Mongojs&Express - 无法通过id删除

Question

我试图删除基于ID的记录.我通过get动词发送ID并从req.params.id获取它.我的代码不起作用.我究竟做错了什么？

//delete user
router.get('/deleteuser/:id', function(req, res){
    var db = req.db;
    db.users.remove({'_id':req.params.id}, function(err, docs) {
        if (err) return err;
        res.send(docs); // see results
    });
});

我意识到我需要在req.params.id之前添加"ObjectId".但是,连接不起作用.到目前为止我有这个.还有另一种方式:

//delete user
router.get('/deleteuser/:id', function(req, res){
    var db = req.db;
    var objId = 'ObjectId("' + req.params.id + '")';
    console.log(objId);
    db.users.remove({"_id": objId}, function(err, docs) {
  //db.users.remove({"_id": ObjectId("4d512b45cc9374271b02ec4f")});  works in mongo console
        if (err) return err;
        console.log(docs);
        res.send(docs);
    });
});

这有效:

// db.ObjectId(req.params.id)

router.get('/deleteuser/:id', function(req, res){
    var db = req.db;
    db.users.remove({"_id": db.ObjectId(req.params.id)}, function(err, docs) {  //db.users.remove({"_id": ObjectId("4d512b45cc9374271b02ec4f")});
        if (err) return err;
        console.log(docs);
        res.send(docs);
    });
});

Answer 1

我用它来访问它:

db.ObjectId(req.params.id)