Tacocat Challenge

Question

I'm getting "Bummer! Try again!" error when I run my code for the Tacocat Challenge. I don't know what I'm doing wrong. Here's the code below:

code for tacocat.py:

import datetime

from flask.ext.bcrypt import generate_password_hash
from flask.ext.login import UserMixin

from peewee import *


DATABASE = SqliteDatabase('tacocat.db')


class User(UserMixin, Model):
    """A taco cat customer"""
    username = CharField(unique=True)
    email = CharField(unique=True)
    password = CharField(max_length=100)
    is_admin = BooleanField(default=False)

    class Meta:
        database = DATABASE

    @classmethod
    def create_user(cls, username, email, password, admin=False):
        try:
            with DATABASE.transaction():
                cls.create(
                    username=username,
                    email=email,
                    password=generate_password_hash(password),
                    is_admin=admin)
        except IntegrityError:
            raise ValueError("User already exists")


class Taco(Model):
    """Taco creation by the customer"""
    timestamp = DateTimeField(default=datetime.datetime.now)
    user = ForeignKeyField(
        rel_model=User,
        related_name='tacos'
    )
    protein = CharField(max_length=100)
    cheese = BooleanField()
    shell = CharField(max_length=100)
    extras = TextField()

    class Meta:
        database = DATABASE
        order_by = ('-timestamp',)


def initialize():
    DATABASE.connect()
    DATABASE.create_tables([User, Taco], safe=True)
    DATABASE.close()

#code for forms.py

from flask_wtf import Form
from wtforms import StringField, PasswordField, TextAreaField, BooleanField
from wtforms.validators import (DataRequired, Regexp, ValidationError, Email,
                                Length, EqualTo)

from models import User

def name_exists(form, field):
    """Register fails because it is a username that already exists in the database"""
    if User.select().where(User.username == field.data).exists():
        raise ValidationError('User with that name already exists.')


def email_exists(form, field):
    """Register fails because it is an email that already exists in the database"""
    if User.select().where(User.email == field.data).exists():
        raise ValidationError('User with that email already exists.')


class RegisterForm(Form):
    """Creates a form to register a new user"""
    username = StringField(
        'Username',
        validators=[
            DataRequired(),
            Regexp(
                r'^[a-zA-Z0-9_]+$',
                message=("Username should be one word, letters, "
                         "numbers, and underscores only.")
            ),
            name_exists
        ])
    email = StringField(
        'Email',
        validators=[
            DataRequired(),
            Email(),
            email_exists
        ])
    password = PasswordField(
        'Password',
        validators=[
            DataRequired(),
            Length(min=2),
            EqualTo('password2', message='Passwords must match')
        ])
    password2 = PasswordField(
        'ConfirmPassword',
        validators=[DataRequired()]
    )


class LoginForm(Form):
    """Creates a form to log a user in"""
    email = StringField('Email', validators=[DataRequired(), Email()])
    password = PasswordField('Password', validators=[DataRequired()])


class TacoForm(Form):
    """Creates a form to order a taco"""
    protein = StringField("Meat? Chicken? Pork? Veggie?", validator=[DataRequired()])
    cheese = BooleanField("Cheese", default=True)
    shell = StringField("Corn? Wheat? Crispy? Soft?", validator=[DataRequired()])
    extras = TextAreaField("Anything else?", validator=[DataRequired()])

#code for models.py

import datetime

from flask.ext.bcrypt import generate_password_hash
from flask.ext.login import UserMixin

from peewee import *


DATABASE = SqliteDatabase('tacocat.db')


class User(UserMixin, Model):
    """A taco cat customer"""
    username = CharField(unique=True)
    email = CharField(unique=True)
    password = CharField(max_length=100)
    is_admin = BooleanField(default=False)

    class Meta:
        database = DATABASE

    @classmethod
    def create_user(cls, username, email, password, admin=False):
        try:
            with DATABASE.transaction():
                cls.create(
                    username=username,
                    email=email,
                    password=generate_password_hash(password),
                    is_admin=admin)
        except IntegrityError:
            raise ValueError("User already exists")


class Taco(Model):
    """Taco creation by the customer"""
    timestamp = DateTimeField(default=datetime.datetime.now)
    user = ForeignKeyField(
        rel_model=User,
        related_name='tacos'
    )
    protein = CharField(max_length=100)
    cheese = BooleanField()
    shell = CharField(max_length=100)
    extras = TextField()

    class Meta:
        database = DATABASE
        order_by = ('-timestamp')


def initialize():
    DATABASE.connect()
    DATABASE.create_tables([User, Taco], safe=True)
    DATABASE.close()

Answer 1 · 2015-11-21T16:30:52Z

November 21, 2015 4:30pm

This is a relatively complex challenge (compared to other one's on the website), here's a sample tacocat.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, logout_user, login_required, current_user

import forms
import models

app = Flask(__name__)
app.secret_key = 'auoesh.bouoastuh.43,uoausoehuosth3ououea.auoub!'

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.get(models.User.id == userid)
    except models.DoesNotExist:
        return None

@app.before_request
def before_request():
    """Connect to the database before each request."""
    g.user = current_user

@app.route('/login', methods=('GET', 'POST'))
def login():
    form = forms.LoginForm()
    if form.validate_on_submit():
        try:
            user = models.User.get(models.User.email == form.email.data)
        except models.DoesNotExist:
            flash("Your email or password doesn't match!", "error")
        else:
            if check_password_hash(user.password, form.password.data):
                login_user(user)
                flash("You've been logged in!", "success")
                return redirect(url_for('index'))
            else:
                flash("Your email or password doesn't match!", "error")
    return 'add a new taco<br>log out'

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

@app.route('/register', methods=('GET', 'POST'))
def register():
    form = forms.RegisterForm()
    if form.validate_on_submit():
        flash("Yay, you registered!", "success")
        models.User.create_user(
            username=form.username.data,
            email=form.email.data,
            password=form.password.data
        )
        return redirect(url_for('index'))
    return redirect(url_for('index'))

@app.route('/')
def index():
    return 'add a new taco<br>no tacos yet<br>sign up<br>log in<br>log out'

@app.route('/taco', methods=('GET', 'POST'))
def taco():
    form = forms.TacoForm()
    if form.validate_on_submit():
        flash("Yay, you registered!", "success")
        models.Taco.create_taco(
            protein=form.protein.data,
            shell=form.shell.data,
            extras=form.extras.data,
            user=g.user.id
        )
        return redirect(url_for('index'))
    return redirect(url_for('index'))

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MUZ141110 Bryan Bera

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Tacocat Challenge

code for tacocat.py:

Chris Freeman

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Chris Freeman

Chris Freeman

1 Answer

Chris Adamson

Chris Adamson