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Yannic Kilcher
58 lines
2.0 KiB
Python
58 lines
2.0 KiB
Python
# -*- coding: utf-8 -*-
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from typing import Any, Dict, Generic, List, Optional, Type, TypeVar, Union
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from fastapi.encoders import jsonable_encoder
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from pydantic import BaseModel
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from sqlmodel import Session, SQLModel
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ModelType = TypeVar("ModelType", bound=SQLModel)
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CreateSchemaType = TypeVar("CreateSchemaType", bound=BaseModel)
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UpdateSchemaType = TypeVar("UpdateSchemaType", bound=BaseModel)
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class CRUDBase(Generic[ModelType, CreateSchemaType, UpdateSchemaType]):
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def __init__(self, model: Type[ModelType]):
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"""
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CRUD object with default methods to Create, Read, Update, Delete (CRUD).
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**Parameters**
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* `model`: A SQLModel model class
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* `schema`: A Pydantic model (schema) class
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"""
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self.model = model
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def get(self, db: Session, id: Any) -> Optional[ModelType]:
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return db.query(self.model).filter(self.model.id == id).first()
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def get_multi(self, db: Session, *, begin_id: int = 0, limit: int = 100) -> List[ModelType]:
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return db.query(self.model).filter(self.model.id >= begin_id).limit(limit).all()
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def create(self, db: Session, *, obj_in: CreateSchemaType) -> ModelType:
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obj_in_data = jsonable_encoder(obj_in)
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db_obj = self.model(**obj_in_data) # type: ignore
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db.add(db_obj)
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db.commit()
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db.refresh(db_obj)
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return db_obj
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def update(self, db: Session, *, db_obj: ModelType, obj_in: Union[UpdateSchemaType, Dict[str, Any]]) -> ModelType:
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obj_data = jsonable_encoder(db_obj)
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if isinstance(obj_in, dict):
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update_data = obj_in
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else:
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update_data = obj_in.dict(exclude_unset=True)
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for field in obj_data:
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if field in update_data:
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setattr(db_obj, field, update_data[field])
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db.add(db_obj)
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db.commit()
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db.refresh(db_obj)
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return db_obj
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def delete(self, db: Session, *, id: int) -> ModelType:
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obj = db.query(self.model).get(id)
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db.delete(obj)
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db.commit()
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return obj
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