前端权限验证之自定义指令v-permission-Toy模板网

这篇具有很好参考价值的文章主要介绍了前端权限验证之自定义指令v-permission。希望对大家有所帮助。如果存在错误或未考虑完全的地方，请大家不吝赐教，您也可以点击"举报违法"按钮提交疑问。

在前端处理按钮权限

使用vue自定义指令来v-permission 来控制按钮

详细代码

//index.js文件
import permission from './permission'

const install = function(Vue) {
  Vue.directive('permission', permission)
}

if (window.Vue) {
  window['permission'] = permission
  Vue.use(install); // eslint-disable-line
}

permission.install = install
export default permission

// permission.js文件
import store from '@/store'

function checkPermission(el, binding) {
  const { value } = binding
  const roles = store.getters && store.getters.roles

  if (value && value instanceof Array) {
    if (value.length > 0) {
      const permissionRoles = value

      const hasPermission = roles.some(role => {
        return permissionRoles.includes(role)
      })

      if (!hasPermission) {
        el.parentNode && el.parentNode.removeChild(el)
      }
    }
  } else {
    throw new Error(`need roles! Like v-permission="['admin','editor']"`)
  }
}

export default {
  inserted(el, binding) {
    checkPermission(el, binding)
  },
  update(el, binding) {
    checkPermission(el, binding)
  }
}

在代码中使用

<template>
  <!-- Admin can see this -->
  <el-tag v-permission="['admin']">admin</el-tag>

  <!-- Editor can see this -->
  <el-tag v-permission="['editor']">editor</el-tag>

  <!-- Editor can see this -->
  <el-tag v-permission="['admin','editor']">Both admin or editor can see this</el-tag>
</template>

<script>
// 当然你也可以为了方便使用，将它注册到全局
import permission from '@/directive/permission/index.js' // 权限判断指令
export default{
  directives: { permission }
}
</script>

可以使用全局权限判断函数，用法和指令 v-permission 类似。文章来源地址https://www.toymoban.com/news/detail-632098.html

<template>
  <el-tab-pane v-if="checkPermission(['admin'])" label="Admin">Admin can see this</el-tab-pane>
  <el-tab-pane v-if="checkPermission(['editor'])" label="Editor">Editor can see this</el-tab-pane>
  <el-tab-pane v-if="checkPermission(['admin','editor'])" label="Admin-OR-Editor">Both admin or editor can see this</el-tab-pane>
</template>

<script>
import checkPermission from '@/utils/permission' // 权限判断函数

export default{
   methods: {
    checkPermission
   }
}
</script>