Question

我正在尝试根据针对MERN堆栈的教程来创建PUT路由。

型号：

const mongoose = require('mongoose');

const Schema = mongoose.Schema;

const toDoSchema = new Schema({
    //taskNum: {type: Number, required: true},
    task: {type: String, required: true},
    //progress: {type: String, required: true},
    //difficulty: {type: Number, required: true}
});

const toDo = mongoose.model("toDo", toDoSchema);

module.exports = toDo

API：

const express = require('express');
const router = express.Router();

//ToDo Model
const ToDo= require('../../models/toDo');

// @route   GET api/toDo
// @desc    GET all to dos
// @access  Public 
router.get('/', (req, res) => {
    ToDo.find()
    .sort({ taskNum: -1 })
    .then(toDo => res.json(toDo))
});

// @route   POST api/toDo
// @desc    create a new to dos
// @access  Public 
router.post('/', (req, res) => {
    const newToDo = new ToDo({
        //taskNum: req.body.taskNum,
        task: req.body.task,
        //progress: req.body.progress,
        //difficulty: req.body.difficulty
    })

    newToDo.save().then(toDo => res.json(toDo));
});

// @route   DELETE api/toDo/:id
// @desc    Delete a to do
// @access  Public 
router.delete('/:id', (req, res) => {
        ToDo.findById(req.params.id)
        .then(toDo => toDo.remove().then(() => res.json( {success: true } )))
        .catch(err => res.status(404).json( {success: false } ));
});

// @route   UPDATE api/toDo/:id
// @desc    Update a to do
// @access  Public 
router.put('/:id', (req, res) => {
        ToDo.findById(req.params.id)
        .then(toDo => toDo.set({ task: req.body.task }).then(() => res.json( {success: true } )))
        .catch(err => res.status(404).json( {success: false} ));
});


module.exports = router;

我正在测试Postman中的代码，并不断收到Cannot PUT错误消息。

Postman Error

所有其他路线都工作得很好，我只是停留在这个终点。关于我应该改变什么的任何想法？

Answer 1

确保您正在通过 body 发送数据。尝试记录 req.params.id 和 req.body.task 的值>尝试这样的事情。使用findOneAndUpdate

// @route   UPDATE api/toDo/:id
// @desc    Update a to do
// @access  Public 
router.put('/:id', (req, res) => {
    ToDo.findOneAndUpdate({ id: req.params.id }, { $set: { task: req.body.task } }, { new: true }, 
        function(err, doc) {
              if(!err){
                  res.json( {success: true } )
               }
         });
}).catch(err => res.status(404).json( {success: false} ));

从服务器接收“无法输入”

1 个答案: