DjangoAdmin_FastAPI_EleVue/modules/notice/service.py

from datetime import datetime, timezone

from fastapi.logger import logger
from sqlalchemy import and_

from shared.enums import NOTICE_SOURCE_LIST
from shared.constants import PAGE_SIZE
from modules.notice.schemas import NoticeForm
from modules.notice.models import Notice
from config import FASTAPI_IMAGE_URL
from core.database import get_db_session
from core import R
from utils.rich_text import save_content
from utils.request import like_contains
from core.security import get_user_id


# 查询通知公告分页数据

def get_notice_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))
    # 实例化查询对象
    query = db.query(Notice).filter(Notice.is_delete == 0)
    # 通知公告标题
    title = request.query_params.get('title')
    if title:
        query = query.filter(Notice.title.like(like_contains(title), escape='\\'))
    # 通知来源：1官方平台 2开源中国 3CSDN官方 4新浪微博
    source = request.query_params.get('source')
    if source:
        query = query.filter(Notice.source == source)
    # 通知状态：1-正常 2-停用
    status = request.query_params.get('status')
    if status:
        query = query.filter(Notice.status == status)
    # 排序
    query = query.order_by(Notice.id.desc())
    # 记录总数
    count = query.count()
    # 分页查询
    notice_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 notice_list:
        page = 1
        count = query.count()
        notice_list = query.limit(limit).offset(0).all()
    # 实例化结果
    result = []
    # 遍历数据源
    if len(notice_list) > 0:
        for item in notice_list:
            # 对象转字典
            data = item.to_dict()
            # 通知来源描述
            data['source_name'] = NOTICE_SOURCE_LIST.get(item.source)
            # 加入列表
            result.append(data)
    # 返回结果
    return R.ok(data=result, count=count)
# 根据通知ID查询详情

def get_notice_detail(notice_id):
    db = get_db_session()
    # 根据ID查询通知公告
    notice = db.query(Notice).filter(and_(Notice.id == notice_id, Notice.is_delete == 0)).first()
    # 查询结果判空
    if not notice:
        return None
    # 对象转字典
    data = notice.to_dict()
    # 富文本内容
    content = (notice.content or "").replace("[IMG_URL]", FASTAPI_IMAGE_URL)
    data['content'] = content
    # 通知来源
    data['source_name'] = NOTICE_SOURCE_LIST.get(notice.source)
    # 返回结果
    return data
# 添加通知公告

def add_notice(request, data: NoticeForm):
    db = get_db_session()
    # 通知标题
    title = data.title
    # 通知内容
    content = data.content
    # 处理富文本内容
    content = save_content(content, title, "notice")

    # 表单数据赋值给对象
    notice = Notice(**data.model_dump(exclude={'id'}))
    notice.content = content
    notice.create_user = get_user_id(request)
    # 插入数据
    notice.save()
    # 返回结果
    return R.ok(msg="添加成功")


# 更新通知公告

def update_notice(request, data: NoticeForm):
    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")

    # 根据ID查询记录
    notice = db.query(Notice).filter(and_(Notice.id == data.id, Notice.is_delete == 0)).first()
    # 查询结果判空
    if not notice:
        return R.failed("记录不存在")

    # 通知标题
    title = data.title
    # 通知内容
    content = data.content
    # 处理富文本内容
    content = save_content(content, title, "notice")
    # 构造更新数据（排除 id）
    updData = data.model_dump(exclude={'id'})
    updData['content'] = content
    updData['update_user'] = get_user_id(request)
    updData['update_time'] = datetime.now(tz=timezone.utc)
    # 更新记录
    result = db.query(Notice).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")
# 删除通知公告

def delete_notice(notice_id):
    return Notice.batch_delete_r(notice_id)