res.render拋出錯誤的node.js

Question

我一直試圖讓這個博客，當涉及到渲染它拋出一個頁面，「Res.Render不是一個函數...」

let express = require("express"), 
    app = express(), 
    bodyParser = require("body-parser"), 
    methodOV = require("method-override"), 
    mongoose = require("mongoose"), 
    passport = require("passport"), 
    pL = require("passport-local"), 
    pLM = require("passport-local-mongoose"), 
    User = require("./user.js"); 

mongoose.connect("mongodb://localhost/max"); 

let maxBlog = new mongoose.Schema({ 
    title: String, 
    author: String, 
    content: String 
}); 

let Blog = mongoose.model('Blog', maxBlog); 

app.use(express.static("public")); 

app.use(bodyParser.urlencoded({ extended: false })) 

app.use(bodyParser.json()); 

app.use(methodOV("_method")); 

app.set('view engine', 'ejs'); 

//AUTH 

app.use(passport.initialize()); 
app.use(passport.session()); 

passport.use(new pL(User.authenticate())); 
passport.serializeUser(User.serializeUser()); 
passport.deserializeUser(User.deserializeUser()); 

app.post("/register", (req, res) =>{ 
    User.register(new User({username: req.body.username}), req.body.password, function(err, user){ 
     if(err){ 
      console.log(err); 
      return res.render('register'); 
     } 
     passport.authenticate("local")(req, res, function(){ 
      res.redirect("/secret"); 
     }); 
    }); 
}); 

// LOGIN ROUTES 
app.get("/login", (req, res) =>{ 
    res.render("login"); 
}); 
//login logic 
app.post("/login", passport.authenticate("local", { 
    successRedirect: "/secret", 
    failureRedirect: "/login" 
}) ,(req, res) =>{ 
}); 

app.get("/logout", (req, res) => { 
    req.logout(); 
    res.redirect("/"); 
}); 


const isLoggedIn = (req, res, next) =>{ 
    if(req.isAuthenticated()){ 
     return next(); 
    } else { 
     res.redirect("/login"); 
    } 
}; 

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// 

app.get("/", (req,res) => { 
    res.redirect("/home"); 
}); 

app.get("/home", (req,res) => { 
    res.render("index"); 
}); 

app.get("/blog", (req,res) => { 
    Blog.find({},(err,res) => { 
     if (err){ 
      res.send("An unexpected error occured. Please try again later."); 
     } else { 
      res.render("blog",{blogs:res}); 
     } 
    }); 
}); 

app.post("/blog",isLoggedIn,(req,res) => { 
    Blog.create({ 
     title: req.body.t, 
     author: req.body.a, 
     content: req.body.c 
    }), (err,create) => { 
     if (err){ 
      res.send("There was an error. Try again later."); 
     } else { 
      res.render("blogs"); 
     } 
    }; 
}); 

app.get("/blog:id",(req,res) => { 
    Blog.findById(req.params.id,(err,find) => { 
     if (err){ 
      res.send("An error occured. Please try again later."); 
     } else { 
      res.render("show",{blog:find}); 
     } 
    }); 
}); 

app.put("/blogs:id",isLoggedIn,(req,res) => { 
    Blog.findByIdAndUpdate(req.params.id,({ 
     content: req.body.c, 
     author: req.body.a 
    }),(err,update) => { 
     if (err){ 
      res.send("An error occured. Please try again later."); 
     } else { 
      res.redirect("/blogs"+req.params.id); 
     } 
    }); 
}); 

app.listen(8080); 

請幫忙！謝謝，本很長時間以來一直困擾着我。這很奇怪，所有的解決方案都沒有奏效。不幸的是，我嘗試了很多東西，沒有任何工作。非常感謝。

Answer 1

這是由於參數定義問題。

您可以嘗試改變第一函數參數的名稱response：

app.get("/blog", (req,response) => { 
    Blog.find({},(err,res) => { 
     if (err){ 
      response.send("An unexpected error occured. Please try again later."); 
     } else { 
      response.render("blog",{blogs:res}); 
     } 
    }); 
});