DjangoAdmin_FastAPI_EleVue/apps/services/role.py

import asyncio
from datetime import datetime, timezone

from fastapi.logger import logger
from sqlalchemy import and_

from apps.constants.message import PAGE_SIZE
from apps.forms.role import RoleForm, RoleStatusForm
from apps.models.role import Role
from extensions import get_db_session
from utils import R
from utils.security import get_user_id
from utils.request import like_contains, parse_id_list
from utils.perm_cache import invalidate_role_perms


# 查询角色分页数据

def get_role_page(request):
    db = get_db_session()
    # 页码
    page = int(request.query_params.get("pageNo", 1))
    # 每页数
    limit = int(request.query_params.get("pageSize", PAGE_SIZE))
    # 分页查询
    query = db.query(Role).filter(Role.is_delete == 0)
    # 角色名称
    name = request.query_params.get('name')
    if name:
        query = query.filter(Role.name.like(like_contains(name), escape='\\'))
    # 排序
    query = query.order_by(Role.sort.asc())
    # 记录总数
    count = query.count()
    # 查询分页数据
    role_list = query.limit(limit).offset((page - 1) * limit).all()
    # 若当前页超出末页（数据被并发删除），自动回退到第一页
    if page > 1 and not role_list:
        page = 1
        count = query.count()
        role_list = query.limit(limit).offset(0).all()
    # 实例化返回对象
    result = []
    # 遍历数据源
    if len(role_list) > 0:
        for item in role_list:
            # 对象转字典
            data = item.to_dict()
            # 加入列表
            result.append(data)
    # 返回结果
    return R.ok(data=result, count=count)
# 根据角色ID查询详情

def get_role_detail(role_id):
    db = get_db_session()
    # 根据ID查询角色
    role = db.query(Role).filter(and_(Role.id == role_id, Role.is_delete == 0)).first()
    # 查询结果判空
    if not role:
        return None
    # 对象转字典
    data = role.to_dict()
    # 返回结果
    return data
# 添加角色

def add_role(request, data: RoleForm):
    db = get_db_session()
    # 唯一性校验
    if db.query(Role).filter(and_(Role.name == data.name, Role.is_delete == 0)).first():
        return R.failed("角色名称不能重复")
    # 表单数据赋值给对象
    role = Role(**data.model_dump(exclude={'id'}))
    role.create_user = get_user_id(request)
    # 插入数据
    role.save()
    # 返回结果
    return R.ok(msg="添加成功")


# 更新角色

def update_role(request, data: RoleForm):
    db = get_db_session()
    # 记录ID判空
    if not data.id or data.id <= 0:
        return R.failed("记录ID不能为空")
    # 唯一性校验（排除自身）
    if db.query(Role).filter(and_(Role.name == data.name, Role.id != data.id, Role.is_delete == 0)).first():
        return R.failed("角色名称不能重复")

    # 根据ID查询记录
    role = db.query(Role).filter(and_(Role.id == data.id, Role.is_delete == 0)).first()
    # 查询结果判空
    if not role:
        return R.failed("记录不存在")
    # 构造更新数据（排除 id）
    updData = data.model_dump(exclude={'id'})
    updData['update_user'] = get_user_id(request)
    updData['update_time'] = datetime.now(tz=timezone.utc)
    result = db.query(Role).filter_by(id=data.id).update(updData)
    # 提交数据
    if not result:
        return R.failed("更新失败")
    # 返回结果
    return R.ok(msg="更新成功")
# 删除角色

async def delete_role(role_id):
    def _delete():
        db = get_db_session()
        # 记录ID为空判断
        if not role_id:
            return R.failed("记录ID不存在"), None
        # 分裂字符串
        id_list = parse_id_list(role_id)
        if not id_list:
            return R.failed("记录ID不存在"), None
        # 批量查询并校验
        records = db.query(Role).filter(and_(Role.id.in_(id_list), Role.is_delete == 0)).all()
        if len(records) != len(id_list):
            return R.failed("记录不存在"), None
        # 批量设置删除标识
        for record in records:
            record.is_delete = 1
        return None, (id_list, records)

    # 同步DB操作放入线程池，避免阻塞事件循环
    err, result = await asyncio.to_thread(_delete)
    if err:
        return err
    id_list, records = result

    # 清理被删角色下所有用户的权限缓存
    for rid in id_list:
        await invalidate_role_perms(rid)
    # 返回结果
    return R.ok(msg="本次共删除{0}条数据".format(len(records)))
# 设置状态

def update_role_status(request, data: RoleStatusForm):
    db = get_db_session()
    # 根据ID查询记录
    role = db.query(Role).filter(and_(Role.id == data.id, Role.is_delete == 0)).first()
    # 查询结果判空
    if not role:
        return R.failed("记录不存在")

    # 更新记录
    result = db.query(Role).filter_by(id=data.id).update({
        "status": data.status,
        "update_user": get_user_id(request),
        "update_time": datetime.now(tz=timezone.utc)
    })
    # 提交数据
    if not result:
        return R.failed("设置失败")
    # 返回结果
    return R.ok(msg="设置成功")
# 获取角色列表

def get_role_list():
    db = get_db_session()
    # 查询角色列表
    role_rows = db.query(Role).filter(and_(Role.is_delete == 0, Role.status == 1)).order_by(Role.sort.asc()).all()
    # 实例化角色列表
    role_list = []
    # 遍历数据源
    if role_rows:
        for v in role_rows:
            # 对象转字典
            item = v.to_dict()
            # 加入数组
            role_list.append(item)
    # 返回结果
    return role_list