12451 b553c4e519 feat: API 统一 + 设备详情补全 + H5 导航优化
- 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
2026-07-04 04:03:02 +08:00

3.2 KiB

name, description
name description
provide-inject Pass data through component tree without prop drilling

Provide / Inject

Provide data from ancestor components to any descendant, avoiding prop drilling.

Basic Usage

<!-- Provider.vue -->
<script setup lang="ts">
import { provide, ref } from 'vue'

const message = ref('hello')
provide('message', message)
</script>
<!-- DeepChild.vue (any level deep) -->
<script setup lang="ts">
import { inject } from 'vue'

const message = inject('message')
</script>

Typing with InjectionKey

Use InjectionKey for type safety between provider and injector:

// keys.ts
import type { InjectionKey, Ref } from 'vue'

export const messageKey = Symbol() as InjectionKey<Ref<string>>
export const countKey = Symbol() as InjectionKey<number>
<!-- Provider.vue -->
<script setup lang="ts">
import { provide, ref } from 'vue'
import { messageKey } from './keys'

const message = ref('hello')
provide(messageKey, message)
</script>
<!-- Injector.vue -->
<script setup lang="ts">
import { inject } from 'vue'
import { messageKey } from './keys'

const message = inject(messageKey) // Ref<string> | undefined
</script>

Default Values

// Simple default
const value = inject('message', 'default value')

// Factory function (for expensive defaults)
const value = inject('key', () => new ExpensiveClass(), true)
//                                                       ^ treat as factory

App-Level Provide

Available to all components:

// main.ts
import { createApp } from 'vue'

const app = createApp(App)
app.provide('globalConfig', { theme: 'dark' })

Reactive Provide/Inject

Provide reactive values for automatic updates:

<!-- Provider.vue -->
<script setup lang="ts">
import { provide, ref } from 'vue'

const count = ref(0)
provide('count', count)
</script>

The injected value maintains reactivity connection.

Mutations Best Practice

Keep mutations in the provider, expose update functions:

<!-- Provider.vue -->
<script setup lang="ts">
import { provide, ref, readonly } from 'vue'

const location = ref('North Pole')

function updateLocation(newLocation: string) {
  location.value = newLocation
}

provide('location', {
  location: readonly(location), // Prevent direct mutation
  updateLocation
})
</script>
<!-- Injector.vue -->
<script setup lang="ts">
import { inject } from 'vue'

const { location, updateLocation } = inject('location')!
</script>

<template>
  <button @click="updateLocation('South Pole')">
    {{ location }}
  </button>
</template>

Using Symbol Keys

Recommended for libraries and large apps to avoid collisions:

// keys.ts
export const myKey = Symbol('myKey')

// provider
provide(myKey, value)

// injector
inject(myKey)

Type Helpers

// String key with explicit type
const foo = inject<string>('foo')
//    ^? string | undefined

// With default (removes undefined)
const foo = inject<string>('foo', 'default')
//    ^? string

// Force non-undefined (use when certain it's provided)
const foo = inject('foo') as string