ElementUI radio组件选中小改造

<template>
 <div id="app">
  <el-radio-group
   v-model="checkedUser"
  >
   <el-radio
    v-for="(user, index) in users"
    :key="index"
    :label="user"
    :value="user"
   >
    {{ `${user.name}(${user.age}岁)` }}
   </el-radio >
  </el-radio-group>

  <h2>当前选中</h2>
  <pre>{{ checkedUser }}</pre>
 </div>
</template>

<script>
import { mapState } from 'vuex'

export default {
 name: 'app',

 data () {
  return {
   checkedUser: {
    name: 'C',
    age: 1,
   },
  }
 },

 computed: {
  ...mapState({
   users: state => state.users
  })
 },
}
</script>

import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)

const store = new Vuex.Store({
 state: {
  users: [
   {
    name: 'A',
    age: 18,
   },
   {
    name: 'B',
    age: 20,
   },
   {
    name: 'C',
    age: 1,
   },
  ]

 },
})

export default store

<template>
 <label
  class="el-radio"
  :class="[
   border && radioSize "
  role="radio"
  :aria-checked="isChecked"
  :aria-disabled="isDisabled"
  :tabindex="tabIndex"
  @keydown.space.stop.prevent="model = isDisabled "
 >
  <span class="el-radio__input"
     :class="{
    'is-disabled': isDisabled,
    'is-checked': isChecked
   }"
  >
   <span class="el-radio__inner"></span>
   <input
    ref="radio"
    class="el-radio__original"
    :value="label"
    type="radio"
    aria-hidden="true"
    v-model="model"
    @focus="focus = true"
    @blur="focus = false"
    @change="handleChange"
    :name="name"
    :disabled="isDisabled"
    tabindex="-1"
   >
  </span>
  <span class="el-radio__label" @keydown.stop>
   <slot></slot>
   <template v-if="!$slots.default">{{label}}</template>
  </span>
 </label>
</template>

<script>
import { isEqual } from 'lodash'
import { Radio } from 'element-ui'

export default {
 name: 'MyRadio',

 // 使用 extemds 选项来扩展官方的 el-radio
 extends: Radio,

 computed: {
  // IMPORTANT: 改写部分，主要是支持 object 类型的值
  isChecked () {
   return isEqual(this.model, this.label)
  },
 },
}
</script>