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281 lines
7.9 KiB
281 lines
7.9 KiB
<?php
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namespace App\Http\Model;
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use DB;
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class Goods extends BaseModel
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{
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//产品模型
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/**
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* 关联到模型的数据表
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*
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* @var string
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*/
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protected $table = 'goods';
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/**
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* 表明模型是否应该被打上时间戳
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* 默认情况下，Eloquent 期望 created_at 和updated_at 已经存在于数据表中，如果你不想要这些 Laravel 自动管理的数据列，在模型类中设置 $timestamps 属性为 false
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*
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* @var bool
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*/
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public $timestamps = false;
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//protected $guarded = []; //$guarded包含你不想被赋值的字段数组。
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//protected $fillable = ['name']; //定义哪些字段是可以进行赋值的,与$guarded相反
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/**
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* The connection name for the model.
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* 默认情况下，所有的 Eloquent 模型使用应用配置中的默认数据库连接，如果你想要为模型指定不同的连接，可以通过 $connection 属性来设置
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* @var string
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*/
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//protected $connection = 'connection-name';
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//常用字段
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protected static $common_field = array(
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'id', 'typeid', 'tuijian', 'click', 'title', 'sn', 'price','litpic', 'pubdate', 'add_time', 'market_price', 'goods_number', 'sale', 'comments','promote_start_date','promote_price','promote_end_date','goods_img','spec','point'
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);
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const STATUS = 0; //商品是否删除，0未删除
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/**
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* 获取关联到产品的分类
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*/
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public function goodstype()
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{
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return $this->belongsTo(GoodsType::class, 'typeid', 'id');
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}
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//获取列表
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public static function getList(array $param)
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{
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extract($param); //参数：limit，offset
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$where = '';
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$limit = isset($limit) ? $limit : 10;
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$offset = isset($offset) ? $offset : 0;
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$model = new Goods;
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if(isset($typeid)){$where['typeid'] = $typeid;}
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if(isset($tuijian)){$where['tuijian'] = $tuijian;}
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if(isset($status)){$where['status'] = $status;}else{$where['status'] = self::STATUS;}
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if($where !== '')
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{
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$model = $model->where($where);
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}
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if(isset($keyword)){$model = $model->where("title", "like", "%$keyword%")->orWhere("sn", "like", "%$keyword%");} //关键词搜索
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if(isset($max_price) && isset($min_price)){$model = $model->where("price", ">=", $min_price)->where("price", "<=", $max_price);} //价格区间搜索
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$res['count'] = $model->count();
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$res['list'] = array();
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//排序
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if(isset($orderby))
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{
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switch ($orderby)
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{
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case 1:
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$model = $model->orderBy('sale','desc'); //销量从高到低
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break;
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case 2:
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$model = $model->orderBy('comments','desc'); //评论从高到低
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break;
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case 3:
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$model = $model->orderBy('price','desc'); //价格从高到低
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break;
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case 4:
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$model = $model->orderBy('price','asc'); //价格从低到高
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break;
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default:
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$model = $model->orderBy('pubdate','desc'); //价格从低到高
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}
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}
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if($res['count']>0)
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{
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$res['list'] = $model->select(self::$common_field)->skip($offset)->take($limit)->orderBy('id','desc')->get();
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if($res['list'])
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{
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foreach($res['list'] as $k=>$v)
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{
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$res['list'][$k]->goods_detail_url = route('weixin_goods_detail',array('id'=>$v->id));
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}
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}
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}
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return $res;
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}
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public static function getOne(array $param)
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{
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extract($param);
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$model = new Goods;
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$where['id'] = $id;
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if(isset($where)){$model = $model->where($where);}
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if(isset($field)){$model = $model->select($field);}
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$goods = $model->first();
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if($goods)
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{
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$goods['goods_detail_url'] = route('weixin_goods_detail',array('id'=>$goods->id));
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$goods['price'] = self::get_final_price($id);
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}
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return $goods;
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}
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public static function add(array $data)
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{
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if ($id = self::insertGetId($data))
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{
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return $id;
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}
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return false;
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}
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public static function modify($where, array $data)
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{
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if (self::where($where)->update($data))
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{
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return true;
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}
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return false;
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}
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//删除一条记录
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public static function remove($id)
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{
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if (!self::whereIn('id', explode(',', $id))->delete())
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{
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return false;
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}
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return true;
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}
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/**
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* 取得商品最终使用价格
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*
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* @param string $goods_id 商品编号
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* @param string $goods_num 购买数量
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*
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* @return 商品最终购买价格
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*/
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public static function get_final_price($goods_id)
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{
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$final_price = '0'; //商品最终购买价格
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$promote_price = '0'; //商品促销价格
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$user_price = '0'; //商品会员价格，预留
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//取得商品促销价格列表
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$goods = Goods::where('id',$goods_id)->where('status',0)->first(['promote_price','promote_start_date','promote_end_date','price']);
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$final_price = $goods->price;
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// 计算商品的促销价格
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if ($goods->promote_price > 0)
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{
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$promote_price = self::bargain_price($goods->promote_price, $goods->promote_start_date, $goods->promote_end_date);
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}
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else
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{
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$promote_price = 0;
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}
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if ($promote_price != 0)
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{
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$final_price = $promote_price;
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}
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//返回商品最终购买价格
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return $final_price;
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}
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/**
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* 判断某个商品是否正在特价促销期
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*
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* @access public
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* @param float $price 促销价格
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* @param string $start 促销开始日期
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* @param string $end 促销结束日期
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* @return float 如果还在促销期则返回促销价，否则返回0
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*/
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public static function bargain_price($price, $start, $end)
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{
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if ($price <= 0)
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{
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return 0;
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}
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else
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{
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$time = time();
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if ($time >= $start && $time <= $end)
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{
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return $price;
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}
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else
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{
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return 0;
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}
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}
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}
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//获取商品详情
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public static function goodsDetail(array $param)
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{
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extract($param); //参数：limit，offset
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$model = new Goods;
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if(isset($id)){$where['id'] = $id;}
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if(isset($where))
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{
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$model = $model->where($where);
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}
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else
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{
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return false;
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}
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$res = $model->first();
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if($res)
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{
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$where2['comment_type'] = Comment::GOODS_COMMENT_TYPE;
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$where2['status'] = Comment::SHOW_COMMENT;
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$where2['id_value'] = $id;
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$res->goods_comments_num = Comment::where($where2)->count();
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}
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return $res;
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}
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//增加或减少商品库存
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public static function changeGoodsStock(array $param)
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{
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extract($param);
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if(isset($type))
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{
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//增加库存
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DB::table('goods')->where(array('id'=>$goods_id))->increment('goods_number', $goods_number);
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}
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else
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{
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//减少库存
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DB::table('goods')->where(array('id'=>$goods_id))->decrement('goods_number', $goods_number);
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}
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}
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}
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