为什么我的passport.js策略没有将用户保存在正确的数据库集中？

Question

我目前在护照上使用两种Google策略来对“学生”用户和“教师”用户进行身份验证。

注意：这两个用户具有单独的猫鼬模型，因此数据库中的单独集合。

我遇到的问题是，当将教师用户凭据保存到数据库时，它将保存到学生集合中，而不是mongodb中的教师集合中。

关于此问题的怪异之处在于，如果我注释掉或删除“学生”策略而仅使“教师”策略可用，它将保存到正确的集合（教师集合）中。仅当两种策略均可用时，它们才默认为学生集合。我可以得出结论，在任一路由上触发身份验证时，它都会自动引用最高级的策略。我需要有关如何解决此问题的建议。

Passport.js

passport.use(
  "student",
  new GoogleStrategy(
    {
      //options for the google strategy
    },
    (accessToken, refreshToken, profile, done) => {
     /Check if user already exist in Db
      Student.findOne({ googleId: profile.id }).then(currentUser => {
        if (currentUser) {
          //already have user
          done(null, currentUser);
          console.log(`${currentUser} is signed in`);
        } else {
          //create new user
          new Student({
            username: profile.username,
            name: profile.displayName,
            googleId: profile.id
          })
            .save()
            .then(newUser => {
              done(null, newUser);
              console.log(`${newUser} was just created`);
            });
        }
      });
    }
  )
);

passport.use(
  "teacher",
  new GoogleStrategy(
    {
      //options for the google strategy
    },
    (accessToken, refreshToken, profile, done) => {
      //Check if user already exist in Db
      Teacher.findOne({ googleId: profile.id }).then(currentTeacher => {
        if (currentTeacher) {
          //already have user
          done(null, currentTeacher);
          console.log(`${currentTeacher} is signed in`);
        } else {
          //create new user
          new Teacher({
            username: profile.username,
            name: profile.displayName,
            googleId: profile.id
          })
            .save()
            .then(newTeacher => {
              done(null, newTeacher);
              console.log(`${newTeacher} was just created`);
            });
        }
      });
    }
  )
);

authTeacher.js

//auth with teacher strategy
router.get(
  "/teachergoogle",
  passport.authenticate("teacher", {
    scope: ["profile"]
  })
);

//callback route for google after authorization
router.get(
  "/google/redirect",
  passport.authenticate("teacher"),
  isTeacher,
  (req, res) => {
    res.send("this is teacher");
  }
);

//Logout
router.get("/logout", (req, res) => {
  req.logout();
  res.redirect("http://localhost:8080/");
});

module.exports = router;

* authStudent.js

router.get(
  "/studentgoogle",
  passport.authenticate("student", {
    scope: ["profile"]
  })
);

router.get(
  "/google/redirect",
  passport.authenticate("teacher"),
  isStudent,
  (req, res) => {
    res.send("this is teacher");
  }
);

router.get("/logout", (req, res) => {
  req.logout();
  res.redirect("http://localhost:8080/");
});

module.exports = router;