import store from '@/store'

export default {
 hasPermission: {
// inserted：被綁定元素插入父節(jié)點時調(diào)用 (僅保證父節(jié)點存在，但不一定已被插入文檔中)。
  inserted(el, binding, vnode) {
    const { value } = binding
    const all_permission = "*:*:*";
    const permissions = store.getters && store.getters.permissions

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

      const hasPermissions = permissions.some(permission => {
        return all_permission === permission || permissionFlag.includes(permission)
      })

      if (!hasPermissions) {
        el.parentNode && el.parentNode.removeChild(el)
        // 或者：el.style.display = 'none'
      }
    } else {
      throw new Error(`請設(shè)置操作權(quán)限標簽值`)
    }
  }
 }
}

// 多個指令的使用
Vue.use((vue) => {
  ((requireContext) => {
    const arr = requireContext.keys().map(requireContext)
      ; (arr || []).forEach((directive) => {
        directive = directive.__esModule && directive.default ? directive.default : directive
        Object.keys(directive).forEach((key) => {
          vue.directive(key, directive[key])
        })
      })
  })(require.context('./directives', false, /^\.\/.*\.js$/))
})

<el-button type="primary" v-has-permission="'page1:add'">新增</el-button>