46 lines
1.2 KiB
Python
46 lines
1.2 KiB
Python
from typing import TypeVar, Any, Dict, Generic, Callable
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from sqlalchemy import create_engine, Column, Integer
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import sessionmaker
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from sqlalchemy.sql.schema import Table
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from settings import DB_URL
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engine = create_engine(DB_URL, convert_unicode=True, echo=False)
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Session = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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global_session = Session()
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T = TypeVar("T")
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REGISTRY: Dict[str, type] = {}
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class Base(declarative_base()):
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__table__: Table
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__tablename__: str
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__new__: Callable
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__init__: Callable
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__abstract__: bool = True
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__table_args__ = {"extend_existing": True}
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id: int = Column(Integer, primary_key=True)
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session = global_session
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def __init_subclass__(cls, **kwargs):
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REGISTRY[cls.__name__] = cls
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@classmethod
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def create(cls: Generic[T], **kwargs) -> Generic[T]:
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instance = cls(**kwargs)
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return instance.save()
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def save(self) -> Generic[T]:
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self.session.add(self)
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self.session.commit()
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return self
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def dict(self) -> Dict[str, Any]:
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column_names = self.__table__.columns.keys()
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return {c: getattr(self, c) for c in column_names}
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