class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(20), unique=True, nullable=False)
email = db.Column(db.String(120), unique=True, nullable=False)
password = db.Column(db.String(200), nullable=False)
def __repr__(self):
return f"User('{self.username}', '{self.email}')" #chỉ show username và email thôi
class Student(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(100), nullable=False)
date_of_birth = db.Column(db.Date, nullable=False)
classname = db.Column(db.String(30), nullable=False)
email = db.Column(db.String(120), unique=True)
def __repr__(self):
return f"User('{self.name}', '{self.date_of_birth}', '{self.email}', '{self.classname}')" #Các trường sẽ được show.
class Post(SearchableMixin, db.Model):
id = db.Column(db.Integer, primary_key=True)
body = db.Column(db.String(140))
language = db.Column(db.String(5))
timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
__searchable__ = ['body']
def __repr__(self):
return '<Post {}>'.format(self.body)
class Task(db.Model):
id = db.Column(db.String(36), primary_key=True)
name = db.Column(db.String(128), index=True)
description = db.Column(db.String(128))
user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
complete = db.Column(db.Boolean, default=False)
def get_rq_job(self):
try:
rq_job = rq.job.Job.fetch(self.id, connection=current_app.redis)
except (redis.exceptions.RedisError, rq.exceptions.NoSuchJobError):
return None
return rq_job
def get_progress(self):
job = self.get_rq_job()
return job.meta.get('progress', 0) if job is not None else 100
class Notification(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(128), index=True)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
timestamp = db.Column(db.Float, index=True, default=time)
payload_json = db.Column(db.Text)
def get_data(self):
return json.loads(str(self.payload_json))
class Message(db.Model):
id = db.Column(db.Integer, primary_key=True)
sender_id = db.Column(db.Integer, db.ForeignKey('user.id'))
recipient_id = db.Column(db.Integer, db.ForeignKey('user.id'))
body = db.Column(db.String(140))
timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow)
def __repr__(self):
return '<Message {}>'.format(self.body)
class User(PaginatedAPIMixin, UserMixin, db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(64), index=True, unique=True)
email = db.Column(db.String(120), index=True, unique=True)
password_hash = db.Column(db.String(128))
posts = db.relationship('Post', backref='author', lazy='dynamic')
about_me = db.Column(db.String(140))
last_seen = db.Column(db.DateTime, default=datetime.utcnow)
messages_sent = db.relationship('Message',
foreign_keys='Message.sender_id',
backref='author',
lazy='dynamic')
messages_received = db.relationship('Message',
foreign_keys='Message.recipient_id',
backref='recipient',
lazy='dynamic')
last_message_read_time = db.Column(db.DateTime)
notifications = db.relationship('Notification',
backref='user',
lazy='dynamic')
tasks = db.relationship('Task', backref='user', lazy='dynamic')
token = db.Column(db.String(32), index=True, unique=True)
token_expiration = db.Column(db.DateTime)
def __repr__(self):
return '<User {}>'.format(self.username)
def set_password(self, password):
self.password_hash = generate_password_hash(password)
def check_password(self, password):
return check_password_hash(self.password_hash, password)
def avatar(self, size):
digest = md5(self.email.lower().encode('utf-8')).hexdigest()
return 'https://www.gravatar.com/avatar/{}?d=retro&s={}'.format(
digest, size)
followed = db.relationship(
'User',
secondary=followers,
# followers.columns.follower_id
primaryjoin=(followers.c.follower_id == id),
# followers.columns.followed_id
secondaryjoin=(followers.c.followed_id == id),
backref=db.backref('followers', lazy='dynamic'),
lazy='dynamic')
def follow(self, user):
if not self.is_following(user):
self.followed.append(user)
def unfollow(self, user):
if self.is_following(user):
self.followed.remove(user)
def is_following(self, user):
return self.followed.filter(
followers.c.followed_id == user.id).count() > 0
def followed_posts(self):
# SELECT * FROM Post
followed = Post.query.join(
# JOIN Followers on (Followers.followed_id = Post.user_id)
followers,
(followers.c.followed_id == Post.user_id)).filter(
# WHERE Followers.follower_id = USER_ID
followers.c.follower_id == self.id)
own = Post.query.filter_by(user_id=self.id)
return followed.union(own).order_by(Post.timestamp.desc())
def get_reset_password_token(self, expires_in=600):
# Encode returns a byte sequence, so better to store in decoded string type
return jwt.encode(
{
'reset_password': self.id,
'exp': time() + expires_in
},
current_app.config['SECRET_KEY'],
algorithm='HS256').decode('utf-8')
@staticmethod
def verify_reset_password_token(token):
try:
id = jwt.decode(token,
current_app.config['SECRET_KEY'],
algorithms=['HS256'])['reset_password']
except:
return None
return User.query.get(id)
def new_messages(self):
last_read_time = self.last_message_read_time or datetime(1900, 1, 1)
return Message.query.filter_by(recipient=self).filter(
Message.timestamp > last_read_time).count()
def add_notification(self, name, data):
self.notifications.filter_by(name=name).delete()
n = Notification(name=name, payload_json=json.dumps(data), user=self)
db.session.add(n)
return n
def launch_task(self, name, description, *args, **kwargs):
rq_job = current_app.task_queue.enqueue('app_module.tasks.' + name,
self.id, *args, **kwargs)
task = Task(id=rq_job.get_id(),
name=name,
description=description,
user=self)
db.session.add(task)
return task
def get_tasks_in_progress(self):
return Task.query.filter_by(user=self, complete=False).all()
def get_task_in_progress(self, name):
return Task.query.filter_by(name=name, user=self,
complete=False).first()
def to_dict(self, include_email=False):
data = {
'id': self.id,
'username': self.username,
'last_seen': (self.last_seen.isoformat() + 'Z') if \
self.last_seen else datetime(1970, 1, 1, tzinfo=timezone.utc),
'about_me': self.about_me,
'post_count': self.posts.count(),
'follower_count': self.followers.count(),
'followed_count': self.followed.count(),
'_links': {
'self': url_for('api.get_user', id=self.id),
'followers': url_for('api.get_followers', id=self.id),
'followed': url_for('api.get_followed', id=self.id),
'avatar': self.avatar(128)
}
}
if include_email:
data['email'] = self.email
return data
def from_dict(self, data, new_user=False):
for field in ['username', 'email', 'about_me']:
if field in data:
setattr(self, field, data[field])
if new_user and 'password' in data:
self.set_password(data['password'])
def get_token(self, expires_in=3600):
now = datetime.utcnow()
if self.token and self.token_expiration > now + timedelta(seconds=60):
return self.token
self.token = base64.b64encode(os.urandom(24)).decode('utf-8')
self.token_expiration = now + timedelta(seconds=expires_in)
db.session.add(self)
return self.token
def revoke_token(self):
self.token_expiration = datetime.utcnow() - timedelta(seconds=1)
@staticmethod
def check_token(token):
user = User.query.filter_by(token=token).first()
if user is None or user.token_expiration < datetime.utcnow():
return None
return user