获得“object Promise”作为响应,而不是正确的值

这个 questionController 下面假设处理一个 /question 路径并返回响应。我目前只是在测试与数据库的连接,从而返回一个硬编码的值。

但是,在客户端收到的值不是的值 q 但是以下内容:

[
  {
    "message": "[object Promise]"
  }
]

我做错了什么?

问题.js

const mongoUtils = require('../mongoUtils');
var db ;

var Question = require('../schema/question')

async function getQuestion(){
  var q = null;
  try {
    //const db = dbClient.db("Questions");
    console.log(`db in getQuestion ${db}`);
    const areaCollection = await db.collection("Area");
    console.log(`area collection is ${areaCollection}`);
    q = Question({
      description: "some description",
      hints: ["hint1", "hint2"],
      topic: 'area'
    });
  } catch(exception) {
    console.log(`something bad happened in dbconnect: ${exception}`);
  } finally {
    console.log(`question object : ${JSON.stringify(q)}`);
    
  }
  return q
  
}

exports.questionController = function (req, res) {
  db = mongoUtils.getDb();
  console.log(`db in question is ${db}`);
  console.log(`connected to database ${db.databaseName}`);
    
  var question = getQuestion();
  console.log('question page');
  //var response = res.json([{"message": `${question}`}]);
  var response = [{"message": `${question}`}];
  console.log(`returning response: ${JSON.stringify(response)}`)
  return res.json(response);
}