# -*- coding:utf-8 -*- import io from typing import Any, List, Dict, Optional from fastapi import UploadFile import pandas as pd from app.core.base_schema import BatchSetAvailable from app.core.exceptions import CustomException from app.utils.excel_util import ExcelUtil from app.core.logger import logger from app.api.v1.module_system.auth.schema import AuthSchema from .schema import {{ class_name }}CreateSchema, {{ class_name }}UpdateSchema, {{ class_name }}OutSchema from .param import {{ class_name }}QueryParam from .crud import {{ class_name }}CRUD class {{ class_name }}Service: """ {{ function_name }}服务层 """ @classmethod async def detail_service(cls, auth: AuthSchema, id: int) -> Dict: """详情""" obj = await {{ class_name }}CRUD(auth).get_by_id_crud(id=id) if not obj: raise CustomException(msg="该数据不存在") return {{ class_name }}OutSchema.model_validate(obj).model_dump() @classmethod async def list_service(cls, auth: AuthSchema, search: Optional[{{ class_name }}QueryParam] = None, order_by: Optional[List[Dict[str, str]]] = None) -> List[Dict]: """列表查询""" search_dict = search.__dict__ if search else None obj_list = await {{ class_name }}CRUD(auth).list_crud(search=search_dict, order_by=order_by) return [{{ class_name }}OutSchema.model_validate(obj).model_dump() for obj in obj_list] @classmethod async def page_service(cls, auth: AuthSchema, page_no: int, page_size: int, search: Optional[{{ class_name }}QueryParam] = None, order_by: Optional[List[Dict[str, str]]] = None) -> Dict: """分页查询（数据库分页）""" search_dict = search.__dict__ if search else {} order_by_list = order_by or [{'id': 'asc'}] offset = (page_no - 1) * page_size result = await {{ class_name }}CRUD(auth).page_crud( offset=offset, limit=page_size, order_by=order_by_list, search=search_dict ) return result @classmethod async def create_service(cls, auth: AuthSchema, data: {{ class_name }}CreateSchema) -> Dict: """创建""" # 检查唯一性约束 {% for column in columns %} {% if column.is_unique == '1' %} obj = await {{ class_name }}CRUD(auth).get({{ column.column_name }}=data.{{ column.column_name }}) if obj: raise CustomException(msg='创建失败，{{ column.column_comment }}已存在') {% endif %} {% endfor %} obj = await {{ class_name }}CRUD(auth).create_crud(data=data) return {{ class_name }}OutSchema.model_validate(obj).model_dump() @classmethod async def update_service(cls, auth: AuthSchema, id: int, data: {{ class_name }}UpdateSchema) -> Dict: """更新""" # 检查数据是否存在 obj = await {{ class_name }}CRUD(auth).get_by_id_crud(id=id) if not obj: raise CustomException(msg='更新失败，该数据不存在') # 检查唯一性约束 {% for column in columns %} {% if column.is_unique == '1' %} exist_obj = await {{ class_name }}CRUD(auth).get({{ column.column_name }}=data.{{ column.column_name }}) if exist_obj and exist_obj.id != id: raise CustomException(msg='更新失败，{{ column.column_comment }}重复') {% endif %} {% endfor %} obj = await {{ class_name }}CRUD(auth).update_crud(id=id, data=data) return {{ class_name }}OutSchema.model_validate(obj).model_dump() @classmethod async def delete_service(cls, auth: AuthSchema, ids: List[int]) -> None: """删除""" if len(ids) < 1: raise CustomException(msg='删除失败，删除对象不能为空') for id in ids: obj = await {{ class_name }}CRUD(auth).get_by_id_crud(id=id) if not obj: raise CustomException(msg=f'删除失败，ID为{id}的数据不存在') await {{ class_name }}CRUD(auth).delete_crud(ids=ids) @classmethod async def set_available_service(cls, auth: AuthSchema, data: BatchSetAvailable) -> None: """批量设置状态""" await {{ class_name }}CRUD(auth).set_available_crud(ids=data.ids, status=data.status) @classmethod async def batch_export_service(cls, obj_list: List[Dict[str, Any]]) -> bytes: """批量导出""" mapping_dict = { {% for column in columns %} '{{ column.column_name }}': '{{ column.column_comment }}', {% endfor %} 'creator': '创建者', } data = obj_list.copy() for item in data: # 状态转换 if 'status' in item: item['status'] = '正常' if item.get('status') else '停用' # 创建者转换 creator_info = item.get('creator') if isinstance(creator_info, dict): item['creator'] = creator_info.get('name', '未知') elif creator_info is None: item['creator'] = '未知' return ExcelUtil.export_list2excel(list_data=data, mapping_dict=mapping_dict) @classmethod async def batch_import_service(cls, auth: AuthSchema, file: UploadFile, update_support: bool = False) -> str: """批量导入""" header_dict = { {% for column in columns %} '{{ column.column_comment }}': '{{ column.column_name }}', {% endfor %} } try: contents = await file.read() df = pd.read_excel(io.BytesIO(contents)) await file.close() if df.empty: raise CustomException(msg="导入文件为空") missing_headers = [header for header in header_dict.keys() if header not in df.columns] if missing_headers: raise CustomException(msg=f"导入文件缺少必要的列: {', '.join(missing_headers)}") df.rename(columns=header_dict, inplace=True) # 验证必填字段 {% for column in columns %} {% if column.required == '1' %} missing_rows = df[df['{{ column.column_name }}'].isnull()].index.tolist() if missing_rows: raise CustomException(msg="{{ column.column_comment }}不能为空，第{0}行".format([i+1 for i in missing_rows])) {% endif %} {% endfor %} error_msgs = [] success_count = 0 count = 0 for index, row in df.iterrows(): count += 1 try: data = { {% for column in columns %} "{{ column.column_name }}": row['{{ column.column_name }}'], {% endfor %} } # 使用CreateSchema做校验后入库 create_schema = {{ class_name }}CreateSchema.model_validate(data) # 检查唯一性约束 {% for column in columns %} {% if column.is_unique == '1' %} exists_obj = await {{ class_name }}CRUD(auth).get({{ column.column_name }}=create_schema.{{ column.column_name }}) if exists_obj: if update_support: await {{ class_name }}CRUD(auth).update(id=exists_obj.id, data=create_schema) success_count += 1 else: error_msgs.append(f"第{count}行: {{ column.column_comment }} {create_schema.{{ column.column_name }}} 已存在") continue {% endif %} {% endfor %} await {{ class_name }}CRUD(auth).create_crud(data=create_schema) success_count += 1 except Exception as e: error_msgs.append(f"第{count}行: {str(e)}") continue result = f"成功导入 {success_count} 条数据" if error_msgs: result += "\n错误信息:\n" + "\n".join(error_msgs) return result except Exception as e: logger.error(f"批量导入失败: {str(e)}") raise CustomException(msg=f"导入失败: {str(e)}") @classmethod async def import_template_download_service(cls) -> bytes: """下载导入模板""" header_list = [ {% for column in columns %} '{{ column.column_comment }}', {% endfor %} ] selector_header_list = [] option_list = [] # 添加下拉选项 {% for column in columns %} {% if column.html_type == 'select' and column.dict_type %} selector_header_list.append('{{ column.column_comment }}') option_list.append({'{{ column.column_comment }}': []}) # 这里应该从字典中获取选项 {% endif %} {% endfor %} return ExcelUtil.get_excel_template( header_list=header_list, selector_header_list=selector_header_list, option_list=option_list )