class Role(db.Model):
__tablename__ = "roles"
id = db.Column(db.Integer(), primary_key=True)
name = db.Column(db.String(32), unique=True)
def __repr__(self):
return f"{self.name}"
class UserRoles(db.Model):
__tablename__ = "user_roles"
id = db.Column(db.Integer(), primary_key=True)
user_id = db.Column(db.Integer(),
db.ForeignKey("users.id", ondelete="CASCADE"))
role_id = db.Column(db.Integer(),
db.ForeignKey("roles.id", ondelete="CASCADE"))
class Student(Person):
__tablename__ = "student"
__searchable__ = ["serial_number", "firstname", "surname"]
id = db.Column(db.Integer, primary_key=True)
parent_guardian_name = db.Column(db.String(128))
classroom_id = db.Column(db.Integer,
db.ForeignKey("classroom.id"),
nullable=False)
def display_classroom_symbol(self):
classroom = Classroom.query.get(self.classroom_id)
return classroom.classroom_symbol
def get_total_students_in_class(self):
classroom = Classroom.query.get(self.classroom_id)
return classroom.total_students_in_classroom()
@staticmethod
def get_total_students_by_gender(gender):
students = db.session.query(db.func.count(Student.gender))\
.filter_by(gender=gender).all()
return students[0][0]
@staticmethod
def get_gender_total_in_class(gender, class_id):
students = db.session.query(db.func.count(Student.gender))\
.filter_by(gender=gender, classroom_id=class_id).all()
return students[0][0]
class Subject(db.Model):
__tablename__ = "subjects"
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(128), unique=True, index=True)
code = db.Column(db.String(16), unique=True, index=True)
def __repr__(self):
return f"Subject: {self.name}"
class Admin(UserMixin, db.Model):
__tablename__ = "admin"
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(64), index=True, unique=True)
password_hash = db.Column(db.String(128))
role = db.Column(db.String(20))
def __repr__(self):
return f"<Admin: {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)
class Sessions(db.Model):
__tablename__ = "sessions"
id = db.Column(db.Integer, primary_key=True)
session = db.Column(db.String(16), unique=True, index=True, nullable=False)
current_session = db.Column(db.Boolean,
nullable=False,
server_default='false')
def __repr__(self):
return f"Session: {self.session}"
def set_as_current_session(self, session_id):
# first check if a session is already set
old_session = Sessions.query.filter_by(current_session=True).first()
new_session = Sessions.query.get(session_id)
if old_session:
old_session.current_session = False
new_session.current_session = True
elif old_session is None:
new_session.current_session = True
class Classroom(db.Model):
__tablename__ = "classroom"
id = db.Column(db.Integer, primary_key=True)
classroom_name = db.Column(db.String(128), nullable=False)
classroom_symbol = db.Column(db.String(8), nullable=False, unique=True)
students = db.relationship("Student", backref="classroom", lazy="dynamic")
def __repr__(self):
return f"Classroom: {self.classroom_symbol}"
def total_students_in_classroom(self):
students_list = [student for student in self.students]
total_students = len(students_list)
return total_students
@staticmethod
def list_classrooms():
return Classroom.query.order_by(Classroom.classroom_symbol).all()
@staticmethod
def get_classroom_id_from_symbol(classroom_symbol):
classroom = Classroom.query.filter_by(
classroom_symbol=classroom_symbol).first()
return classroom.id
class User(SearchableMixin, db.Model, UserMixin):
__tablename__ = "users"
__searchable__ = ["username", "email"]
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(64), index=True, unique=True)
email = db.Column(db.String(128), index=True, unique=True)
password_hash = db.Column(db.String(128))
is_active = db.Column(db.Boolean, nullable=False, server_default="t")
role = db.relationship("Role", secondary="user_roles", uselist=False)
image_file_name = db.Column(db.String(128))
def __repr__(self):
return f"User: {self.username}"
def set_password_hash(self, password):
self.password_hash = generate_password_hash(password)
def check_password(self, password):
return check_password_hash(self.password_hash, password)
def get_user_avatar(self, size):
return avatar(self.email, size)
def get_reset_password_token(self, expires_in=3600):
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 Exception:
return
return User.query.get(id)
class StudentResults(db.Model):
__tablename__ = "student_results"
id = db.Column(db.Integer, primary_key=True)
student_id = db.Column(db.Integer,
db.ForeignKey("student.id"),
nullable=False)
classroom_id = db.Column(db.Integer,
db.ForeignKey("classroom.id"),
nullable=False)
subject_id = db.Column(db.Integer,
db.ForeignKey("subjects.id"),
nullable=False)
term = db.Column(db.String(32), nullable=False)
sessions_id = db.Column(db.Integer,
db.ForeignKey("sessions.id"),
nullable=False)
ca_score = db.Column(db.Integer, nullable=False)
exam_score = db.Column(db.Integer, nullable=False)
total_score = db.Column(db.Integer)
grade = db.Column(db.String(8))
grade_remark = db.Column(db.String(32))
def set_total_score(self, ca_score, exam_score):
return ca_score + exam_score
def set_grade_and_remark(self, total_score):
if total_score >= 80 <= 90:
grade = "A"
grade_remark = "EXCELLENT"
elif total_score > 90:
grade = "A+"
grade_remark = "DISTINCTION"
elif total_score >= 75 <= 79:
grade = "B+"
grade_remark = "VERY GOOD"
elif total_score >= 70 <= 74:
grade = "B"
grade_remark = "GOOD"
elif total_score >= 65 <= 69:
grade = "C+"
grade_remark = "CREDIT"
elif total_score >= 55 <= 64:
grade = "C"
grade_remark = "CREDIT"
elif total_score >= 50 <= 54:
grade = "C-"
grade_remark = "CREDIT"
elif total_score >= 45 <= 49:
grade = "D"
grade_remark = "PASS"
elif total_score >= 40 <= 44:
grade = "E"
grade_remark = "PASS"
else:
grade = "F"
grade_remark = "FAIL"
return grade, grade_remark
@staticmethod
def calculate_subject_average_score_in_class(subject_id, classroom_id,
term, sessions_id):
subject_score_average = db.session.query(
db.func.avg(StudentResults.total_score)).filter_by(
subject_id=subject_id,
classroom_id=classroom_id,
term=term,
sessions_id=sessions_id).all()
# return the first element of the tuple
return f"{subject_score_average[0][0]:6.2f}"
@staticmethod
def calculate_score_position_in_subject(subject_id, classroom_id, term,
sessions_id, student_total_score):
subject_total_scores_query = db.session.query(
StudentResults.total_score).filter_by(
subject_id=subject_id,
classroom_id=classroom_id,
term=term,
sessions_id=sessions_id).order_by(
db.desc(StudentResults.total_score)).all()
# convert query to list of scores
subject_total_scores = [x[0] for x in subject_total_scores_query]
student_score_index = subject_total_scores.index(student_total_score)
pos_engine = inflect.engine()
return pos_engine.ordinal(student_score_index + 1)
class Staff(Person):
__tablename__ = "staff"
__searchable__ = ["serial_number", "firstname", "surname"]
id = db.Column(db.Integer, primary_key=True)
class Person(SearchableMixin, db.Model):
__abstract__ = True
id = db.Column(db.Integer, primary_key=True)
serial_number = db.Column(db.String(32), nullable=False, unique=True)
firstname = db.Column(db.String(64), nullable=False)
middlename = db.Column(db.String(64))
surname = db.Column(db.String(64), nullable=False)
gender = db.Column(db.String(16))
birthday = db.Column(db.DateTime)
contact_number = db.Column(db.String(128))
email = db.Column(db.String(128))
address = db.Column(db.String(200))
image_file_name = db.Column(db.String(128))
def __repr__(self):
return f"{self.firstname} {self.surname}"
def get_person_avatar(self, size):
return avatar(self.email, size)
def format_birthday(self):
formatted_birthday = self.birthday.strftime("%d %B %Y")
return formatted_birthday
def calculate_age(self):
current_date = datetime.now().utcnow()
age_in_days = abs(current_date - self.birthday)
return int(age_in_days.days / 365)
