Question

我遇到的问题是由于在我第一次将input设置值时正在运行的v-model事件，该数据是通过API加载的；我知道为什么表单被设置为脏的（因为它正在被更改），但是这在另一个我有的组件中引起了问题，该组件检查$v.$anyDirty标志是否设置为true，如果是，则创建一个弹出窗口说“您确定要离开吗”，但是在数据加载后调用$v.reset()无效。

Vue.use(vuelidate.default);
const { required } = window.validators;
new Vue({
  el: "#app",
  data: {
    todos: [],
    todo: ""
  },
  async created() {
    var data = await axios.get("https://jsonplaceholder.typicode.com/todos");
    this.todos = data.data.map(d => d.id);
    this.todo = this.todos[0];
    this.$v.$reset()
  },
  validations() {
    return {
      todo: { required }
    };
  }
});

<link href="https://unpkg.com/bootstrap-vue@2.0.0-rc.11/dist/bootstrap-vue.css" rel="stylesheet"/>
<link href="https://unpkg.com/bootstrap@4.1.3/dist/css/bootstrap.min.css" rel="stylesheet"/>

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<script src="https://unpkg.com/bootstrap-vue@2.0.0-rc.11/dist/bootstrap-vue.min.js"></script>
<script src="https://unpkg.com/vuelidate@0.7.4/dist/validators.min.js"></script>
<script src="https://unpkg.com/vuelidate@0.7.4/dist/vuelidate.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.18.0/axios.js"></script>



<div id='app'>
  <div class="row">
    <div class="col-md-4">
      <b-form-select v-model="$v.todo.$model" :options="todos"></b-form-select>
    </div>
    <div class="col-md-8">
      <code>
        $anyDirty: {{$v.$anyDirty}}
      </code>
    </div>
  </div>
</div>

Answer 1

问题在于$v.reset()在vue渲染之前运行，因此输入事件发生在之后，因此堆栈跟踪看起来像这样

加载>设置值>重置验证>渲染>输入事件

您需要将重置置于Vue.nextTick内，然后它将生效，因为它将执行更改为

加载>设置值>渲染>输入事件>重置验证

Vue.use(vuelidate.default);
const {
  required
} = window.validators;
new Vue({
  el: "#app",
  data: {
    todos: [],
    todo: ""
  },
  async created() {
    var data = await axios.get("https://jsonplaceholder.typicode.com/todos");
    this.todos = data.data.map(d => d.id);
    this.todo = this.todos[0];
    Vue.nextTick(() => {
      this.$v.$reset()
    })
  },
  validations() {
    return {
      todo: {
        required
      }
    };
  }
});

<link href="https://unpkg.com/bootstrap-vue@2.0.0-rc.11/dist/bootstrap-vue.css" rel="stylesheet" />
<link href="https://unpkg.com/bootstrap@4.1.3/dist/css/bootstrap.min.css" rel="stylesheet" />

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<script src="https://unpkg.com/bootstrap-vue@2.0.0-rc.11/dist/bootstrap-vue.min.js"></script>
<script src="https://unpkg.com/vuelidate@0.7.4/dist/validators.min.js"></script>
<script src="https://unpkg.com/vuelidate@0.7.4/dist/vuelidate.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.18.0/axios.js"></script>



<div id='app'>
  <div class="row">
    <div class="col-md-4">
      <b-form-select v-model="$v.todo.$model" :options="todos"></b-form-select>
    </div>
    <div class="col-md-8">
      <code>
        $anyDirty: {{$v.$anyDirty}}
      </code>
    </div>
  </div>
</div>

请注意，您也可以使用this.$nextTick来致电Vue.nextTick

Vue引导程序B形式选择在加载时将vuelidate的$ anyDirty设置为true

1 个答案: