from sqlalchemy import Column, Integer, String, ForeignKey
from sqlalchemy.orm import relationship

from app.domain.models import Base


class Lecture(Base):
    __tablename__ = 'lectures'

    id = Column(Integer, primary_key=True, autoincrement=True)
    text = Column(String, nullable=False)
    image = Column(String)
    number = Column(Integer, nullable=False)

    step_id = Column(Integer, ForeignKey('steps.id'), nullable=False)

    step = relationship('Step', back_populates='lectures')