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from typing import TYPE_CHECKING
from sqlalchemy import Column, Integer, String, DateTime, ARRAY, ForeignKey
from sqlalchemy.orm import relationship
from sqlalchemy.sql.schema import UniqueConstraint
from sqlalchemy.sql.sqltypes import JSON
from core.db import Base
class AssignmentUpload(Base):
id = Column(Integer, primary_key=True)
submission_date = Column(DateTime, nullable=True)
marks_obtained = Column(Integer, nullable=True)
files = Column(ARRAY(JSON), nullable=True)
assignment_id = Column(Integer, ForeignKey("assignment.id", ondelete="cascade"))
assignment = relationship("Assignment", backref="assignment_upload")
student_id = Column(Integer, ForeignKey("user.id", ondelete="cascade"))
student = relationship("User", backref="assignment_upload")
__table_args__ = (
UniqueConstraint("assignment_id", "student_id", name="__student_assignment_uc"),
)
__tablename__ = "assignment_upload" # noqa
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