- API 路由统一: 移除 /api/h5/,统一 /api/pms/ 入口 - 二进制改名: api-server -> pms-api(与服务名一致) - nginx: 合并 /api/ + /pms/api/ 为 /api/pms/ - 新增 docs/API.md 接口文档 - 后端: CabinetDetail 增加 rssi/pow_fail/address/soc 等字段 - Redis 管道批量读取仓体实时数据(SOC/电压/电流/功率) - DB: 所有 TIMESTAMP 列改为 DATETIME(修复类型不匹配) - 用户管理: 新增创建时间/修改时间列,状态改用 Switch - 角色管理/用户管理: 操作按钮改为图标 - PC 设备详情: 基本信息补全 RSSI/ICCID/电源/地址 - PC 卡片: 通道统计改用 Lucide 图标,颜色统一 - PC 二维码: canvas 渲染,含编号文字,支持右键下载 - H5: 按 uni-app 规范修正导航(navigateTo 替代 reLaunch) - H5: 详情页加返回导航条 - H5: 扫码支持摄像头(jsQR)+ ?id= 参数 - H5: 底部 tabBar 在所有页面常显 - H5: 首页统计改为 6 项(设备/通道/空闲/充电/充满/故障) - H5: 下拉刷新 / 上拉加载 - 产品首页: 添加业务联系 - 文档: 清理过时文件,补充缺失规范章节
2.4 KiB
2.4 KiB
Multi-Root Component Class Attribute Inheritance
Rule
When a Vue 3 component has multiple root elements, class and style bindings from the parent will NOT automatically fall through. You must explicitly bind $attrs.class or $attrs.style to the target element.
Why This Matters
- Vue 3 components can have multiple root elements (fragments)
- Unlike single-root components, multi-root components have no automatic attribute fallthrough
- Without explicit handling, classes and styles passed from parent are silently ignored
- Vue will emit a runtime warning, but styles/classes simply won't apply
Bad Code
<!-- ChildComponent.vue - WRONG: classes from parent won't apply -->
<template>
<header>Header</header>
<main>Content</main>
<footer>Footer</footer>
</template>
<!-- Parent usage -->
<ChildComponent class="my-custom-class" />
<!-- Result: my-custom-class is NOT applied to any element -->
Good Code
<!-- ChildComponent.vue - CORRECT: explicitly bind $attrs.class -->
<template>
<header>Header</header>
<main :class="$attrs.class" :style="$attrs.style">Content</main>
<footer>Footer</footer>
</template>
<!-- Or bind all attrs to one element -->
<template>
<header>Header</header>
<main v-bind="$attrs">Content</main>
<footer>Footer</footer>
</template>
Accessing $attrs in script setup
<script setup>
import { useAttrs } from 'vue'
const attrs = useAttrs()
// attrs.class and attrs.style are available
</script>
<template>
<header>Header</header>
<main :class="attrs.class">Content</main>
<footer>Footer</footer>
</template>
Disabling Automatic Inheritance
For single-root components where you want to control attribute placement:
<script>
export default {
inheritAttrs: false
}
</script>
<script setup>
import { useAttrs } from 'vue'
const attrs = useAttrs()
</script>
<template>
<div class="wrapper">
<input v-bind="attrs" />
</div>
</template>
Vue 2 to Vue 3 Migration Note
In Vue 2, $attrs did NOT include class and style. In Vue 3, $attrs contains ALL attributes including class and style. This is a breaking change that affects how you handle attribute forwarding.