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

4.2 KiB

Raw Blame History

title, impact, impactDescription, type, tags

title

impact

impactDescription

type

Check for Null/Undefined Before Accessing Properties in v-if

Impact: MEDIUM - Accessing properties on null or undefined objects in v-if conditions causes "Cannot read property of undefined" runtime errors. This commonly occurs when data is loaded asynchronously or when optional object properties are accessed without null checks.

Task Checklist

Always check that an object exists before accessing its properties
Use optional chaining (?.) in Vue 3 templates for cleaner null checks
Consider using computed properties for complex conditional logic
Handle loading states explicitly rather than relying on undefined checks

Incorrect:

<!-- WRONG: Accessing property before checking object exists -->
<template>
  <div v-if="user.isAdmin">
    Admin Panel
  </div>
  <!-- Error if user is null/undefined: Cannot read property 'isAdmin' of undefined -->
</template>

<!-- WRONG: Nested property access without checks -->
<template>
  <div v-if="order.customer.address.city === 'NYC'">
    Local delivery available
  </div>
  <!-- Error if any level is undefined -->
</template>

<!-- WRONG: Array access without existence check -->
<template>
  <div v-if="items[0].name === 'Featured'">
    {{ items[0].description }}
  </div>
  <!-- Error if items is empty array -->
</template>

Correct:

<!-- CORRECT: Check object exists first with && -->
<template>
  <div v-if="user && user.isAdmin">
    Admin Panel
  </div>
</template>

<!-- CORRECT: Optional chaining (Vue 3) -->
<template>
  <div v-if="user?.isAdmin">
    Admin Panel
  </div>
</template>

<!-- CORRECT: Optional chaining for nested properties -->
<template>
  <div v-if="order?.customer?.address?.city === 'NYC'">
    Local delivery available
  </div>
</template>

<!-- CORRECT: Array length check before access -->
<template>
  <div v-if="items.length > 0 && items[0].name === 'Featured'">
    {{ items[0].description }}
  </div>

  <!-- Or with optional chaining -->
  <div v-if="items?.[0]?.name === 'Featured'">
    {{ items[0].description }}
  </div>
</template>

<!-- CORRECT: Explicit loading state handling -->
<template>
  <div v-if="isLoading">Loading...</div>
  <div v-else-if="error">Error: {{ error.message }}</div>
  <div v-else-if="user">
    <h1>Welcome, {{ user.name }}</h1>
    <div v-if="user.isAdmin">Admin Panel</div>
  </div>
  <div v-else>No user data</div>
</template>

Using Computed Properties for Complex Checks

// CORRECT: Move complex checks to computed properties
<script setup>
import { computed } from 'vue'

const props = defineProps(['user', 'permissions'])

const canAccessAdmin = computed(() => {
  return props.user?.isAdmin &&
         props.permissions?.includes('admin_panel') &&
         !props.user?.isDisabled
})

const userDisplayName = computed(() => {
  return props.user?.profile?.displayName ||
         props.user?.name ||
         'Anonymous'
})
</script>

<template>
  <div v-if="canAccessAdmin">
    Admin Panel
  </div>
  <span>{{ userDisplayName }}</span>
</template>

Common Async Data Pattern

// CORRECT: Handle async data loading properly
<script setup>
import { ref, onMounted } from 'vue'

const user = ref(null)
const isLoading = ref(true)
const error = ref(null)

onMounted(async () => {
  try {
    user.value = await fetchUser()
  } catch (e) {
    error.value = e
  } finally {
    isLoading.value = false
  }
})
</script>

<template>
  <div v-if="isLoading">Loading user...</div>
  <div v-else-if="error">Failed to load user</div>
  <div v-else-if="user">
    <!-- Safe to access user properties here -->
    <h1>{{ user.name }}</h1>
    <p v-if="user.bio">{{ user.bio }}</p>
  </div>
</template>

4.2 KiB Raw Blame History

Check for Null/Undefined Before Accessing Properties in v-if

Task Checklist

Using Computed Properties for Complex Checks

Common Async Data Pattern

Reference

4.2 KiB

Raw Blame History