_values_arr` varchar(255) NOT NULL DEFAULT '' COMMENT '属性值id', `status` tinyint(1) NOT NULL DEFAULT '1' COMMENT '1正常,2失效', `create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=599 DEFAULT CHARSET=utf8mb4 COMMENT='商品已选属性表';
以上仅作记录,如大神们有更好方案请不吝赐教。