def register():
msg = ''
if request.method == 'POST':
username = request.form['login_name']
password = request.form['login_pwd']
db = get_db()
error = None
if not username:
msg = 'Username is required.'
elif not password:
msg = 'Password is required.'
elif db.execute('SELECT id FROM user WHERE username = ?',
(username, )).fetchone() is not None:
msg = '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 render_template('auth/register.html', msg=msg)
msg = '注册成功'
flash(error)
return render_template('auth/register.html', msg=msg)
def login():
if request.method == "GET":
return render_template('auth/login.html')
req = request.values
login_name = req['login_name'] if 'login_name' in req else ''
login_pwd = req['login_pwd'] if 'login_pwd' in req else ''
if login_name is None or len(login_name) < 1:
msg = '请输入用户名'
return render_template('auth/login.html', msg=msg)
if login_pwd is None or len(login_pwd) < 1:
msg = '请输入密码'
return render_template('auth/login.html', msg=msg)
db = get_db()
user = db.execute('SELECT * FROM user WHERE username = ?',
(login_name, )).fetchone()
if user is None:
msg = '用户名与密码错误！'
elif not check_password_hash(user['password'], login_pwd):
msg = '用户名与密码错误！'
return render_template('auth/login.html', msg=msg)
return redirect(url_for('center.index'))
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 get_post(id, check_author=True):
post = get_db().execute(
'SELECT p.id, title, body, created, author_id, username'
' FROM post p JOIN user u ON p.author_id = u.id'
' WHERE p.id = ?', (id, )).fetchone()
if post is None:
abort(404, "Post id {0} doesn't exist.".format(id))
if check_author and post['author_id'] != g.user['id']:
abort(403)
return post
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_db()
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_db()
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 delete(id):
get_post(id)
db = get_db()
db.execute('DELETE FROM post WHERE id = ?', (id, ))
db.commit()
return redirect(url_for('blog.index'))
def blog():
db = get_db()
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)