vue 设置 input 为不可以编辑的实现方法

<div class="edit-item">
      <input type="text" id="group-name" v-model="groupName" class="edit-input" disabled v-show="!isEditGroupName" >
      <input type="text" id="group-name2" v-model="groupName" class="edit-input" ref="groupName"
      @input="changeValue"
      @change="editGroupNameSave(groupInfo.name)" v-show="isEditGroupName" @blur="isEditGroupName = false">
      <span @click="editGroupName"><icon-svg name="icon-kaka-pile" icon-style="edit-ico"></icon-svg></span>
     </div>

export default {
  name: 'RightSideBar',
  props: {
  },
  data () {
   return {
    isEditGroupName: false, // 修改群名称
   }
  },
  puted: {
   // 群名称
   groupName: {
    get () {
     return this.$store.getters.groupSetInfo.name
    },
    set (val) {
     // 使用vuex中的mutations中定义好的方法来改变
     let groupSetInfo = this.$store.getters.groupSetInfo
     let copyMyinfo = Object.assign({}, groupSetInfo)
     copyMyinfo.name = val
     this.$store.dispatch('groupSetInfo', copyMyinfo)
    }
   },
  },
  methods: {
   changeValue () {
    let leng = this.validateTextLength(this.groupName)
    if (leng >= 15) {
     this.$refs.groupName.maxLength = leng
    } else {
     this.$refs.groupName.maxLength = 30
    }
   },
   validateTextLength (value) {
    // 中文、中文标点、全角字符按1长度，英文、英文符号、数字按0.5长度计算
    let Reg = /([\u4e00-\u9fa5]|[\u3000-\u303F]|[\uFF00-\uFF60])/g
    let mat = value.match(Reg)
    let length
    if (mat) {
     length = (mat.length + (value.length - mat.length)  0.5)
     return length
    } else {
     return value.length  0.5
    }
   },
   // 打开编辑
   editGroupName () {
    this.isEditGroupName = true
    let nickNameInput = document.querySelector('#group-name2')
    setTimeout(() => {
     nickNameInput.focus()
    }, 0)
   },
   // 保存群名修改
   editGroupNameSave (data) {

   },

  },
  created () {
 }