def index():
"""Show all the props, most recent first."""
db = get_db()
props = db.execute('SELECT p.id, ppin, body, created, author_id, username'
' FROM tprops p JOIN tuser u ON p.author_id = u.id'
' ORDER BY created DESC').fetchall()
return render_template('props/index.html', props=props)
def register():
"""Register a new user.
Validates that the username is not already taken. Hashes the
password for security.
"""
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 tuser WHERE username = ?',
(username, )).fetchone() is not None:
error = 'User {0} is already registered.'.format(username)
if error is None:
# the name is available, store it in the database and go to
# the login page
db.execute('INSERT INTO tuser (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 load_logged_in_user():
"""If a user id is stored in the session, load the user object from
the database into ``g.user``."""
user_id = session.get('user_id')
if user_id is None:
g.user = None
else:
g.user = get_db().execute('SELECT * FROM tuser WHERE id = ?',
(user_id, )).fetchone()
def delete(id):
"""Delete a prop.
Ensures that the prop exists and that the logged in user is the
author of the prop.
"""
get_prop(id)
db = get_db()
db.execute('DELETE FROM tprops WHERE id = ?', (id, ))
db.commit()
return redirect(url_for('props.index'))
def create():
"""Create a new prop for the current user."""
if request.method == 'POST':
ppin = request.form['ppin']
body = request.form['body']
error = None
if not ppin:
error = 'PIN is required.'
if error is not None:
flash(error)
else:
db = get_db()
db.execute(
'INSERT INTO tprops (ppin, body, author_id)'
' VALUES (?, ?, ?)', (ppin, body, g.user['id']))
db.commit()
return redirect(url_for('props.index'))
return render_template('props/create.html')
def update(id):
"""Update a prop if the current user is the author."""
prop = get_prop(id)
if request.method == 'POST':
ppin = request.form['ppin']
body = request.form['body']
error = None
if not ppin:
error = 'PIN is required.'
if error is not None:
flash(error)
else:
db = get_db()
db.execute('UPDATE tprops SET ppin = ?, body = ? WHERE id = ?',
(ppin, body, id))
db.commit()
return redirect(url_for('props.index'))
return render_template('props/update.html', prop=prop)
def get_prop(id, check_author=True):
"""Get a prop and its author by id.
Checks that the id exists and optionally that the current user is
the author.
:param id: id of prop to get
:param check_author: require the current user to be the author
:return: the prop with author information
:raise 404: if a prop with the given id doesn't exist
:raise 403: if the current user isn't the author
"""
prop = get_db().execute(
'SELECT p.id, ppin, body, created, author_id, username'
' FROM tprops p JOIN tuser u ON p.author_id = u.id'
' WHERE p.id = ?', (id, )).fetchone()
if prop is None:
abort(404, "Prop id {0} doesn't exist.".format(id))
if check_author and prop['author_id'] != g.user['id']:
abort(403)
return prop
def login():
"""Log in a registered user by adding the user id to the session."""
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
db = get_db()
error = None
user = db.execute('SELECT * FROM tuser 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:
# store the user id in a new session and return to the index
session.clear()
session['user_id'] = user['id']
return redirect(url_for('index'))
flash(error)
return render_template('auth/login.html')