PHP.38-TP框架商城应用实例-后台14-商品管理-商品扩展分类的删除、修改

商品分类删除

1、删除商品时，根据商品id删除扩展分类表数据

商品扩展分类修改

1、在控制器GoodsController.class.php/edit()中根据商品id取出对应的所有扩展分类

2、在修改页面edit.html中显示对应扩展分类foreach，类似添加页面

　　注：考虑当没有扩展分类时的显示，使用if($gcData)

3、在模型类GoodsModel.class.php/_before_update()中处理扩展分类，先删除原数据，再插入新数据【多对多时，通常的用法】

<?php
    namespace Admin\Model;
    use Think\Model;

    class GoodsModel extends Model
    {
        //添加调用create方法允许接收的字段
        protected $insertFields = 'goods_name,market_price,shop_price,is_on_sale,goods_desc,brand_id,cat_id';
        //修改调用create方法允许接收的字段
        protected $updateFields = 'id,goods_name,market_price,shop_price,is_on_sale,goods_desc,brand_id,cat_id';

        //定义验证规则    validate:TP模型层提供的一种数据验证方法
            //a.静态方式：在模型类里面通过$_validate属性定义验证规则。b.动态方式：使用模型类的validate方法动态创建自动验证规则
            //定义好验证规则后，就可以在使用create方法创建数据对象的时候自动调用
        protected $_validate = array(
            array('cat_id', 'require', '必须选择主分类', '1'),
            array('goods_name', 'require', '商品名称不能为空！', '1'),
            array('market_price', 'currency', '市场价格必须是货币！', '1'),
            array('shop_price', 'currency', '本店价格必须是货币类型！', '1'),
        );

        //钩子方法_before_insert:添加前插入，在添加前会自动调用
        //第一个参数：表单中即将要被插入数据库中的数据=>数组
        //&按引用传递：函数外部的变量的值要在函数内部修改的话，必须按引用传递，除非传递的为对象，因为对象默认按引用传递
        protected function _before_insert(&$data, $option)
        {
            $id = $option['where']['id'];    //要修改的商品的ID

            /**************处理LOGO******************/
            //判断有没有选择图片
            if($_FILES['logo']['error'] == 0)
            {
                $ret = uploadOne('logo', 'Goods', array(
                    array(700, 700),
                    array(350, 350),
                    array(130, 130),
                    array(50, 50),
                ));
                $data['logo'] = $ret['images'][0];
                $data['mbig_logo'] = $ret['images'][1];
                $data['big_logo'] = $ret['images'][2];
                $data['mid_logo'] = $ret['images'][3];
                $data['sm_logo'] = $ret['images'][4];
            }
            //获取当前时间并添加到表单中，这样就会插入数据库中
            $data['addtime'] = date('Y-m-d H:i:s', time());

            //过滤这个字段    【必须对所有输入内容进行过滤】
            $data['goods_desc'] = removeXSS($_POST['goods_desc']);
        }

        //钩子方法_before_update:更新前插入，在添加前会自动调用
        protected function _before_update(&$data, $option)
        {
            $id = $option['where']['id'];    //要修改的商品的ID
            /**********处理扩展分类【类似删除会员价格】*************/
            $ecid = I('post.ext_cat_id');
            $gcModel = M('goods_cat');
            //先删除原分类数据(根据商品id)
            $gcModel->where(array(
                'goods_id' => array('eq', $id),
            ))->delete();
            if($ecid)
            {
                foreach ($ecid as $k => $v)
                {
                    if(empty($v))    //避免插入空数据
                        continue;
                    $gcModel->add(array(
                        'cat_id' => $v,
                        'goods_id' => $id,
                    ));
                }
            }

            /**************处理LOGO******************/
            //判断有没有选择图片
            if($_FILES['logo']['error'] == 0)
            {
                $ret = uploadOne('logo', 'Goods', array(
                    array(700, 700),
                    array(350, 350),
                    array(130, 130),
                    array(50, 50),
                ));
                $data['logo'] = $ret['images'][0];
                $data['mbig_logo'] = $ret['images'][1];
                $data['big_logo'] = $ret['images'][2];
                $data['mid_logo'] = $ret['images'][3];
                $data['sm_logo'] = $ret['images'][4];

                    //先查询出原来的图片的路径
                $oldLogo = $this->field('logo,mbig_logo,big_logo,mid_logo,sm_logo')->find($id);
                    //从硬盘上删除图片
                deleteImage($oldLogo);
            }

            /**********商品相册处理********/
            if(isset($_FILES['pic']))    //先判断是否有上传
            {
                $pics = array();
                //var_dump($_FILES['pic']['name']);die();
                //二维数组转成一维
                foreach ($_FILES['pic']['name'] as $k => $v)
                {
                    $pics[] = array(
                        'name' => $v,
                        'type' => $_FILES['pic']['type'][$k],
                        'tmp_name' => $_FILES['pic']['tmp_name'][$k],
                        'error' => $_FILES['pic']['error'][$k],
                        'size' => $_FILES['pic']['size'][$k],
                    );
                }
                //var_dump($pics);die();
                $_FILES = $pics;    //把处理好的数组赋给$_FILES,因为uploadOne函数是在$_FILES中获取图片的
                $gpModel = M('goods_pic');
                //循环每个上传
                foreach ($pics as $k => $v)
                {
                    if($v['error'] == 0)
                    {
                        $ret = uploadOne($k, 'Goods', array(
                            array(650, 650),
                            array(350, 350),
                            array(50, 50),
                        ));
                        //var_dump($ret);die();
                        if($ret['ok'] == 1)
                        {
                            $gpModel->add(array(
                                'pic' => $ret['images'][0],
                                'big_pic' => $ret['images'][1],
                                'mid_pic' => $ret['images'][2],
                                'sm_pic' => $ret['images'][3],
                                'goods_id' => $id,
                            ));
                        }
                    }
                }
            }
            /************处理会员价格****************/
            $mp = I('post.member_price');
            $mpModel = M('member_price');
            //先删除原来的会员价格
            $mpModel->where(array(
                'goods_id' => array('eq', $id),
            ))->delete();
            foreach ($mp as $k => $v)
            {
                $_v = (float)$v;
                //如果设置了会员价格就插入到表中
                if($_v > 0)
                {
                    $mpModel->add(array(
                        'price' => $_v,
                        'level_id' => $k,
                        'goods_id' => $id,
                    ));
                }
            }

            //过滤这个字段    【必须对所有输入内容进行过滤】
            $data['goods_desc'] = removeXSS($_POST['goods_desc']);
        }

        //钩子方法_before_delete：删除前的操作
        protected function _before_delete($option)
        {
            $id = $option['where']['id'];    //要删除的商品的ID
            /**********删除扩展分类(根据商品id)*********/
            $gcModel = M('goods_cat');
            $gcModel->where(array(
                'goods_id' => array('eq', $id),
            ))->delete();

            /***********删除商品相片********/
            //先查询出原商品相册的路径
            $gpModel = M('goods_pic');
            $pics = $gpModel->field('pic,sm_pic,mid_pic,big_pic')->where(array(
                'goods_id' => array('eq', $id),
            ))->select();
            foreach ($pics as $k => $v){
                deleteImage($v);        //$v是一个数组
            }
            $gpModel->where(array(        //根据商品id删除数据库中的路径信息
                'goods_id' => array('eq', $id),
            ))->delete();

            /***********删除LOGO********/
            //先查询出原来的图片的路径
            $oldLogo = $this->field('logo,mbig_logo,big_logo,mid_logo,sm_logo')->find($id);
            deleteImage($oldLogo);
            /****** 删除会员价格 ********/
            //根据商品表id 删除操作【后用了外键级联删除，则不需要写这段代码】
            /* $mpModel = D('member_price');
            $mpModel->where(array(
                'goods_id' => array('eq', $id),
            ))->delete(); */
        }

        //钩子方法_after_insert:添加操作成功后执行
        protected function _after_insert($data, $option)
        {
            /***************处理扩展分类**************/
            $ecid = I('post.ext_cat_id');
            if($ecid)
            {
                $gcModel = M('goods_cat');
                foreach ($ecid as $k => $v)
                {
                    if(empty($v))
                        continue;
                    $gcModel->add(array(
                        'cat_id' => $v,
                        'goods_id' => $data['id'],
                    ));
                }
            }

            /**********商品相册处理********/
            $pics = array();
            //var_dump($_FILES['pic']['name']);die();
            //二维数组转成一维
            foreach ($_FILES['pic']['name'] as $k => $v)
            {
                $pics[] = array(
                    'name' => $v,
                    'type' => $_FILES['pic']['type'][$k],
                    'tmp_name' => $_FILES['pic']['tmp_name'][$k],
                    'error' => $_FILES['pic']['error'][$k],
                    'size' => $_FILES['pic']['size'][$k],
                );
            }
            //var_dump($pics);die();
            $_FILES = $pics;    //把处理好的数组赋给$_FILES,因为uploadOne函数是在$_FILES中获取图片的
            $gpModel = M('goods_pic');
            //循环每个上传
            foreach ($pics as $k => $v)
            {
                if($v['error'] == 0)
                {
                    $ret = uploadOne($k, 'Goods', array(
                        array(650, 650),
                        array(350, 350),
                        array(50, 50),
                    ));
                    //var_dump($ret);die();
                    if($ret['ok'] == 1)
                    {
                        $gpModel->add(array(
                            'pic' => $ret['images'][0],
                            'big_pic' => $ret['images'][1],
                            'mid_pic' => $ret['images'][2],
                            'sm_pic' => $ret['images'][3],
                            'goods_id' => $data['id'],
                        ));
                    }
                }
            }
            /**********会员价格处理********/
            $mp = I('post.member_price');    //接收post提交过来的会员价格数据
            $mpModel = D('member_price');
            foreach ($mp as $k => $v)
            {
                $_v = (float)$v;    //强制转为浮点型，以免插入字符等错误数据
                //设置会员价格>0就插入到表中
                if($_v > 0)
                {
                    $mpModel->add(array(
                        'price' => $_v,
                        'level_id' => $k,        //级别Id
                        'goods_id' => $data['id'],
                    ));
                }
            }
        }

        /**
         *实现翻页、搜索、排序
         *
         */
        public function search($perPage = 5)    //$perPage控制显示条数
        {
            /***********搜索(获取get提交的数据)************/
            $where =array();    //空的where条件
                //商品名称
            $gn = I('get.gn');
            if($gn)
                $where['a.goods_name'] = array('like', "%$gn%");    //WHERE goods_name LIKE '%$gn%'
                //品牌
            $brandId = I('get.brand_id');
            if($brandId)
                $where['a.brand_id'] = array('eq', "$brandId");    //WHERE goods_name LIKE '%$gn%'
                /***主分类搜索***/
            $catId = I('get.cat_id');
            if($catId)
            {
                //先查询出这个分类ID下所有的商品ID
                $gids = $this->getGoodsIdByCatId($catId);

                //搜索出所有这些id下的商品
                $where['a.id'] = array('in', $gids);
            }
                //市场价格
            $fp = I('get.fp');
            $tp = I('get.tp');
            if($fp && $tp)
                $where['a.shop_price'] = array('between', array($fp, $tp));    //WHERE shop_price BETWEEN $fp AND $tp
            elseif($fp)
                $where['a.shop_price'] = array('egt', $fp);    //WHERE shop_price >= $fp
            elseif($tp)
                $where['a.shop_price'] = array('elt', $tp);    //WHERE shop_price <= $tp
                //是否上架
            $ios = I('get.ios');
            if($ios)
                $where['a.is_on_sale'] = array('eq', $ios);    //WHERE is_on_sale = $ios
                //添加时间
            $fa = I('get.fa');
            $ta = I('get.ta');
            if($fa && $ta)
                $where['a.addtime'] = array('between', array($fa, $ta));    //WHERE addtime BETWEEN $fa ADD $ta
            elseif($fa)
                $where['a.addtime'] = array('egt', $fa);    //WHERE addtime >= $fa
            elseif($ta)
                $where['a.addtime'] = array('elt', $ta);    //WHERE addtime <= $ta

            /***********翻页**********/
                //取出总的记录数
            $count = $this->alias('a')->where($where)->count();
                //生成翻页类的对象
            $pageObj = new \Think\Page($count, $perPage);
                //设置样式
            $pageObj->setConfig('next', '下一页');
            $pageObj->setConfig('prev', '上一页');
                //生成页面下面显示的上一页、下一页的字符串
            $pageString = $pageObj->show();

            /**********排序********************/
            $orderby = 'a.id';        //默认的排序字段
            $orderway = 'desc';        //默认的排序方式（降序）
            $odby = I('get.odby');
            if($odby)
            {
                if($odby == 'id_asc')    //时间升序，id为自增
                    $orderway = 'asc';
                elseif($odby == 'price_desc')    //价格降序（默认降序）
                    $orderby = 'a.shop_price';
                elseif($odby == 'price_asc')    //价格升序
                {
                    $orderby = 'a.shop_price';
                    $orderway = 'asc';
                }
            }

            /**********取某一页的数据**********/
            /***
             * SELECT a.*,b.brand_name FROM p39_goods a LEFT JOIN p39_brand b ON a.brand_id=b.id;
             **/

            $data = $this->order("$orderby $orderway")
            ->field('a.*, b.brand_name, c.cat_name,GROUP_CONCAT(e.cat_name SEPARATOR "<br />") ext_cat_name')
            ->alias('a')                //加别名
            ->join('LEFT JOIN __BRAND__ b ON a.brand_id=b.id
                   LEFT JOIN __CATEGORY__ c ON a.cat_id=c.id
                   LEFT JOIN __GOODS_CAT__ d ON a.id=d.goods_id
                   LEFT JOIN __CATEGORY__ e ON d.cat_id=e.id')
            ->where($where)                                            //搜索
            ->limit($pageObj->firstRow.','.$pageObj->listRows)        //翻页
            ->group('a.id')                //以商品id分组
            ->select();

            /************返回数据$data*************/
            return array(
                'data' => $data,    //数据
                'page' => $pageString,    //翻页字符串
            );
        }

        /**
         *    取出一个分类下所有商品的ID【既考虑主分类也考虑扩展分类】
         **/
        public function getGoodsIdByCatId($catId)
        {
            //先取出所有子分类的ID        【$catId=>传入是搜索的分类ID】
            $catModel = D('category');
            $children = $catModel->getChildren($catId);
            //和子分类放一起            【子分类为扩展分类，也应该被搜索出来】
            $children[] = $catId;
            /********************取出主分类或者扩展分类在这下分类中的商品*******/
            //取出主分类下的商品Id
            $gids = $this->field('id')->where(array(
                'cat_id' => array('in', $children),        //主分类下的商品
            ))->select();
            //取出扩展分类下的商品ID
            $gcModel = M('goods_cat');
            $gids1 = $gcModel->field('DISTINCT goods_id id')->where(array(
                'cat_id' => array('IN', $children)
            ))->select();
            //把主分类的ID和扩展分类下的商品ID合并成二维数据【两个都不为空】
            if($gids && $gids1)
                $gids = array_merge($gids, $gids1);        //合并数组
            elseif ($gids1)
                $gids = $gids1;
            //二维转一维
            $id = array();
            foreach ($gids as $k => $v)
            {
                if(!in_array($v['id'], $id))
                    $id[] = $v['id'];
            }
            return $id;
        }

    }
?>

GoodsModel.class.php