护照注销（）错误：对于模型“somemodel（不是用户模型）”的路径“_id”处的值“注销”，转换为 ObjectId 失败

Posted 2023-03-11

【中文标题】护照注销（）错误：对于模型“somemodel（不是用户模型）”的路径“_id”处的值“注销”，转换为 ObjectId 失败

【英文标题】：passport logout() error: Cast to ObjectId failed for value "logout" at path "_id" for model "somemodel(not the user model)"

【发布时间】：2019-03-27 13:24:07

【问题描述】：

我是一个业余编码爱好者，我通常可以通过大量搜索来解决错误，但我无法正确解决这个问题。

当我点击注销路线时，它会引发错误：Cast to ObjectId failed for value "logout" at path "_id" for model "Spot"

我尝试了 mongoose 版本 4.7.2，它不工作。我无法想象为什么它将我的注销路线与现场模型相关联。

我的 app.js

    var express             = require("express"),
    bodyParser          = require("body-parser"),
    mongoose            = require("mongoose"),
    passport            = require("passport"),
    passportFacebook    = require("passport-facebook").Strategy,
    User                = require("./models/user.js"),
    Spot                = require("./models/spot.js");

mongoose.connect("mongodb://localhost/biketrialspots",  useNewUrlParser: true );

var app = express();
app.set("view engine","ejs");
app.use(bodyParser.urlencoded(extended:true));
app.use(express.static('public'));
app.use(require("express-session")(
    secret: "some secret",
    resave: false,
    saveUninitialized: false
));
app.use(passport.initialize());
app.use(passport.session());

app.use(function(req, res, next)
   res.locals.currentUser = req.user;
   next();
);

passport.use(new passportFacebook(
    clientID: "some id",
    clientSecret: "some secret",
    callbackURL: "somewebsite/auth/facebook/callback",
    profileFields: ['id', 'displayName', 'picture.type(large)']
, function(accessToken, refreshToken, profile, done) 

        User.findOrCreate(profile, function(err, user) 

             if (err) 
                 return done(err); 

            done(null, user);

        );
    
));

passport.serializeUser(function(user, done) 
    done(null, user._id);
);

passport.deserializeUser(function(id, done) 
    User.findById(id, function(err, user) 
        done(err, user);
    );
);

app.get("/", function(req, res)
    Spot.find(, function(err, spots)
        if(err)
            console.log(err);
         else
            res.render("index", spots:spots);
        
    );
);

app.get("/new", ensureAuthenticated, function(req, res)
    res.render("new");
);

app.post("/", function(req, res)
    Spot.create(req.body.spot, function(err, result)
        if(err)
            console.log(err);
         else
            res.redirect("/");
        
    );
);

app.get("/:id", function(req, res)
    Spot.findById(req.params.id, function(err, spot)
        if(err)
            console.log(err);
         else
            res.render("spot", spot: spot);
        
    );
);

// Redirect the user to Facebook for authentication.  When complete,
// Facebook will redirect the user back to the application at
//     /auth/facebook/callback
app.get('/auth/facebook', passport.authenticate('facebook'));

// Facebook will redirect the user to this URL after approval.  Finish the
// authentication process by attempting to obtain an access token.  If
// access was granted, the user will be logged in.  Otherwise,
// authentication has failed.
app.get('/auth/facebook/callback',
  passport.authenticate('facebook',  successRedirect: '/',
                                      failureRedirect: '/login' ));

app.get("/logout", function(req, res)

    req.user.logout();
        res.redirect('/'); 


);

function ensureAuthenticated(req, res, next) 
    if (req.isAuthenticated())  return next(); 
    return res.redirect('/');


app.listen(process.env.PORT, process.env.IP, function(req, res)
    console.log("APP HAS STARTED!!!!!");
);

用户模型

var mongoose = require("mongoose");

var userSchema = new mongoose.Schema(
    facebookID:Number,
    username:String,
    photo:String
);

userSchema.statics.findOrCreate = function findOrCreate(profile, cb)
    var userObj = new this();
    this.findOne(facebookID : profile.id,function(err,result) 
        if(!result)
            userObj.facebookID = profile.id;
            userObj.username = profile.displayName;
            userObj.photo = profile.photos[0].value;
            userObj.save(cb);
         else
            cb(err,result);
        
    );
;

module.exports = mongoose.model("User", userSchema);

谢谢

【参考方案1】：

因为app.get("/:id", ...)在你的代码中写在app.get("/logout", ...)之前，我猜/:id的请求处理程序会在你得到/logout时被调用。然后，req.params.id 变为"logout" 并由Spot.findById() 抛出错误。

尝试在app.get("/:id", ...) 之前写app.get("/logout", ...) 怎么样？