screen/application/common/model/UserCoupon.php

<?php

namespace app\common\model;

use think\db\Query;
use think\Model;


class UserCoupon extends Model
{
    protected $autoWriteTimestamp=true;
    protected $updateTime=null;
    protected $append=[
        'no',
        'is_expire',
    ];
    public function bindGoods(){
        return $this->hasMany(UserCouponGoods::class,'coupon_id');
    }

    protected static function init()
    {
        self::beforeWrite(function (self $coupon){
            if($coupon['type']==2){
                unset($coupon['amount_full']);
            }
        });
    }

    public static function toUser(User $user,Coupon $coupon){
        $userCoupon=$user->coupon()->save([
            'name'=>$coupon['name'],
            'type'=>$coupon['type'],
            'amount'=>$coupon['amount'],
            'amount_full'=>$coupon['amount_full']??null,
            'time_start'=>$coupon['time_start'],
            'time_end'=>$coupon['time_end'],
        ]);
        $goods_ids=$coupon->bindGoods()->column('goods_id');
        $arr=[];
        foreach ($goods_ids as $goods_id){
            $arr[]=[
                'goods_id'=>$goods_id,
            ];
        }
        $userCoupon->bindGoods()->saveAll($arr);
    }

    public function scopeCanUse(Query $query){
        $time=date('Y-m-d H:i:s');
        $query->where('time_start','<',$time)
            ->where('is_use',0)
            ->where('time_end','>',$time);
    }

    public function needMax(){
        return $this->getAttr('type')==Coupon::T_FULL;
    }

    public function canUse($amount,$goods_id){
        $couponGoods=$this->bindGoods()->column('goods_id');
        $time=date('Y-m-d H:i:s');
        if(
            (($this['type']==Coupon::T_FULL && $amount>=$this['amount_full'])||
                ($this['type']==Coupon::T_WU && $amount>$this['amount'])) &&
            in_array($goods_id,$couponGoods) &&
            $this['is_use']==0 &&
            $this['time_start']<$time && $this['time_end']>$time
        ){
            return true;
        }
        return false;
    }

    public function setUse(){
        $this['is_use']=1;
        $this->save();
    }

    public function getNoAttr($id,$model){
        return sprintf('%03d',$model['id']);
    }

    public function getIsExpireAttr($_,$model){
        return time()>strtotime($model['time_end']);
    }
}