对对对

 router.get('/product/:name', controller.product.product.index);
 async find(m) {
    const db = this.app.mongodb;
    const res = await db.collection(m).find().toArray();
    return res;
  }
  for (var i = 0; i < tables.length; i++) {
            await db.collection(tables[i]).updateOne({ _id: ObjectId(id) }, { $set: { isShow: isShow, actives: actives } });
            var res = await db.collection(tables[i]).find({ _id: ObjectId(id) }).toArray();
            if (res.length) {
                try {
                    if (isShow) {
                        await db.collection('user').insertOne(res[0])
                        ctx.body = {
                            status: 200,
                            msg: "收藏成功"
                        }
                    } else {
                        await db.collection('user').deleteOne({ _id: ObjectId(id) })
                        ctx.body = {
                            status: 200,
                            msg: "取消收藏"
                        }
                    }
                } catch (err) {
                    this.app.logger.error(err);
                    ctx.body = {
                        status: 400,
                        msg: "数据库中数据已经存在,请不要重复添加"
                    }
                }
            }

const {ctx}=this
    var {id,actives} = ctx.request.body;
    const db = this.app.mongodb;
    actives=Number(actives)
    var res = await db.collection('user').find({ _id: ObjectId(id)}).toArray();
     console.log(res[0].actives);
     if(actives!=res[0].actives){
        res[0].actives=actives
        db.collection('user').update({ _id: ObjectId(id) },{$set:{actives}})
        ctx.body={
            code:200
        }
            }