Element: Validate error of multiple select when open form

by Theara Yuom

HTML

<script src="//unpkg.com/vue/dist/vue.js"></script>
<script src="//unpkg.com/[email protected]/lib/index.js"></script>
<div id="app">
  <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="120px" class="demo-ruleForm">
    <el-form-item label="Activity zone" prop="region">
      <el-select v-model="ruleForm.region" multiple placeholder="Activity zone">
        <el-option label="Zone one" value="shanghai"></el-option>
        <el-option label="Zone two" value="beijing"></el-option>
      </el-select>
    </el-form-item>

    <el-form-item>
      <el-button type="primary" @click="submitForm('ruleForm')">Create</el-button>
      <el-button @click="resetForm('ruleForm')">Reset</el-button>
    </el-form-item>
  </el-form>
</div>

SCSS

@import url("//unpkg.com/[email protected]/lib/theme-default/index.css");

Babel + JSX

var Main = {
    data() {
      return {
        ruleForm: {
          region: '',
        },
        rules: {
          region: [
            { required: true, message: 'Please select Activity zone', trigger: 'change' }
          ],
        }
      };
    },
		mounted(){
          this.$nextTick(()=>{
                    this.$refs.ruleForm.resetFields();
                })                
      },
    methods: {
      submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            alert('submit!');
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      resetForm(formName) {
        this.$refs[formName].resetFields();
      }
    }
  }
var Ctor = Vue.extend(Main)
new Ctor().$mount('#app')