"Create a user through /registration" Tacocat Challenge

from flask import (Flask, g, render_template, flash, redirect, url_for, 
                   abort, request)
from flask_bcrypt import check_password_hash
from flask_login import (LoginManager, login_user, 
                         logout_user,login_required,
                         current_user)

import forms
import models

DEBUG = True
PORT = 8000
HOST = '0.0.0.0'

app = Flask(__name__)
app.secret_key = 'dsaf4t478houajbv430t734youhf3134t7yg28$%#'

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.db = models.DATABASE
    g.db.connect()
    g.user = current_user


@app.after_request
def after_request(response):
    """Close the database connection after each request."""
    g.db.close()
    return response


@app.route('/')
def index():
    tacos = models.Taco.select().limit(100)
    return render_template('index.html', tacos=tacos)


@app.route('/registration', methods=['GET', 'POST'])
def register():
    """Register new user here."""
    form = forms.RegisterForm()
    if form.validate_on_submit():
        flash("Yay, you've registered!", "success")
        models.User.create_user(
            email=form.email.data,
            password=form.password.data
        )
        return redirect(url_for('login'))
    return render_template('register.html', form=form)


@app.route('/login', methods=['GET', 'POST'])
def login():
    """Log in user."""
    form = forms.LoginForm()
    if form.validate_on_submit():
        try:
            user = models.User.select().where(
                models.User.email == form.email.data).get()
        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 render_template('login.html', form=form)


@app.route('/logout')
@login_required
def logout():
    """Log out user."""
    logout_user()
    flash("You've been logged out!", "success")
    return redirect(url_for('index'))


@app.route('/taco', methods=['GET', 'POST'])
@login_required
def taco():
    """Create a taco."""
    form = forms.CreateTacoForm()
    if form.validate_on_submit():
        models.Taco.create(
            user=g.user._get_current_object(),
            protein=form.protein.data,
            shell=form.shell.data,
            cheese=form.cheese.data,
            extras=form.extras.data.strip()
        )
        flash("Taco has been created!", "success")
        return redirect(url_for('index'))
    return render_template('taco.html', form=form)


if __name__ == '__main__':
    models.intialize()
    try:
        models.User.create_user(
          email="brianweber2@gmail.com",
          password="surfer17",
        )
    except ValueError:
        pass

from flask_login import UserMixin
from flask_bcrypt import generate_password_hash, check_password_hash
from peewee import *


DATABASE = SqliteDatabase('tacos.db')

class User(UserMixin, Model):
    email = CharField(unique=True)
    password = CharField(max_length=100)

    class Meta:
        database = DATABASE

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


class Taco(Model):
    user = ForeignKeyField(
        rel_model=User,
        related_name='tacos'
    )
    protein = CharField()
    shell = CharField()
    cheese = BooleanField()
    extras = TextField()

    class Meta:
        database = DATABASE

    @classmethod
    def taco_creation(cls, user, protein, shell, cheese, extras):
        with DATABASE.transaction():
            cls.create(
                user=user,
                protein=protein,
                shell=shell,
                cheese=cheese,
                extras=extras
            )


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

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

from models import User


# Validator methods
def email_exists(form, field):
    if User.select().where(User.email == field.data).exists():
        raise ValidationError("User with that email already exists.")


class RegisterForm(Form):
    email = StringField(
        'Email',
        validators=[
            DataRequired(),
            Email(),
            email_exists
    ])
    password = PasswordField(
        'Password',
        validators=[
            DataRequired(),
            Length(min=5),
            EqualTo('password2', message='Passwords must match.')
    ])
    password2 = PasswordField(
        'Confirm Password',
        validators=[DataRequired()]
    )


class LoginForm(Form):
    email = StringField('Email', validators=[DataRequired(), Email()])
    password = PasswordField('Password', validators=[DataRequired()])


class CreateTacoForm(Form):
    protein = StringField('Protein', validators=[DataRequired()])
    shell = StringField('Shell', validators=[DataRequired()])
    cheese = BooleanField('Cheese?', validators=[DataRequired()])
    extras = TextAreaField('Extras', validators=[DataRequired()])