Express Workshop

Outline

• Setting up Express
• Parsing body requests
• What about logging?
• Using Dotenv for env vars
• Installing Mongoose
• Creating a sample model
• Writing routes for dotenv
• What about nodemon?

Snippets

Adding BodyParser

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));

Connecting to Mongoose:

mongoose.connect("mongodb://localhost/workshop", { useNewUrlParser: true });
const db = mongoose.connection;

db.on("error", console.error.bind(console, "connection error:"));
db.once("open", function() {
  // we're connected!
  console.log("Connected to MongoDB!");
});

MongoDB Model

const hackerSchema = new mongoose.Schema({
  name: { type: String, required: true },
  email: { type: String, required: true },
  school: { type: String, required: true }
});

const Hacker = new mongoose.model("Hacker", hackerSchema);

MongoDB Routes

app.get("/hackers", (req, res) => {
  Hacker.find({}, (err, hackers) => {
    res.send(hackers);
  });
});
app.post("/hackers", (req, res) => {
  const { name, email, school } = req.body;
  const newHacker = Hacker({ name, email, school });
  newHacker.save((err, obj) => {
    if (err) {
      console.error(err);
      res.status(400).send(err);
    } else {
      res.status(201).send(obj);
    }
  });
});