DjangoAdmin_FastAPI_EleVue/apps/services/item_cate.py

from datetime import datetime, timezone

from fastapi.logger import logger
from sqlalchemy import and_


from apps.constants.message import PAGE_SIZE
from apps.forms.item_cate import ItemCateForm
from apps.models.item_cate import ItemCate
from apps.services import item
from extensions import get_db_session
from utils import R
from utils.rich_text import get_file_url, save_file
from utils.request import like_contains
from utils.security import get_user_id


# 查询栏目数据

def get_item_cate_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(ItemCate).filter(ItemCate.is_delete == 0)
    # 栏目名称
    name = request.query_params.get('name')
    if name:
        query = query.filter(ItemCate.name.like(like_contains(name), escape='\\'))
    # 栏目状态筛选
    status = request.query_params.get('status')
    if status:
        query = query.filter(ItemCate.status == status)
    # 排序
    query = query.order_by(ItemCate.sort.asc())
    # 记录总数
    count = query.count()
    # 分页查询
    item_cate_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 item_cate_list:
        page = 1
        count = query.count()
        item_cate_list = query.limit(limit).offset(0).all()
    # 实例化结果
    result = []
    # 遍历数据源
    if len(item_cate_list) > 0:
        for v in item_cate_list:
            # 对象转字典
            data = v.to_dict()
            # 栏目图片
            data['cover'] = get_file_url(v.cover) if v.cover else None
            # 查询站点信息
            item_info = item.get_item_detail(v.id)
            if item_info:
                data['item_name'] = item_info.get('name') if item_info else None
            # 加入列表
            result.append(data)
    # 返回结果
    return R.ok(data=result, count=count)
# 根据栏目ID查询详情

def get_item_cate_detail(itemcate_id):
    db = get_db_session()
    # 根据ID查询栏目
    cate = db.query(ItemCate).filter(and_(ItemCate.id == itemcate_id, ItemCate.is_delete == 0)).first()
    # 查询结果判空
    if not cate:
        return None
    # 对象转字典
    data = cate.to_dict()
    # 栏目图片
    if cate.cover:
        data['cover'] = get_file_url(cate.cover)
    # 返回结果
    return data
# 添加栏目

def add_item_cate(request, data: ItemCateForm):
    db = get_db_session()
    # 唯一性校验
    if db.query(ItemCate).filter(and_(ItemCate.name == data.name, ItemCate.is_delete == 0)).first():
        return R.failed("栏目名称不能重复")
    # 表单数据转字典
    form_data = data.model_dump(exclude={'id'})

    # 是否有封面
    is_cover = data.is_cover
    if is_cover == 1:
        # 栏目图片
        cover = data.cover
        # 图片处理
        if cover:
            form_data['cover'] = save_file(cover, "item_cate")
        else:
            form_data['cover'] = None
    else:
        form_data['cover'] = None

    # 表单数据赋值给对象
    cate = ItemCate(**form_data)
    cate.create_user = get_user_id(request)
    # 插入数据
    cate.save()
    # 返回结果
    return R.ok(msg="添加成功")


# 更新栏目

def update_item_cate(request, data: ItemCateForm):
    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(ItemCate).filter(and_(ItemCate.name == data.name, ItemCate.id != data.id, ItemCate.is_delete == 0)).first():
        return R.failed("栏目名称不能重复")

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

    # 构造更新数据（排除 id）
    updData = data.model_dump(exclude={'id'})
    # 是否有封面
    is_cover = data.is_cover
    if is_cover == 1:
        # 栏目图片
        cover = data.cover
        # 图片处理
        if cover:
            updData['cover'] = save_file(cover, "item_cate")
        else:
            updData['cover'] = None
    else:
        updData['cover'] = None
    updData['update_user'] = get_user_id(request)
    updData['update_time'] = datetime.now(tz=timezone.utc)
    # 更新数据
    result = db.query(ItemCate).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")
# 删除栏目

def delete_item_cate(cate_id):
    return ItemCate.batch_delete_r(cate_id)
# 获取栏目列表

def get_cate_list():
    db = get_db_session()
    cate_rows = db.query(ItemCate).filter(and_(ItemCate.is_delete == 0, ItemCate.status == 1)).order_by(
        ItemCate.sort.asc()).all()
    # 实例化栏目列表
    cate_list = []
    # 遍历数据源
    for v in cate_rows:
        # 对象转字典
        item = v.to_dict()
        # 加入列表
        cate_list.append(item)
    # 返回结果
    return cate_list