ارور در ارسال پست

evry node app
│
├── پوشه config
│   ├── فایل default.json
│   ├── فایل development.json
│   └── فایل development.json
│
├── پوشه src
│   ├── پوشه models
│   │   └──  فایل user.js
│   └── پوشه routs
│        ├── پوشه auth
│        │   ├── فایل controller.js
│        │   ├── فایل index.js
│        │   └──  فایل validator.js
│        ├── فایل controller.js
│        └──  فایل index.js
│
├── فایل index.js
├── فایل package-lock.json
└── فایل package.json

دوستان در بالا پوشه بندی پروژه من را داری می بینی. و حالا موارد درون هر فایل را می گذارم.

فایل index.js:
const express = require('express');

const app = express();
app.use(express.json());

const mongoose = require('mongoose');
const config = require('config');
const router = require('./src/routs');

app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use(express.static('public'));

mongoose
  .connect(config.get('db.address'))
  .then(() => console.log('connected to mongodb'))
  .catch((err) => console.log('could not connect to mongodb',err));

app.use('/api', router);

const port = process.env.PORT || 5000;
app.listen(5000, ()=> console.log(`listening on port ${port}`));

فایل package.json:
{
  "name": "evry-node-app",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node index"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
"auto-bind": "^5.0.1",
"bcrypt": "^5.1.1",
"config": "^3.3.9",
"express": "^4.18.2",
"express-validator": "^7.0.1",
"lodash": "^4.17.21",
"mongoose": "^7.4.4",
"mongoose-timestamp": "^0.6.0"
  }
}

فایل config\default.json:
{
  "name": "evry node app",
  "db": {
"address": "mongodb://127.0.0.1:27017/test"
  }
}

فایل config\development.json:
{
  "name": "evry node app - dev"
}

فایل config\production.json:
{
  "name": "evry node app - production"
}

فایل src\models\user.js:
const mongoose = require('mongoose');
const timestamp = require('mongoose-timestamp');

const userSchema = new mongoose.Schema({
  email: {type: String, required: true, unique:true},
  name: {type: String, required: true},
  password: {type: String, required: true},
  admin: {type: Boolean, default: false},
})
userSchema.plugin(timestamp);

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

فایل src\routs\controller.js:
const {validationResult} = require('express-validator')
const User = require('./../models/user');

module.exports = class {
  constructor(){
this.User = User;
  }
  validatonBody(req,res){
const result = validationResult(req);
if(!result.isEmpty()){
  const errors = result.array();
  const massege = [];
  errors.forEach(err => massege.push(err.msg));
  res.status(400).json({
    massege: 'validaton error',
    data: massege
  })
  return false;
}
return true;
  }

  validate(req,res,next){
if(!this.validatonBody(req,res)){
  return;
}
next();
  }

  response({res , massege , code=200 , data={}}){
res.status(code).json({
  massege,
  data
})
  }
}

فایل src\routs\index.js:
const express = require('express');
const router = express.Router();
const authRouter = require('./auth');

router.use('/auth' , authRouter);

module.exports = router; 

فایل src\routs\auth\controller.js:
const controller = require('./../controller')
const _ = require('lodash');
const bcrypt = require('bcrypt');

module.exports = new (class extends controller {
  async register(req,res){
let user = await this.User.findOne({email: req.body.email});
if(user){
  return this.response({
    res, code: 400, massege: 'this user is registered'
  });
}
user = new this.User(_.pick(req.body, ["name", "email", "password"]));

const solt = await bcrypt.genSalt(10);
user.password = await bcrypt.hash(user.password, solt);

await user.save();

this.response({
  res, massege: "the user registered",
  data: _.pick(user, ["_id", "name", "email"])
})
  }
  async login(req,res){
res.send('login');
this.User;
  }
})();

فایل src\routs\auth\index.js:
const express = require('express');
const router = express.Router();
const controller = require('./controller');
const validator = require('./validator')

router.post(
  '/register',
  validator.registerValidator(),
  controller.validate,
  controller.register.bind(this)
)

router.post(
  '/login',
  validator.loginValidator(),
  controller.validate,
  controller.login.bind(this)
)

module.exports=router;

فایل src\routs\auth\validator.js:
const expressValidator = require('express-validator');
const check = expressValidator.check;

module.exports = new class {
  registerValidator(){
return[
  check('email')
    .isEmail()
    .withMessage('email id invalid')
    .not()
    .isEmpty()
    .withMessage('email cant be empety'),
    check('name')
      .not()
      .isEmpty()
      .withMessage('name cant be empety'),
    check('password')
      .not()
      .isEmpty()
      .withMessage('password cant be empety'),
  ]
  }
  loginValidator(){
return[
  check('email')
    .isEmail()
    .withMessage('email id invalid')
    .not()
    .isEmpty()
    .withMessage('email cant be empety'),
    check('password')
      .not()
      .isEmpty()
      .withMessage('password cant be empety'),
  ]
  }
}

حالا تو تمام محتوا پروژه من را داری. حالا بگو چرا زمانی که آن را اجرا می کنم به درستی اجرا می شود ولی زمانی که به این آدرس "http://localhost:5000/api/auth/register" درخواست POST می فرستم و محتوا body را به صورت زیر وارد میکنم:

{  
"email": "rouzbeh@gmail.com",  
"name": "rouzbeh",  
"password": "1234"  
}

ارور زیر را می دهد

TypeError: Cannot read properties of undefined (reading 'validatonBody')  
at validate (C:\\Users\\rayanastore\\Desktop\\evry node app\\src\\routs\\controller.js:24:14)  
at Layer.handle \[as handlerequest\] (C:\\Users\\rayanastore\\Desktop\\evry node app\\nodemodules\\express\\lib\\router\\layer.js:95:5)  
at next (C:\\Users\\rayanastore\\Desktop\\evry node app\\nodemodules\\express\\lib\\router\\route.js:144:13)  
at middleware (C:\\Users\\rayanastore\\Desktop\\evry node app\\nodemodules\\express-validator\\src\\middlewares\\check.js:16:13)  
at process.processTicksAndRejections (node:internal/process/taskqueues:95:5)