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install npm dependencies

npm install

USEFUL NPM DEPENDENCIES

MONGOOSE - database helper for MongoDB

npm install --save mongoose mongod // starts the daemon mongo // check out the documents

var User = mongoose.model('User', UserSchema); module.exports = User; // in app.js var User = require('../models/user');

BCRYPT - used for hashing and salting

npm install --save bcrypt

// in User.js var bcrypt = require('bcrypt'); UserSchema.pre('save', function(next) { var user = this; bcrypt.hash(user.password, 10, function(err, hash) { if (err) { return next(err); } user.password = hash; next(); }) }); UserSchema.statics.authenticate = function(email, password, callback) { User.findOne({ email: email }) .exec(function (error, user) { if (error) { return callback(error); } else if (!user) { var err = new Error('User not found.'); err.status = 401; return callback(err); } bcrypt.compare(password, user.password, function (error, result) { if (result === true) { return callback(null, user); } else { return callback(); } }); }); } // Example in app.js for Express router.post('/login', function(req, res, next) { if (req.body.email && req.body.password) { User.authenticate(req.body.email, req.body.password, function (error, user) { if (error || !user) { var err = new Error('Wrong email or password.'); err.status = 401; return next(err); } else { req.session.userId = user._id; return res.redirect('/profile'); } }); } else { var err = new Error('Email and password are required.'); err.status = 401; return next(err); } });

EXPRESS SESSION - save sessions to use throughout the website

npm install express-session --save

// in app.js var session = require('express-session'); // use sessions for tracking logins - check more in the readme app.use(session({ secret: 'treehouse loves you', resave: true, saveUninitialized: false })); // not useful when in production. check https://github.com/expressjs/session#compatible-session-stores

CONNECT-MONGO - used for quick middleware access to Mongo

connect-mongo is a middleware already written for us!

npm install connect-mongo --save

require MongoStore = require('connect-mongo')(session); // in app.js app.use(session({ secret: 'treehouse loves you', resave: true, saveUninitialized: false store: new MongoStore({ mongooseConnection: db }) }));

Repository

https://github.com/okeeffed/developer-notes-nextjs/content/npm/npm-cheat-sheet

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