Vue access control using a custom command instead of v-if

Reference VUE-Element-ADMIN  permission for the libraries

Use Demo (demo.vue)

<template>
  <p>admin组:<span v-permission="['admin']">可看见v-permission="['admin']"</span></p>
  
  <p>editor:<span v-permission="['editor']">可看见v-permission="['editor']"</span></p>
  
  <p>admin editor组:<span v-permission="['admin','editor']">可看见v-permission="['admin','editor']"</span></p>
  
  <p>another组:<span v-permission="['another']">可看见v-permission="['another']"</span></p>
</template>

v-permission instruction code to a global register (main.js)

const permission={
    inserted(el, binding, vnode) {
        const { value } = binding
        const roles = ['editor','admin']
        if (value && value instanceof Array && 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']"`)
        }
    }
}

Vue.directive('permission', permission)

Compared

- v-show (v-show of dom does not hide, change the display the user can see the information not supposed to see)

- v-if (v-if left to delete nodes <! - -> comments)

Easy to maintain, and clear