def create():
if request.method == 'POST':
title = request.form['title']
author = request.form['author']
publish_year = request.form['publish_year']
error = None
if not title:
error = 'Title is required.'
if not author:
error = 'Author is required.'
if not publish_year:
error = 'Publish Year is required.'
if error is not None:
flash(error)
else:
db = get_db()
db.execute(
'INSERT INTO books (title, author, publish_year)'
' VALUES (?, ?, ?)', (title, author, publish_year))
db.commit()
return redirect(url_for('books.index'))
return render_template('books/create.html')
def load_logged_in_user():
user_id = session.get('user_id')
if user_id is None:
g.user = None
else:
g.user = get_db().execute('SELECT * FROM user WHERE id = ?',
(user_id, )).fetchone()
def index():
"""Show all the posts, most recent first."""
db = get_db()
books = db.execute(
'SELECT id, title, author, publisher, publish_year FROM books'
).fetchall()
# books = [
# {'title': 'The Collapsing Empire', 'author': 'John Scalzi', 'published': '2017'},
# {'title': "Mote in God's Eye", 'author': 'Larry Niven', 'published': '1998'},
# {'title': 'Red Moon', 'author': 'Kim Stanley Robinson', 'published': '2018'},
# {'title': 'The Consuming Fire', 'author': 'John Scalzi', 'published': '2018'}
# ]
return render_template('books/index.html', books=books)
def login():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
db = get_db()
error = None
user = db.execute('SELECT * FROM user WHERE username = ?',
(username, )).fetchone()
if user is None:
error = 'Incorrect username.'
elif not check_password_hash(user['password'], password):
error = 'Incorrect password.'
if error is None:
session.clear()
session['user_id'] = user['id']
return redirect(url_for('index'))
flash(error)
return render_template('auth/login.html')
def register():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
db = get_db()
error = None
if not username:
error = 'Username is required.'
elif not password:
error = 'Password is required.'
elif db.execute('SELECT id FROM user WHERE username = ?',
(username, )).fetchone() is not None:
error = 'User {} is already registered.'.format(username)
if error is None:
db.execute('INSERT INTO user (username, password) VALUES (?, ?)',
(username, generate_password_hash(password)))
db.commit()
return redirect(url_for('auth.login'))
flash(error)
return render_template('auth/register.html')