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 users WHERE id = ?',
(user_id, )).fetchone()
def get_card(id, check_author=True):
card = get_db().execute(
'SELECT c.id, front, back, created_at, user_id, username'
' FROM cards c JOIN users u ON c.user_id = u.id'
' WHERE c.id = ?', (id, )).fetchone()
if card is None:
abort(404, "Card id {0} doesn't exist.".format(id))
if check_author and card['user_id'] != g.user['id']:
abort(403)
return card
def create():
if request.method == 'POST':
front = request.form['front']
back = request.form['back']
error = None
if not front:
error = 'Front is required.'
if error is not None:
flash(error)
else:
db = get_db()
db.execute(
'INSERT INTO cards (front, back, user_id)'
' VALUES (?, ?, ?)', (front, back, g.user['id']))
db.commit()
return redirect(url_for('cards.index'))
return render_template('cards/create.html')
def update(id):
card = get_card(id)
if request.method == 'POST':
front = request.form['front']
back = request.form['back']
error = None
if not front:
error = 'Front is required.'
if error is not None:
flash(error)
else:
db = get_db()
db.execute('UPDATE card SET front = ?, back = ?'
' WHERE id = ?', (front, back, id))
db.commit()
return redirect(url_for('cards.index'))
return render_template('cards/update.html', card=card)
def login():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
db = get_db()
error = None
user = db.execute('SELECT * FROM users 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 users WHERE username = ?',
(username, )).fetchone() is not None:
error = 'User {} is already registered.'.format(username)
if error is None:
db.execute('INSERT INTO users (username, password) VALUES (?, ?)',
(username, generate_password_hash(password)))
db.commit()
return redirect(url_for('auth.login'))
flash(error)
return render_template('auth/register.html')
def delete(id):
get_card(id)
db = get_db()
db.execute('DELETE FROM cards WHERE id = ?', (id, ))
db.commit()
return redirect(url_for('cards.index'))
def index():
db = get_db()
cards = db.execute('SELECT * FROM cards WHERE user_id=?',
(g.user['id'])).fetchall()
return render_template('cards/index.html', cards=cards)