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Python Build a Social Network with Flask Broadcasting Lunch Order Form

Simon Leslie
Simon Leslie
23,690 Points

Broadcasting LunchOrder Challenge issue

I'm having some difficulty with this challenge. I cannot tell what is wrong with my code and the default ('Bummer! Try again!') error message is not very helpful. Can anyone help me with this?

forms.py
from flask_wtf import Form
from wtforms import StringField, PasswordField, TextAreaField, DateField
from wtforms.validators import DataRequired, Email, Length


class SignUpInForm(Form):
    email = StringField(validators=[DataRequired(), Email()])
    password = PasswordField(validators=[DataRequired(), Length(min=8)])

class LunchOrderForm(Form):
    order = TextAreaField(validators=[DataRequired()])
    date = DateField(validators=[DataRequired()])
lunch.py
from flask import Flask, g, render_template, flash, redirect, url_for
from flask.ext.bcrypt import check_password_hash
from flask.ext.login import LoginManager, login_user, current_user, login_required, logout_user

import forms
import models

app = Flask(__name__)
app.secret_key = 'this is our super secret key. do not share it with anyone!'
login_manager = LoginManager()
login_manager.init_app(app)
login_manager.login_view = 'login'


@login_manager.user_loader
def load_user(userid):
    try:
        return models.User.select().where(
            models.User.id == int(userid)
        ).get()
    except models.DoesNotExist:
        return None


@app.before_request
def before_request():
    g.db = models.DATABASE
    g.db.connect()
    g.user = current_user


@app.after_request
def after_request(response):
    g.db.close()
    return response


@app.route('/register', methods=('GET', 'POST'))
def register():
    form = forms.SignUpInForm()
    if form.validate_on_submit():
        models.User.new(
            email=form.email.data,
            password=form.password.data
        )
        flash("Thanks for registering!") 
    return render_template('register.html', form=form)

@app.route('/order', methods=('GET', 'POST'))
def order_lunch():
    form = forms.LunchOrderForm()
    if form.validate_on_submit():
        models.LunchOrder.new(
            order=form.order.data,
            date=form.date.data,
            user=g.user
        )
    return render_template('lunch.html', form=form)

@app.route('/login', methods=('GET', 'POST'))
def login():
    form = forms.SignUpInForm()
    if form.validate_on_submit():
        try:
            user = models.User.get(
                models.User.email == form.email.data
            )
            if check_password_hash(user.password, form.password.data):
                login_user(user)
                flash("You're now logged in!")
            else:
                flash("No user with that email/password combo")
        except models.DoesNotExist:
              flash("No user with that email/password combo")
    return render_template('register.html', form=form)

@app.route('/secret')
@login_required
def secret():
    return "I should only be visible to logged-in users"

@app.route('/logout')
def logout():
    logout_user()
    return redirect(url_for('login'))


@app.route('/')
def index():
    return render_template('index.html')
Simon Leslie
Simon Leslie
23,690 Points

I've figured it out. Two issues:

  1. I was trying to call the class method "new" rather than "create". (To be fair, it would have helped if we could actually see models.py to be able to read the code for LunchOrder class.)
  2. I was not calling _get_current_object() on g.user.

1 Answer

Vittorio Somaschini
Vittorio Somaschini
33,371 Points

Hello Simon.

Let's see if I can help you a little. I see two problems with your code and they are both inside here:

@app.route('/order', methods=('GET', 'POST'))
def order_lunch():
    form = forms.LunchOrderForm()
    if form.validate_on_submit():
        models.LunchOrder.new(
            order=form.order.data,
            date=form.date.data,
            user=g.user
        )
    return render_template('lunch.html', form=form)

When creating a new LunchOrder instance, you need to use create and not new like you did.

The other problem is in the line you wrote to set the user to the current user; you will probably want to have another look at the video and add a missing piece of code to that line.

The rest looks ok to me.

Vittorio