def index():
db = get_database()
posts = db.execute('SELECT p.id, title, body, created, author_id, username'
' FROM post p JOIN user u ON p.author_id = u.id'
' ORDER BY created DESC').fetchall()
return render_template('blog/index.html', posts=posts)
def register():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
database = get_database()
error = None
if not username:
error = 'Username is required'
elif not password:
error = 'Password is required'
elif database.execute('SELECT id FROM user WHERE username = ?',
(username, )).fetchone() is not None:
error = 'Username {} already exists.'.format(username)
if error is None:
database.execute(
'INSERT INTO user (username, password) VALUES (?, ?)',
(username, generate_password_hash(password)))
database.commit()
return redirect(url_for('auth.login'))
flash(error)
return render_template('auth/register.html')
def load_logged_in_user():
user_id = session.get('user_id')
if user_id is None:
g.user = None
else:
g.user = get_database().execute('SELECT * FROM user WHERE id = ?',
(user_id, )).fetchone()
def create():
if request.method == 'POST':
title = request.form['title']
body = request.form['body']
error = None
if not title:
error = 'Title is required'
if error is not None:
flash(error)
else:
db = get_database()
db.execute(
'INSERT INTO post (title, body, author_id)'
'VALUES (?, ?, ?)', (title, body, g.user['id']))
db.commit()
return redirect(url_for('blog.index'))
return render_template('blog/create.html')
def update(id):
post = get_post(id)
if request.method == 'POST':
title = request.form['title']
body = request.form['body']
error = None
if not title:
error = 'Title is required'
if error is not None:
flash(error)
else:
db = get_database()
db.execute('UPDATE post SET title = ?, body = ?'
' WHERE id = ?', (title, body, id))
db.commit()
return redirect(url_for('blog.index'))
return render_template('blog/update.html', post=post)
def login():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
database = get_database()
error = None
user = database.execute('SELECT * FROM user WHERE username = ?',
(username, )).fetchone()
if username 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 delete(id):
get_post(id)
database = get_database()
database.execute('DELETE FROM post WHERE id =? ', (id, ))
database.commit()
return redirect(url_for('blog.index'))