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

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Raw Blame History

title, impact, impactDescription, type, tags

title

impact

impactDescription

type

v-show Does Not Work on template or With v-else

Impact: MEDIUM - v-show cannot be used on <template> elements because templates don't render to the DOM (so there's nothing to apply display: none to). Additionally, v-show does not support v-else. Using these incorrectly results in elements that are always visible or else branches that never work.

Task Checklist

Never use v-show on <template> elements - use v-if instead
Never use v-else with v-show - use separate v-show with negated condition
Remember v-show only works on actual DOM elements
If you need to toggle multiple elements frequently, wrap in a real element (div, span)

Incorrect:

<!-- WRONG: v-show on <template> - silently does nothing -->
<template>
  <template v-show="isVisible">
    <h1>Title</h1>
    <p>Content</p>
  </template>
  <!-- These elements will ALWAYS be visible -->
</template>

<!-- WRONG: v-else with v-show - v-else is not supported -->
<template>
  <div v-show="isLoggedIn">Welcome!</div>
  <div v-else>Please log in</div>  <!-- This v-else won't work -->
</template>

<!-- WRONG: Mixing v-show and v-else expectations -->
<template>
  <span v-show="status === 'success'">Success!</span>
  <span v-else-if="status === 'error'">Error</span>  <!-- Not supported -->
</template>

Correct:

<!-- CORRECT: Use v-if on <template> for multiple elements -->
<template>
  <template v-if="isVisible">
    <h1>Title</h1>
    <p>Content</p>
  </template>
</template>

<!-- CORRECT: Use negated v-show for "else" behavior -->
<template>
  <div v-show="isLoggedIn">Welcome!</div>
  <div v-show="!isLoggedIn">Please log in</div>
</template>

<!-- CORRECT: Wrap in a real element if you need v-show for multiple elements -->
<template>
  <div v-show="isVisible">
    <h1>Title</h1>
    <p>Content</p>
  </div>
</template>

<!-- CORRECT: Use v-if/v-else when you need else branches -->
<template>
  <div v-if="status === 'success'">Success!</div>
  <div v-else-if="status === 'error'">Error</div>
  <div v-else>Loading...</div>
</template>

<!-- CORRECT: Multiple v-show conditions -->
<template>
  <span v-show="status === 'success'">Success!</span>
  <span v-show="status === 'error'">Error</span>
  <span v-show="status === 'loading'">Loading...</span>
</template>

Why This Limitation Exists

// v-show works by toggling the CSS display property
// This requires an actual DOM element

// <template> is a virtual element - it doesn't render to DOM
// It's just a wrapper for Vue's rendering logic

// After compilation:
// <template v-if="show"><p>Hi</p></template>
// Renders as: <p>Hi</p> (when show is true)
// Template itself is gone

// v-show needs a real element to set display: none on
// Since <template> doesn't exist in DOM, v-show has nothing to work with

When to Choose Each

Need	Use
Toggle multiple elements with CSS	Wrap in real element + `v-show`
Toggle multiple elements without wrapper	`<template v-if>`
Need v-else branches	`v-if`/`v-else`
Frequent toggle, single element	`v-show`
Frequent toggle, need "else"	Two `v-show` with negated conditions

Reference

Vue.js Conditional Rendering - v-show

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