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本系列汇总，请查看这里：https://www.cnblogs.com/uncleyong/p/19503695

删除前，数据库数据

student.py

from typing import List

from fastapi import APIRouter
from fastapi.exceptions import HTTPException
from pydantic import BaseModel, field_validator

from test_orm.models import Student, Course

student_api = APIRouter()


@student_api.delete("/{student_id}")
async def deleteStudent(student_id: int):
    deleteCount = await Student.filter(id=student_id).delete()
    if not deleteCount:
        raise HTTPException(status_code=404, detail=f"主键为{student_id}的学生不存在")

    return {}

请求数据

响应结果

删除后，数据库数据

总结：关联表的数据也删除了。