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Start your free trialMUZ140170 Privilege Mudzinge
4,346 PointsLunch count. Why is this code not passing, please help!
I have had a challenge with this and followed some previous threads. I noticed that I cant use parentheses on followers and following since they are properties. However, even after removing the parentheses I cant get it to pass
import datetime
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('/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')
@app.route('/order', methods=('GET', 'POST'))
def order_lunch():
form = forms.LunchOrderForm()
if form.validate_on_submit():
models.LunchOrder.create(
user=g.user._get_current_object(),
date=form.date.data,
order=form.order.data.strip()
)
return render_template('lunch.html', form=form)
@app.route('/today')
@login_required
def today():
order = models.LunchOrder.select().where(
models.LunchOrder.date == datetime.date.today() &
models.LunchOrder.user == g.user._get_current_object()
).get()
return render_template('today.html', order=order)
@app.route('/cancel_order/<int:order_id>')
@login_required
def cancel_order(order_id):
try:
order = models.LunchOrder.select().where(
id=order_id,
user=g.user._get_current_object()
).get()
except models.DoesNotExist:
pass
else:
order.delete_instance()
return redirect(url_for('index'))
@app.route('/follow/<int:user_id>')
@login_required
def follow(user_id):
try:
user = models.User.get(
models.User.id == user_id
)
models.Relationship.create(
from_user=g.user._get_current_object(),
to_user=user
)
except (models.DoesNotExist, models.IntegrityError):
pass
return redirect(url_for('index'))
@app.route('/unfollow/<int:user_id>')
@login_required
def unfollow(user_id):
try:
user = models.User.get(
models.User.id == user_id
)
models.Relationship.get(
models.Relationship.from_user==g.user._get_current_object(),
models.Relationship.to_user==user
).delete_instance()
except (models.DoesNotExist, models.IntegrityError):
pass
return redirect(url_for('index'))
@app.route('/profile/<int:user_id>')
def profile(user_id):
user = models.User.select().where(
models.User.id == user_id
).get()
return render_template('profile.html', user=user)
import datetime
from flask.ext.bcrypt import generate_password_hash
from flask.ext.login import UserMixin
from peewee import *
DATABASE = SqliteDatabase(':memory:')
class User(UserMixin, Model):
email = CharField(unique=True)
password = CharField(max_length=100)
join_date = DateTimeField(default=datetime.datetime.now)
bio = CharField(default='')
class Meta:
database = DATABASE
@property
def following(self):
return (
User
.select()
.join(Relationship, on=Relationship.to_user)
.where(Relationship.from_user == self)
)
@property
def followers(self):
return (
User
.select()
.join(Relationship, on=Relationship.from_user)
.where(Relationship.to_user == self)
)
@classmethod
def new(cls, email, password):
cls.create(
email=email,
password=generate_password_hash(password)
)
class LunchOrder(Model):
order = TextField()
date = DateField()
user = ForeignKeyField(User, related_name="orders")
class Relationship(Model):
from_user = ForeignKeyField(User, related_name="relationships")
to_user = ForeignKeyField(User, related_name="related_to")
created_at = DateTimeField(default=datetime.datetime.now)
class Meta:
database = DATABASE
indexes = (
(('from_user', 'to_user'), True),
)
def initialize():
DATABASE.connect()
DATABASE.create_tables([User, LunchOrder], safe=True)
DATABASE.close()
{% extends "layout.html" %}
{% from "macro.html" import hide_email %}
{% block content %}
<h1>{{ hide_email(user) }}</h1>
<dl>
<dt>Lunches:</dt>
<dd><!-- total # of lunches ordered -->{{ user.orders().count() }}</dd>
<dt>Followers:</dt>
<dd><!-- # of followers. user.followers is a queryset of followers -->{{ user.followers.count()</dd>
<dt>Following:</dt>
<dd><!-- # of users followed. user.following is a queryset of users followed -->{{ user.following.count() </dd>
</dl>
{% endblock %}
4 Answers
Guled Ahmed
12,806 PointsYour following and followers count code is correct. Take a closer look at the total number of lunches ordered piece of code. What helped me solved this particular problem was going through the documentation on Foreign Keys (Scroll down to the header named 'Foreign Keys'), I highly recommend going through it. The documentation will clear things up. I hope this helped. :)
Daniel Muchiri
15,407 PointsIn Build a Social Network with Flask, Kenneth Love uses parenthesis in counting posts and followers. However, for the lunch count challenge you need to remove them. Why is this?
This passes:
<dd><!-- total # of lunches ordered -->{{ user.orders.count() }}</dd>
<dd><!-- # of followers. user.followers is a queryset of followers -->{{ user.followers.count() }}</dd>
<dd><!-- # of users followed. user.following is a queryset of users followed -->{{ user.following.count() }}</dd>
Basel Barzanji
Python Web Development Techdegree Graduate 20,706 PointsI think the need to include parentheses in the lessons is because followers and following are functions but 'orders' in this challenge and 'posts' in lesson are class attributes not class functions
MUZ140170 Privilege Mudzinge
4,346 PointsThanks Guled. It passed , I had to remove parentheses on orders.