我如何从猫鼬内部调用 req.flash() ？

Question

我在 mongoose 函数中调用 req.flash 时遇到问题。我试过点亮一切。在我的代码的一部分中，它可以工作，但在另一部分中却没有。

我的代码：

 router.post('/chngpwd', function(req, res, next) {
   var {currentpassword, newpassword, confirmnewpassword} = req.body;
   var uid = req.session.passport.user;
   if (newpassword == confirmnewpassword) {
     User.findById(uid).then(dbres => {
     req.flash('error_msg',"THIS MESSAGE DON'T WORK");  //DONT WORK
     });
   }else {
     req.flash('error_msg',"New passwords don't match"); //WORKS
   }
   res.redirect('/adminpanel/1');
});

Answer 1

您正在将其重定向至 /adminpanel/1，而无需等待 findById（异步）函数的响应。这应该有效：

router.post('/chngpwd', function(req, res, next) {
   var {currentpassword, newpassword, confirmnewpassword} = req.body;
   var uid = req.session.passport.user;
   if (newpassword == confirmnewpassword) {
     User.findById(uid).then(dbres => {
         req.flash('error_msg',"THIS MESSAGE DON'T WORK");
         res.redirect('/adminpanel/1');
     });
   }else {
     req.flash('error_msg',"New passwords don't match");
     res.redirect('/adminpanel/1');
   }
});

我如何从猫鼬内部调用 req.flash() ？

How can I call req.flash() from inside the mongoose?

node.js

express

mongoose

connect-flash