50 lines
1.8 KiB
Python
50 lines
1.8 KiB
Python
from app.models.user import User
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from app.auth.deps import get_current_user
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from fastapi import Request
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from strawberry.fastapi import BaseContext
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from strawberry.dataloader import DataLoader
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from typing import List
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from collections import defaultdict
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from app.db import SessionLocal
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from app.models import WorkspaceMember
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from typing import AsyncGenerator
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# 定义批量查询函数：接收一组 workspace ID 列表，返回相同长度的结果列表
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async def load_members_by_workspace_ids(workspace_ids: List[str]) -> List[List[WorkspaceMember]]:
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db = SessionLocal()
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try:
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# 用一条 IN 语句查出所有相关成员
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members = db.query(WorkspaceMember).filter(WorkspaceMember.workspace_id.in_(workspace_ids)).all()
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# 将结果归类到对应的 workspace ID
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member_map = defaultdict(list)
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for member in members:
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member_map[member.workspace_id].append(member)
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# 严格按照传入的 workspace ID 顺序返回结果列表
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return [member_map[w_id] for w_id in workspace_ids]
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finally:
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db.close()
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class CustomContext(BaseContext):
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def __init__(self, request: Request):
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super().__init__(request)
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self.db = SessionLocal()
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self.request = request
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self.members_loader = DataLoader(load_fn=load_members_by_workspace_ids)
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async def get_current_user(self) -> User | None:
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# 复用现有的 auth 逻辑
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try:
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return await get_current_user(self.request)
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except Exception:
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return None
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async def get_context(request: Request) -> AsyncGenerator[CustomContext, None]:
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context = CustomContext(request)
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try:
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yield context
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finally:
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context.db.close() # 确保请求结束时关闭数据库连接 |