File size: 1,465 Bytes
7c6ffa6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | from __future__ import annotations
from datetime import datetime
from sqlalchemy import DateTime, Float, ForeignKey, Integer, String, func
from sqlalchemy.orm import Mapped, mapped_column
from app.core.database import Base
from app.utils.ids import prefixed_id
class StudentWeakTopic(Base):
__tablename__ = "student_weak_topics"
id: Mapped[str] = mapped_column(
String(40),
primary_key=True,
default=lambda: prefixed_id("wt"),
)
user_id: Mapped[str] = mapped_column(
String(40),
ForeignKey("users.id", ondelete="CASCADE"),
index=True,
nullable=False,
)
topic_name: Mapped[str] = mapped_column(String(255), index=True, nullable=False)
subject: Mapped[str | None] = mapped_column(String(255), nullable=True)
frequency: Mapped[int] = mapped_column(Integer, default=1, nullable=False)
weak_topic_score: Mapped[float] = mapped_column(Float, default=0.2, nullable=False)
topic_attempt_count: Mapped[int] = mapped_column(Integer, default=1, nullable=False)
topic_confidence: Mapped[float] = mapped_column(Float, default=0.5, nullable=False)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True),
server_default=func.now(),
nullable=False,
)
updated_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True),
server_default=func.now(),
onupdate=func.now(),
nullable=False,
)
|