156 lines
6.0 KiB
Python
156 lines
6.0 KiB
Python
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from typing import TypeVar, Generic, Any, List, get_args, Union
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from sqlalchemy.orm import Session
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from Utils.SqlAlchemyUtils import Base, get_db
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from pydantic import BaseModel
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from fastapi import APIRouter, Depends
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from pydantic.generics import GenericModel
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class QueryBase(BaseModel):
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page_size: Union[int, None]
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page: Union[int, None]
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class ItemId(BaseModel):
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id: Any
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ModelType = TypeVar("ModelType", bound=BaseModel)
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CreateSchemaType = TypeVar("CreateSchemaType", bound=BaseModel)
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UpdateSchemaType = TypeVar("UpdateSchemaType", bound=BaseModel)
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QuerySchemaType = TypeVar("QuerySchemaType", bound=QueryBase)
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# UpdateSchemaType = TypeVar("UpdateSchemaType", bound=BaseModel)
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DbModelType = TypeVar("DbModelType", bound=Base)
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DataType = TypeVar("DataType", BaseModel, Any)
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class BaseResponseModel(GenericModel, Generic[DataType]):
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state: int
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msg: str
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data: DataType
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def get_generic_type_arg(cls):
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t = cls.__orig_bases__[0]
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return get_args(t)[0]
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class CRUDBase(Generic[DbModelType, ModelType, CreateSchemaType, UpdateSchemaType, QuerySchemaType]):
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def __init__(self,
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db_model: DbModelType,
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model_type: BaseModel,
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create_schema_type: CreateSchemaType,
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update_schema_type: UpdateSchemaType,
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query_schema_type: QuerySchemaType, name: str, chinese_name: str = ''):
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self.db_model = db_model
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self.name = name
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self.model_type = model_type
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self.create_schema_type = create_schema_type
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self.update_schema_type = update_schema_type
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self.query_schema_type = query_schema_type
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self.summary_name = chinese_name if chinese_name else self.name
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def mount(self, router: APIRouter):
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for key in self.__dir__():
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if key.endswith('_create'):
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getattr(self, key)(router)
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def add_route_func_create(self, router: APIRouter):
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create_schema_type = self.create_schema_type
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@router.post(f'/{self.name}/add',
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response_model=BaseResponseModel[self.model_type],
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summary=f"添加{self.summary_name}")
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def add_route_func(create_model_obj: create_schema_type, db: Session = Depends(get_db)):
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new_item = self.add(db, create_model_obj)
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item_info = new_item.to_dict()
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return BaseResponseModel(state=1, msg="", data=self.model_type(**item_info))
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return add_route_func
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def update_route_func_create(self, router: APIRouter):
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update_schema_type = self.update_schema_type
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@router.post(f'/{self.name}/update',
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response_model=BaseResponseModel[Any],
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summary=f"修改{self.summary_name}")
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def update_route_func(update_model_obj: update_schema_type, db: Session = Depends(get_db)):
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self.update(db, update_model_obj)
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return BaseResponseModel(state=1, msg="", data={})
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return update_route_func
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def delete_route_func_create(self, router: APIRouter):
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@router.post(f'/{self.name}/delete',
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response_model=BaseResponseModel[Any],
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summary=f"删除{self.summary_name}")
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def delete_route_func(item_id: ItemId, db: Session = Depends(get_db)):
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self.delete(db, item_id.id)
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return BaseResponseModel(state=1, msg="", data={})
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return delete_route_func
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def get_route_func_create(self, router: APIRouter):
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@router.post(f'/{self.name}/get',
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response_model=BaseResponseModel[self.model_type],
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summary=f"获取{self.summary_name}")
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def get_route_func(item_id: ItemId, db: Session = Depends(get_db)):
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item = self.get(db, item_id.id)
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return BaseResponseModel(state=1, msg="", data=item.to_dict())
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return get_route_func
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def query_route_func_create(self, router: APIRouter):
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model_type = self.model_type
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query_schema_type = self.query_schema_type
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class QueryRes(BaseModel, Generic[ModelType]):
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count: int
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item_list: List[model_type]
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@router.post(f'/{self.name}/query',
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response_model=BaseResponseModel[QueryRes],
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summary=f"查询{self.summary_name}")
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def query_route_func(params: query_schema_type, db: Session = Depends(get_db)):
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count, query = self.query(db, params)
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item_list = [item.to_dict() for item in query]
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return BaseResponseModel(state=1, msg="", data=QueryRes(count=count, item_list=item_list))
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return query_route_func
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def add(self, db: Session, create_model_obj: CreateSchemaType) -> ModelType:
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new_item = self.db_model(**create_model_obj.dict())
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db.add(new_item)
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db.commit()
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db.refresh(new_item)
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return new_item
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def delete(self, db: Session, item_id):
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if type(item_id) == list:
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db.query(self.db_model).filter(getattr(self.db_model, 'id').in_(item_id)).delete()
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else:
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db.query(self.db_model).filter_by(id=item_id).delete()
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def update(self, db: Session, update_model_obj: UpdateSchemaType):
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db.query(self.db_model).filter_by(id=update_model_obj.id).update(update_model_obj.dict())
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db.commit()
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def query(self, db: Session, params: QuerySchemaType) -> [int, List[ModelType]]:
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params_dict = params.dict()
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query = db.query(self.db_model)
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for key, value in params_dict.items():
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if key not in ['page', 'page_size'] and value is not None:
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if type(value) == str:
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query = query.filter(getattr(self.db_model, key).like(f'%{value}%'))
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if type(value) in [int, float]:
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query = query.filter_by(**{key: value})
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count = query.count()
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if params.page is not None and params.page_size is not None:
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query = query.offset((params.page - 1) * params.page_size).limit(params.page).all()
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return count, query
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def get(self, db: Session, item_id) -> ModelType:
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return db.query(self.db_model).get(item_id)
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