mirror of
https://codeberg.org/Mo8it/AdvLabDB.git
synced 2024-09-19 18:31:16 +00:00
675 lines
25 KiB
Python
675 lines
25 KiB
Python
"""
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See the file DB.drawio for the design of the database. It can be opened in the internet browser with the website:
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https://app.diagrams.net
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For more information about the implementation, see the part to Models in the documentation of Flask-SQLAlchemy:
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https://flask-sqlalchemy.palletsprojects.com/en/2.x/models/
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"""
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from decimal import ROUND_HALF_UP, Decimal
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from flask import flash
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from flask_security import current_user
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from flask_security.models.fsqla_v2 import FsRoleMixin, FsUserMixin
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from sqlalchemy import select
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from . import db
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from .exceptions import DataBaseException
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from .model_independent_funs import get_first
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MIN_MARK = 0
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MAX_MARK = 15
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MIN_YEAR = 22
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MAX_YEAR = 99
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MIN_STUDENT_NUMBER = 0
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MIN_EXPERIMENT_NUMBER = 1
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MIN_GROUP_NUMBER = 1
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MIN_DURATION_IN_DAYS = 1
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MIN_PART_NUMBER = 1
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def roundHalfUpToInt(number):
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return int(Decimal(number).quantize(Decimal(0), rounding=ROUND_HALF_UP))
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class Student(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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student_number = db.Column(
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db.Integer, db.CheckConstraint(f"student_number >= {MIN_STUDENT_NUMBER}"), nullable=False, unique=True
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)
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first_name = db.Column(db.String(100), nullable=False)
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last_name = db.Column(db.String(100), nullable=False)
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uni_email = db.Column(db.String(200), nullable=False, unique=True)
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contact_email = db.Column(db.String(200), nullable=True, unique=True)
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bachelor_thesis = db.Column(db.String, nullable=True)
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bachelor_thesis_work_group = db.Column(db.String, nullable=True)
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note = db.Column(db.Text, nullable=True)
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part_students = db.relationship("PartStudent", back_populates="student", lazy=True)
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def str(self):
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return f"{self.first_name} {self.last_name}"
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def __str__(self):
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return self.str()
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class PartStudent(db.Model):
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# A student doing a specific part
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id = db.Column(db.Integer, primary_key=True)
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final_part_mark = db.Column(
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db.Integer,
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db.CheckConstraint(f"final_part_mark BETWEEN {MIN_MARK} AND {MAX_MARK}"),
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nullable=True,
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)
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student_id = db.Column(db.Integer, db.ForeignKey("student.id"), nullable=False)
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student = db.relationship("Student", back_populates="part_students")
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part_id = db.Column(db.Integer, db.ForeignKey("part.id"), nullable=False)
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part = db.relationship("Part", back_populates="part_students")
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group_id = db.Column(db.Integer, db.ForeignKey("group.id"), nullable=True)
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group = db.relationship("Group", back_populates="part_students")
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experiment_marks = db.relationship("ExperimentMark", back_populates="part_student", lazy=True)
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__table_args__ = (
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db.UniqueConstraint(student_id, part_id),
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db.UniqueConstraint(student_id, group_id),
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)
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def str(self):
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return f"{self.student.str()} {self.part}"
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def __str__(self):
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return f"<{self.str()}>"
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def check(part, group):
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if group is not None and group.program != part.program:
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raise DataBaseException(
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f"Group's program {group.program} and student part's program {part.program} do not match!"
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)
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def __init__(self, student, part, group=None):
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PartStudent.check(part, group)
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super().__init__(student=student, part=part, group=group)
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def checkThenSetFinalPartMark(self):
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finalWeightingSum = 0
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finalMark = 0
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groupExperiments = []
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for experimentMark in self.experiment_marks:
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if None in (experimentMark.oral_mark, experimentMark.protocol_mark):
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# Not all marks are set!
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return
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groupExperiment = experimentMark.group_experiment
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groupExperiments.append(groupExperiment)
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semesterExperiment = groupExperiment.semester_experiment
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finalWeighting = semesterExperiment.final_weighting
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finalWeightingSum += finalWeighting
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finalMark += finalWeighting * experimentMark.final_experiment_mark
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if set(groupExperiments) != set(self.group.group_experiments):
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flash(f"{self} does not have an experiment mark for every group experiment in his group!", "warning")
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return
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oldFinalPartMark = self.final_part_mark
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try:
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self.final_part_mark = roundHalfUpToInt(finalMark / finalWeightingSum)
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db.session.commit()
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except Exception as ex:
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flash(str(ex), "error")
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db.session.rollback()
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else:
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if current_user.has_role("admin"):
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if oldFinalPartMark != self.final_part_mark:
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category = "danger" if oldFinalPartMark and oldFinalPartMark > self.final_part_mark else "info"
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flash(
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f"Final part mark changed for {self} from {oldFinalPartMark} to {self.final_part_mark}.",
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category,
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)
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else:
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flash(f"Final part mark did not change for {self} from {oldFinalPartMark}.", "warning")
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class Group(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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number = db.Column(db.Integer, db.CheckConstraint(f"number >= {MIN_GROUP_NUMBER}"), nullable=False)
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semester_id = db.Column(db.Integer, db.ForeignKey("semester.id"), nullable=False)
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semester = db.relationship("Semester", back_populates="groups")
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program_id = db.Column(db.Integer, db.ForeignKey("program.id"), nullable=False)
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program = db.relationship("Program", back_populates="groups")
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part_students = db.relationship("PartStudent", back_populates="group", lazy=True)
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group_experiments = db.relationship("GroupExperiment", back_populates="group", lazy=True)
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__table_args__ = (db.UniqueConstraint(number, semester_id, program_id),)
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def str_without_semester(self):
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return f"{self.number} {self.program.str()}"
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def str(self):
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return f"{self.str_without_semester()} {self.semester.str()}"
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def __str__(self):
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return f"<{self.str()}>"
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def check(part_students, program=None):
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commonProgram = part_students[0].part.program
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if program and program != commonProgram:
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raise DataBaseException("Group's program and students' program mismatch!")
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for partStudent in part_students[1:]:
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if partStudent.part.program != commonProgram:
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raise DataBaseException(f"Part Students {part_students} are not in the same program!")
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def customInit(part_students):
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Group.check(part_students)
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semester = part_students[0].part.semester
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program = part_students[0].part.program
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highestGroupNumber = get_first(
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select(Group.number)
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.where(Group.semester == semester, Group.program == program)
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.order_by(Group.number.desc())
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)
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if highestGroupNumber is not None:
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number = highestGroupNumber + 1
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else:
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number = 1
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return Group(
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program=program,
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number=number,
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part_students=part_students,
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semester=semester,
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)
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class GroupExperiment(db.Model):
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# An experiment specified to a group
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id = db.Column(db.Integer, primary_key=True)
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note = db.Column(db.Text, nullable=True)
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experiment_marks_missing = db.Column(db.Boolean, default=False, nullable=False)
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semester_experiment_id = db.Column(db.Integer, db.ForeignKey("semester_experiment.id"), nullable=False)
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semester_experiment = db.relationship("SemesterExperiment", back_populates="group_experiments")
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group_id = db.Column(db.Integer, db.ForeignKey("group.id"), nullable=False)
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group = db.relationship("Group", back_populates="group_experiments")
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appointments = db.relationship("Appointment", back_populates="group_experiment", lazy=True)
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experiment_marks = db.relationship("ExperimentMark", back_populates="group_experiment", lazy=True)
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__table_args__ = (db.UniqueConstraint(semester_experiment_id, group_id),)
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def str(self):
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return f"<SemExp: {self.semester_experiment.str()} | Gr: {self.group.str()}>"
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def __str__(self):
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return self.str()
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def check(semester_experiment, group):
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for partStudent in group.part_students:
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student = partStudent.student
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for partStudent in student.part_students:
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for experimentMark in partStudent.experiment_marks:
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if experimentMark.group_experiment.semester_experiment.experiment == semester_experiment.experiment:
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raise DataBaseException(
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f"{student} has already done {semester_experiment.experiment} in {partStudent.part} and had {experimentMark}!"
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)
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def __init__(self, semester_experiment, group):
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GroupExperiment.check(semester_experiment, group)
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super().__init__(semester_experiment=semester_experiment, group=group)
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for partStudent in group.part_students:
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db.session.add(ExperimentMark(part_student=partStudent, group_experiment=self))
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def update_experiment_marks_missing(self):
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for experiment_mark in self.experiment_marks:
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if experiment_mark.final_experiment_mark is None:
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self.experiment_marks_missing = False
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return
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self.experiment_marks_missing = True
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class Experiment(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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number = db.Column(db.Integer, db.CheckConstraint(f"number >= {MIN_EXPERIMENT_NUMBER}"), nullable=False)
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title = db.Column(db.String(200), nullable=False)
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description = db.Column(db.Text, nullable=True)
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wiki_link = db.Column(db.String(300), nullable=True)
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building = db.Column(db.String(100), nullable=False)
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room = db.Column(db.String(100), nullable=False)
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responsibility = db.Column(db.String(200), nullable=True)
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duration_in_days = db.Column(
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db.Integer, db.CheckConstraint(f"duration_in_days >= {MIN_DURATION_IN_DAYS}"), nullable=False
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)
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active = db.Column(db.Boolean, default=True, nullable=False)
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program_id = db.Column(db.Integer, db.ForeignKey("program.id"), nullable=False)
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program = db.relationship("Program", back_populates="experiments")
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semester_experiments = db.relationship("SemesterExperiment", back_populates="experiment", lazy=True)
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__table_args__ = (db.UniqueConstraint(number, program_id),)
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def str(self):
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return f"{self.number} {self.program.str()}"
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def __str__(self):
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return f"<{self.str()}>"
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# Helper table for the many to many relationship between Assistant and SemesterExperiment
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experiment_assistant = db.Table(
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"experiment_assistant",
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db.Column("semester_experiment_id", db.Integer, db.ForeignKey("semester_experiment.id"), primary_key=True),
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db.Column("assistant_id", db.Integer, db.ForeignKey("assistant.id"), primary_key=True),
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)
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class SemesterExperiment(db.Model):
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# An experiment in a specific semester
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id = db.Column(db.Integer, primary_key=True)
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oral_weighting = db.Column(
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db.Float,
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db.CheckConstraint("oral_weighting BETWEEN 0 AND 1"),
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default=0.5,
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nullable=False,
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)
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protocol_weighting = db.Column(
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db.Float,
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db.CheckConstraint("protocol_weighting BETWEEN 0 AND 1"),
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default=0.5,
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nullable=False,
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)
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final_weighting = db.Column(
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db.Float,
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db.CheckConstraint("final_weighting BETWEEN 0 AND 1"),
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default=1.0,
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nullable=False,
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)
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experiment_id = db.Column(db.Integer, db.ForeignKey("experiment.id"), nullable=False)
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experiment = db.relationship("Experiment", back_populates="semester_experiments")
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semester_id = db.Column(db.Integer, db.ForeignKey("semester.id"), nullable=False)
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semester = db.relationship("Semester", back_populates="semester_experiments")
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assistants = db.relationship(
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"Assistant", secondary=experiment_assistant, back_populates="semester_experiments", lazy=True
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)
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group_experiments = db.relationship("GroupExperiment", back_populates="semester_experiment", lazy=True)
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__table_args__ = (db.UniqueConstraint(experiment_id, semester_id),)
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def str_without_semester(self):
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return f"{self.experiment.str()}"
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def str(self):
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return f"{self.str_without_semester()} {self.semester.str()}"
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def __str__(self):
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return f"<{self.str()}>"
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def checkAndRoundWeightings(self):
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roundedOralWeighting = round(self.oral_weighting, 2)
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roundedProtocolWeighting = round(self.protocol_weighting, 2)
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weightingSum = round(roundedOralWeighting + roundedProtocolWeighting, 2)
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if weightingSum != 1:
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raise DataBaseException(
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f"Oral and protocol weightings (rounded to 2 decimal digits) sum to {weightingSum} and not 1.00!"
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)
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self.oral_weighting = roundedOralWeighting
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self.protocol_weighting = roundedProtocolWeighting
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def updateFinalExperimentAndPartMarks(self):
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for groupExperiment in self.group_experiments:
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for experimentMark in groupExperiment.experiment_marks:
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experimentMark.updateFinalExperimentMark()
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for groupExperiment in self.group_experiments:
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for partStudent in groupExperiment.group.part_students:
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partStudent.checkThenSetFinalPartMark()
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class Assistant(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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user_id = db.Column(db.Integer, db.ForeignKey("user.id"), nullable=False, unique=True)
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user = db.relationship("User", back_populates="assistant")
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semester_experiments = db.relationship(
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"SemesterExperiment", secondary=experiment_assistant, back_populates="assistants", lazy=True
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)
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appointments = db.relationship("Appointment", back_populates="assistant", lazy=True)
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experiment_marks = db.relationship("ExperimentMark", back_populates="assistant", lazy=True)
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def str(self):
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return f"{self.user}"
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def __str__(self):
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return self.str()
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class Admin(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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user_id = db.Column(db.Integer, db.ForeignKey("user.id"), nullable=False, unique=True)
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user = db.relationship("User", back_populates="admin")
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experiment_marks = db.relationship("ExperimentMark", back_populates="admin", lazy=True)
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def str(self):
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return f"{self.user}"
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def __str__(self):
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return self.str()
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class Appointment(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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date = db.Column(
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db.Date, db.CheckConstraint(f"date BETWEEN '20{MIN_YEAR}-01-01' AND '20{MAX_YEAR}-01-01'"), nullable=False
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) # To be specified with the python package "datetime"
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special = db.Column(db.Boolean, default=False, nullable=False) # In the break or not
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group_experiment_id = db.Column(db.Integer, db.ForeignKey("group_experiment.id"), nullable=False)
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group_experiment = db.relationship("GroupExperiment", back_populates="appointments")
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assistant_id = db.Column(db.Integer, db.ForeignKey("assistant.id"), nullable=False)
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assistant = db.relationship("Assistant", back_populates="appointments")
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def str(self):
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return f"{self.date} {self.group_experiment.str()}"
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def __str__(self):
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return f"<{self.str()}>"
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def checkAndGetAssistant(groupExperiment, assistant=None):
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semesterExperiment = groupExperiment.semester_experiment
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semesterExperimentAssistants = semesterExperiment.assistants
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if semesterExperimentAssistants is None:
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raise DataBaseException(f"{semesterExperiment} does not have assistants yet!")
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if assistant is not None:
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if assistant not in semesterExperimentAssistants:
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raise DataBaseException(f"{assistant} is not responsible for {semesterExperiment}!")
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else:
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if len(semesterExperimentAssistants) == 1:
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assistant = semesterExperimentAssistants[0]
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else:
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raise DataBaseException(
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f"Experiment {semesterExperiment} has more than one assistant. You have to assign one of these assistants: {semesterExperimentAssistants}"
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)
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return assistant
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def __init__(self, date, special, group_experiment, assistant=None):
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assistant = Appointment.checkAndGetAssistant(group_experiment, assistant)
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super().__init__(
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date=date,
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special=special,
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group_experiment=group_experiment,
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assistant=assistant,
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)
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def custom_update(self, date, special, group_experiment, assistant=None):
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self.assistant = Appointment.checkAndGetAssistant(group_experiment, assistant)
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self.date = date
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self.special = special
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self.group_experiment = group_experiment
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class Part(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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number = db.Column(db.Integer, db.CheckConstraint(f"number >= {MIN_PART_NUMBER}"), nullable=False)
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program_id = db.Column(db.Integer, db.ForeignKey("program.id"), nullable=False)
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program = db.relationship("Program", back_populates="parts")
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semester_id = db.Column(db.Integer, db.ForeignKey("semester.id"), nullable=False)
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semester = db.relationship("Semester", back_populates="parts")
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part_students = db.relationship("PartStudent", back_populates="part", lazy=True)
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__table_args__ = (db.UniqueConstraint(program_id, number, semester_id),)
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def str_without_semester(self):
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return f"{self.program.str()}{self.number}"
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def str(self):
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return f"{self.str_without_semester()} {self.semester.str()}"
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def __str__(self):
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return f"<{self.str()}>"
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class Semester(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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label = db.Column(db.String(10), db.CheckConstraint("label IN ('WS', 'SS')"), nullable=False)
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year = db.Column(db.Integer, db.CheckConstraint(f"year BETWEEN {MIN_YEAR} AND {MAX_YEAR}"), nullable=False)
|
|
|
|
parts = db.relationship("Part", back_populates="semester", lazy=True)
|
|
semester_experiments = db.relationship("SemesterExperiment", back_populates="semester", lazy=True)
|
|
active_users = db.relationship("User", back_populates="active_semester", lazy=True)
|
|
groups = db.relationship("Group", back_populates="semester", lazy=True)
|
|
|
|
__table_args__ = (db.UniqueConstraint(label, year),)
|
|
|
|
def str(self):
|
|
return f"{self.label}{self.year}"
|
|
|
|
def __str__(self):
|
|
return self.str()
|
|
|
|
def __init__(self, label, year):
|
|
last_semester = Semester.lastSemester()
|
|
|
|
if last_semester is not None:
|
|
if year < last_semester.year or (year == last_semester.year and label == "SS"):
|
|
raise DataBaseException(f"You can only create semesters older than the last semester {last_semester}!")
|
|
|
|
super().__init__(label=label, year=year)
|
|
|
|
def initFromOldSemester(label, year, oldSemester, transferParts, transferAssistants):
|
|
semester = Semester(label=label, year=year)
|
|
|
|
if transferParts:
|
|
semester.transferPartsFrom(oldSemester)
|
|
|
|
for experiment in db.session.execute(select(Experiment).where(Experiment.active == True)).scalars():
|
|
newSemesterExperiment = SemesterExperiment(experiment=experiment, semester=semester)
|
|
|
|
if transferAssistants:
|
|
for oldSemesterExperiment in oldSemester.semester_experiments:
|
|
if oldSemesterExperiment.experiment == experiment:
|
|
newSemesterExperiment.assistants = oldSemesterExperiment.assistants
|
|
|
|
db.session.add(newSemesterExperiment)
|
|
|
|
return semester
|
|
|
|
def transferPartsFrom(self, oldSemester):
|
|
for part in oldSemester.parts:
|
|
db.session.add(Part(program=part.program, number=part.number, semester=self))
|
|
|
|
def sortedSemestersStartingWithNewest(limit=0):
|
|
# Inserting an older semester is not allowed!
|
|
# Therefore, the id is enough.
|
|
stmt = select(Semester).order_by(Semester.id.desc())
|
|
|
|
if limit > 0:
|
|
stmt = stmt.limit(limit)
|
|
|
|
return db.session.execute(stmt).scalars()
|
|
|
|
def lastSemester():
|
|
return Semester.sortedSemestersStartingWithNewest(limit=1).first()
|
|
|
|
|
|
class ExperimentMark(db.Model):
|
|
# A mark for a student after a specific experiment
|
|
|
|
def final_experiment_mark_update(context):
|
|
params = context.get_current_parameters()
|
|
|
|
experimentMark = db.session.get(ExperimentMark, params["experiment_mark_id"])
|
|
|
|
oral_mark = params.get("oral_mark")
|
|
if oral_mark is None:
|
|
oral_mark = experimentMark.oral_mark
|
|
if oral_mark is None:
|
|
return
|
|
|
|
protocol_mark = params.get("protocol_mark")
|
|
if protocol_mark is None:
|
|
protocol_mark = experimentMark.protocol_mark
|
|
if protocol_mark is None:
|
|
return
|
|
|
|
semesterExperiment = experimentMark.group_experiment.semester_experiment
|
|
|
|
return roundHalfUpToInt(
|
|
semesterExperiment.oral_weighting * oral_mark + semesterExperiment.protocol_weighting * protocol_mark
|
|
)
|
|
|
|
id = db.Column(db.Integer, primary_key=True)
|
|
|
|
oral_mark = db.Column(
|
|
db.Integer,
|
|
db.CheckConstraint(f"oral_mark BETWEEN {MIN_MARK} AND {MAX_MARK}"),
|
|
nullable=True,
|
|
)
|
|
protocol_mark = db.Column(
|
|
db.Integer,
|
|
db.CheckConstraint(f"oral_mark BETWEEN {MIN_MARK} AND {MAX_MARK}"),
|
|
nullable=True,
|
|
)
|
|
|
|
final_experiment_mark = db.Column(
|
|
db.Integer,
|
|
db.CheckConstraint(f"oral_mark BETWEEN {MIN_MARK} AND {MAX_MARK}"),
|
|
onupdate=final_experiment_mark_update,
|
|
nullable=True,
|
|
)
|
|
|
|
part_student_id = db.Column(db.Integer, db.ForeignKey("part_student.id"), nullable=False)
|
|
part_student = db.relationship("PartStudent", back_populates="experiment_marks")
|
|
group_experiment_id = db.Column(db.Integer, db.ForeignKey("group_experiment.id"), nullable=False)
|
|
group_experiment = db.relationship("GroupExperiment", back_populates="experiment_marks")
|
|
assistant_id = db.Column(
|
|
db.Integer, db.ForeignKey("assistant.id"), nullable=True
|
|
) # The last assistant who edited the mark
|
|
assistant = db.relationship("Assistant", back_populates="experiment_marks")
|
|
admin_id = db.Column(db.Integer, db.ForeignKey("admin.id"), nullable=True) # The last admin who edited the mark
|
|
admin = db.relationship("Admin", back_populates="experiment_marks")
|
|
|
|
__table_args__ = (db.UniqueConstraint(part_student_id, group_experiment_id),)
|
|
|
|
def str(self):
|
|
return (
|
|
f"<Final Exp Mark: {self.final_experiment_mark} | Exp: {self.group_experiment.semester_experiment.str()}>"
|
|
)
|
|
|
|
def __str__(self):
|
|
return self.str()
|
|
|
|
def check(part_student, group_experiment):
|
|
if not part_student.group:
|
|
raise DataBaseException("The part student does not have a group yet!")
|
|
else:
|
|
if group_experiment not in part_student.group.group_experiments:
|
|
raise DataBaseException("The group of the part student does not have the given group experiment!")
|
|
|
|
def __init__(self, part_student, group_experiment):
|
|
ExperimentMark.check(part_student, group_experiment)
|
|
|
|
super().__init__(part_student=part_student, group_experiment=group_experiment)
|
|
|
|
def updateFinalExperimentMark(self):
|
|
if None not in (self.oral_mark, self.protocol_mark):
|
|
semesterExperiment = self.group_experiment.semester_experiment
|
|
self.final_experiment_mark = roundHalfUpToInt(
|
|
semesterExperiment.oral_weighting * self.oral_mark
|
|
+ semesterExperiment.protocol_weighting * self.protocol_mark
|
|
)
|
|
|
|
|
|
class User(db.Model, FsUserMixin):
|
|
first_name = db.Column(db.String(100), nullable=False)
|
|
last_name = db.Column(db.String(100), nullable=False)
|
|
phone_number = db.Column(db.String(50), nullable=True)
|
|
mobile_phone_number = db.Column(db.String(50), nullable=True)
|
|
building = db.Column(db.String(100), nullable=True)
|
|
room = db.Column(db.String(100), nullable=True)
|
|
|
|
active_semester_id = db.Column(db.Integer, db.ForeignKey("semester.id"), nullable=False)
|
|
active_semester = db.relationship("Semester", back_populates="active_users")
|
|
|
|
admin = db.relationship("Admin", back_populates="user", lazy=False, uselist=False)
|
|
assistant = db.relationship("Assistant", back_populates="user", lazy=True, uselist=False)
|
|
|
|
def str(self):
|
|
return f"{self.first_name} {self.last_name}"
|
|
|
|
def __str__(self):
|
|
return self.str()
|
|
|
|
def setActiveSemester(self, semester):
|
|
if semester is None:
|
|
flash(f"Can not change the active semester to None!", "error")
|
|
return
|
|
|
|
if self.active_semester != semester:
|
|
try:
|
|
self.active_semester = semester
|
|
db.session.commit()
|
|
except Exception as ex:
|
|
flash(str(ex), "error")
|
|
|
|
db.session.rollback()
|
|
else:
|
|
flash(f"Active semester changed to {semester}!", "warning")
|
|
|
|
|
|
class Role(db.Model, FsRoleMixin):
|
|
def str(self):
|
|
return f"{self.name}"
|
|
|
|
def __str__(self):
|
|
return self.str()
|
|
|
|
|
|
class Program(db.Model):
|
|
id = db.Column(db.Integer, primary_key=True)
|
|
label = db.Column(db.String(25), nullable=False, unique=True)
|
|
|
|
parts = db.relationship("Part", back_populates="program", lazy=True)
|
|
experiments = db.relationship("Experiment", back_populates="program", lazy=True)
|
|
groups = db.relationship("Group", back_populates="program", lazy=True)
|
|
|
|
def str(self):
|
|
return f"{self.label}"
|
|
|
|
def __str__(self):
|
|
return self.str()
|