如何每天启用一次Express.post路由

Question

我有一个express.js应用程序，允许用户发布行为。我想将这些帖子每天限制为一个。从服务器端开始，仅当当前用户尚未在同一天发布Act时，我才想更改发布路由。在当前路线（如下所示）中，我正在尝试将上午00:00的当前日期与用户的上一个法令的created_at日期进行比较。如果created_at> = start_of_current_date，则该帖子不会发生。但是，将记录created_at，但在条件中返回undefined。

这是我的路线：

// POST new Act route 
router.post('/', auth.required, async (req, res, next) => {
  const now = new Date();
  // return last created Act
  result = await Act
    .query()
    .where('users_id', req.user.id)
    .orderBy('created_at', 'desc')
    .limit(1);

  console.log('this is the last act of user ', req.user.id, ': ', result);
  console.log('this is the created_at last act of user ', req.user.id, ': ', result.created_at);
  console.log('this is the start of today ', req.user.id, ': ', now.setHours(0,0,0,0));

  // conditional to disable if last Act.created_at == Today
  if(result.created_at >= now.setHours(0,0,0,0)) {
    return Act.query()
    .insert({
      deed: req.body.act.deed,
      users_id: req.body.act.userId
    }) 
    .then( function () {
      res.json({ success: true, message: 'ok' });     // respond back to request
    })
  } else {
    res.json ({
      "message": "This user already acted today."
    });
  }
});

这是控制台中的结果，包括我的控制台日志：

[nodemon] restarting due to changes...
[nodemon] starting `node server.js`
Running on localhost:8000
this is the last act of user  1 :  [ Act {
    id: 6,
    deed: 'Writing',
    users_id: 1,
    created_at: 2019-09-23T20:04:28.393Z,
    updated_at: 2019-09-23T20:04:28.393Z } ]
this is the created_at last act of user  1 :  undefined
this is the start of today  1 :  1569902400000

更新：结果返回一个数组，因此使用result [0]，我可以获取一个值。 h / e，需要转换输出以将其与当前日期进行比较。这是当前输出：

[nodemon] restarting due to changes...
[nodemon] starting `node server.js`
Running on localhost:8000
this is the last act of user  1 :  [ Act {
    id: 6,
    deed: 'Writing',
    users_id: 1,
    created_at: 2019-09-23T20:04:28.393Z,
    updated_at: 2019-09-23T20:04:28.393Z } ]
this is the date of the last act of user  1 :  2019-09-23T20:04:28.393Z
this is the start of today  1 :  1569902400000

Answer 1

这可以使用getTime（）帮助程序：

// POST new act route 
router.post('/', auth.required, async (req, res, next) => {
  const now = new Date();
  // return last created Act
  result = await Act
    .query()
    .where('users_id', req.user.id)
    .orderBy('created_at', 'desc')
    .limit(1);

  console.log('this is the last act of user ', req.user.id, ': ', result);
  console.log('this is the date of the last act of user ', req.user.id, ': ', result[0].created_at.getTime());
  console.log('this is the start of today ', req.user.id, ': ', now.setHours(0,0,0,0));

  // conditional to disable if last Act.created_at == Today
  if(result[0].created_at.getTime() <= now.setHours(0,0,0,0)) {
    return Act.query()
    .insert({
      deed: req.body.act.deed,
      users_id: req.body.act.userId
    }) 
    .then( function () {
      res.json({ success: true, message: 'ok' });     // respond back to request
    })
  } else {
    res.json ({
      "message": "This user already acted today."
    });
  }
});