class Teacher(db.Model):
__tablename__ = 'teacher'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
username = db.Column(db.String(50), nullable=False, unique=True)
password = db.Column(db.String(60), nullable=False)
fname = db.Column(db.String(25), default='No Name')
lname = db.Column(db.String(25), default='No Name')
public_id = db.Column(db.String(100), unique=True)
students = db.relationship('Student',
backref='teacher',
lazy=True,
cascade='all, delete-orphan') # or instructor
courses = db.relationship('Course',
backref='teacher',
lazy=True,
cascade='all, delete-orphan')
experiments = db.relationship('Experiment',
backref='teacher',
lazy=True,
cascade='all, delete-orphan')
assigned_assignments = db.relationship('Assignment',
backref='teacher',
lazy=True,
cascade='all, delete-orphan')
devices = db.relationship('Device', backref='teacher',
lazy=True) # do not cascade
def __repr__(self):
return f'<Teacher("{self.username}", "{self.public_id}")>'
class Observation(db.Model):
__tablename__ = 'observation'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
title = db.Column(db.String(50), nullable=False)
type = db.Column(db.String(30), nullable=False)
description = db.Column(db.Text, nullable=False)
units = db.Column(db.String(30), nullable=False)
updated = db.Column(db.Date, nullable=False, default=datetime.date.today)
public_id = db.Column(db.String(100),
unique=True,
default=str(uuid.uuid4()))
experiment_id = db.Column(db.Integer,
db.ForeignKey('experiment.id'),
nullable=False)
student_collaborators = db.relationship('Student',
secondary=collaborators,
lazy='subquery',
backref=db.backref('observations',
lazy=True))
observation_responses = db.relationship('ObservationResponse',
backref='observation',
lazy=True)
class Experiment(db.Model):
__tablename__ = 'experiment'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
title = db.Column(db.String(80), nullable=False)
description = db.Column(db.Text, nullable=False)
plant = db.Column(db.String(50), nullable=False)
start_date = db.Column(db.Date,
nullable=False,
default=datetime.date.today)
public_id = db.Column(db.String(100),
unique=True,
default=str(uuid.uuid4()))
teacher_id = db.Column(db.Integer,
db.ForeignKey('teacher.id'),
nullable=False)
device_id = db.Column(db.Integer,
db.ForeignKey('device.id'),
nullable=False)
observations = db.relationship('Observation',
backref='experiment',
lazy=True,
cascade='all, delete-orphan')
# students = db.relationship('Student', backref = 'experiment', lazy = False)
def __repr__(self):
return f'<Experiment("{self.title}", "{self.start_date}", "{self.public_id}", "{self.students[:4]}")>'
class Course(db.Model):
__tablename__ = 'course'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
name = db.Column(db.String(100), nullable=False)
public_id = db.Column(db.String(100),
unique=True,
default=str(uuid.uuid4()))
teacher_id = db.Column(db.Integer,
db.ForeignKey('teacher.id'),
nullable=False)
students = db.relationship(
'Student', backref='course',
lazy=True) #, cascade = 'all, delete-orphan') ask if cascade
def __repr__(self):
return f'<Course("{self.name}", "{self.public_id}", "{self.students[:4]}")>'
class Device(db.Model):
__tablename__ = "device"
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
name = db.Column(db.String(50), nullable=False)
public_id = db.Column(db.String(100),
unique=True,
default=str(uuid.uuid4()))
teacher_id = db.Column(db.Integer,
db.ForeignKey('teacher.id')) # can be null
experiments = db.relationship('Experiment',
backref='device',
lazy=True,
cascade='all, delete-orphan')
def __repr__(self):
return f'<Device("{self.name}")>'
class Student(db.Model):
__tablename__ = 'student'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
username = db.Column(db.String(50), nullable=False, unique=True) #edit
password = db.Column(db.String(60), nullable=False)
fname = db.Column(db.String(25), default='No Name')
lname = db.Column(db.String(25), default='No Name')
public_id = db.Column(db.String(100),
unique=True,
default=str(uuid.uuid4()))
teacher_id = db.Column(db.Integer,
db.ForeignKey('teacher.id'),
nullable=False)
course_id = db.Column(
db.Integer,
db.ForeignKey('course.id')) #, nullable = False) # uncomment later
# experiment_id = db.Column(db.Integer, db.ForeignKey('experiment.id')) #, nullable = False) # ask
assignments = db.relationship('Assignment',
secondary=student_assignments,
lazy='subquery',
backref=db.backref('students', lazy=True))
assignment_responses = db.relationship('AssignmentResponse',
backref='student',
lazy=True,
cascade='all, delete-orphan')
observation_responses = db.relationship('ObservationResponse',
backref='student',
lazy=True,
cascade='all, delete-orphan')
experiments = db.relationship('Experiment',
secondary=student_experiments,
lazy='subquery',
backref=db.backref('students', lazy=True))
# experiments = db.relationship('Experiment', backref = )
def __repr__(self):
return f'<Student("{self.username}", "{self.fname}", "{self.public_id}")>'
class ObservationResponse(db.Model):
__tablename__ = 'observation_response'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
response = db.Column(db.Text)
submitted = db.Column(db.Date, nullable=True)
editable = db.Column(db.Boolean, nullable=False, default=True)
public_id = db.Column(db.String(100),
unique=True,
default=str(uuid.uuid4()))
student_id = db.Column(db.Integer, db.ForeignKey('student.id'))
observation_id = db.Column(db.Integer,
db.ForeignKey('observation.id'),
nullable=False)
class Assignment(db.Model):
__tablename__ = 'assignment'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
title = db.Column(db.String(100), nullable=False)
description = db.Column(db.Text, nullable=False)
type = db.Column(db.String(50), nullable=False)
due_date = db.Column(db.Date, nullable=False, default=datetime.date.today)
public_id = db.Column(db.String(100),
unique=True,
default=str(uuid.uuid4()))
teacher_id = db.Column(db.Integer,
db.ForeignKey('teacher.id'),
nullable=False)
responses = db.relationship('AssignmentResponse',
backref='assignment',
lazy=True,
cascade='all, delete-orphan')
# TODO: test many-to-many works
def __repr__(self):
return f'<Assignment("{self.title}", "{self.type}", "{self.public_id}", "{self.teacher.username}")>'
class AssignmentResponse(db.Model):
__tablename__ = 'assignment_responses'
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
response = db.Column(db.Text, default='')
submitted = db.Column(db.Date)
comments = db.Column(db.Text, default='')
public_id = db.Column(db.String(100),
unique=True,
default=str(uuid.uuid4()))
student_id = db.Column(db.Integer,
db.ForeignKey('student.id'),
nullable=False)
assignment_id = db.Column(db.Integer,
db.ForeignKey('assignment.id'),
nullable=False)
def __repr__(self):
return f'<AssignmentResponse("{self.response}", "{self.student.username}", "{self.public_id}")>'