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week4_day5's Introduction

AUTH

Para la autenticación necesitamos principalmente dos apartados. La configuración de sesión que gestionará tanto las cookies en cliente como la sesión en servidor y encriptar la contraseña.

session.config

  • Para gestionar las sesiones vamos a apoyarnos en las dependencias de express-session y connect-mongo.
  • No olvidéis añadir el SESS_SECRET y el MONGODB_URI en el .env
  • La configuración básica de sesión es:
  const session = require('express-session');    
  const MongoStore = require('connect-mongo');   
  const mongoose = require('mongoose');

  module.exports = app => {
    app.set('trust proxy', 1);
    app.use(
      session({
        secret: process.env.SESS_SECRET,
        resave: true,
        saveUninitialized: false,
        cookie: {
          sameSite: process.env.NODE_ENV === 'production' ? 'none' : 'lax',
          secure: process.env.NODE_ENV === 'production',
          httpOnly: true,
          maxAge: 1000 * 60 * 60 * 24 * 7
        },
        store: MongoStore.create({ mongoUrl: process.env.MONGODB_URI })
      })
    );
  };

bcrypt

  • Para encriptar las contraseñas de usuario usaremos la dependencia bcrypt.
    const bcryptSalt = 10
    const salt = bcrypt.genSaltSync(bcryptSalt)
    
    const hashPass = bcrypt.hashSync(password, salt) //Contraseña hasheada

Modelos relacionados

Si necesitamos relacionar modelos entre sí hemos de tener presente el tipo de relación que tienen (one to one, one to many o many to many).

Si es un one to one la sintaxis del esquema sería:

  //Varios ejemplos
  author: { type: Schema.Types.ObjectId, ref: 'Author' },
  DNI: { type: Schema.Types.ObjectId, ref: 'Document' },
  bestFriend: { type: Schema.Types.ObjectId, ref: 'User' },

Si es one to many o many to many:

  //Varios ejemplos
  authors: [ { type: Schema.Types.ObjectId, ref: 'Author' } ],
  documents: [ { type: Schema.Types.ObjectId, ref: 'Document' } ],
  friends: [ { type: Schema.Types.ObjectId, ref: 'User' } ],

Populate

A la hora de realizar una búsqueda en la BD podemos popular estos campos mediante el método populate. Si quisieramos ver los amigos de un usuario podríamos hacer:

  User.findById(id)
    .populate("friends")
    .then(userWithFriendsPopulated => /*...*/)
    .catch(err => /*...*/)

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