![](/img/trans.png)
[英]How to redirect user to a different path on the same domain with a click of a button in express?
[英]Express APP how to redirect user to /:id path from server side
我正在學習 Node.js 並且發現將用戶重定向到 an:id 路徑時遇到了一些麻煩。 我想在那里打印他的用戶名。 因此,為了進行概述,它是一個登錄頁面,其中包含我要求輸入別名和 email 的表單。 當用戶單擊提交時,我想將他移動到 /:id 路徑以打印其用戶名。 我的代碼如下:
var express = require("express"),
app = express(),
request = require("request"),
mongoose = require("mongoose"),
bodyParser = require("body-parser");
app.set("view engine", "ejs")
app.use(express.static("public"));
app.use(bodyParser.urlencoded({extended: true}));
mongoose.connect("mongodb://localhost/Scape_Room", {useNewUrlParser: true, useUnifiedTopology: true});
var userSchema = new mongoose.Schema({
email: String,
alias: String,
});
var user = mongoose.model ("user",userSchema);
app.get("/", function(req, res){
res.render("index")
})
app.post("/newuser", function(req,res){
var name = req.body.name;
var email = req.body.email;
var newUser = {name:name, email:email}
user.create(newUser, function(err,newlyUser){
if(err){
console.log(err)
} else {
res.redirect("/start/:id")
}
})
})
app.get("/start/:id", function(req,res){
user.findById(req.params.id, function(err, foundUser){
if(err){
console.log(err)
} else{
res.render("startPoint", {user:foundUser})
}
})
})
app.listen(3000, function(err){
console.log("Server listening")
})
錯誤如下: { CastError: Cast to ObjectId failed for value ":id" at path "_id" for model "user"
我嘗試過: - 將路徑更改為:_id - 將 start/ 添加到路由中
當你使用redirect()
方法時,你必須傳遞一個真實的路由 url 而不是一個 id。
使用 node.js 最佳實踐完成代碼。
const express = require("express")
const request = require("request");
const mongoose = require("mongoose");
const bodyParser = require("body-parser");
const app = express();
app.set("view engine", "ejs")
app.use(express.static("public"));
app.use(bodyParser.urlencoded({ extended: true }));
mongoose.connect("mongodb://localhost/Scape_Room", { useNewUrlParser: true, useUnifiedTopology: true });
const userSchema = new mongoose.Schema({
email: String,
alias: String,
});
const user = mongoose.model("user", userSchema);
app.get("/", function (req, res) {
res.render("index");
});
app.post("/newuser", function (req, res) {
const { name, email } = req.body;
if (!name || !email) {
// here you must handle missing req.body. lets log console for now
console.log("Name - Email missing!");
return res.end();
}
const newUser = { name: name, email: email }
user.create(newUser, function (err, newlyUser) {
if (err) {
console.log(err);
return res.end();
}
if (!newlyUser) {
console.log("Couldn't save user!");
return res.end();
}
if (!newlyUser.id) {
console.log("No user id found");
return res.end();
}
res.redirect(`/start/${newlyUser.id}`);
});
});
app.get("/start/:id", function (req, res) {
user.findById(req.params.id, function (err, user) {
if (err) {
console.log(err);
} else {
res.render("startPoint", { user });
}
})
})
app.listen(3000, function (err) {
console.log("Server listening")
});
使用類似下面的東西
app.post("/newuser", function(req,res){
var name = req.body.name;
var email = req.body.email;
var newUser = {name:name, email:email}
user.create(newUser, function(err,newlyUser){
if(err){
console.log(err)
} else {
res.redirect(`/start/${newlyUser._id}`)
}
})
})
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.