Vuelidate：在点击时验证，而不是在触摸字段时验证

Question

我对 vuelidate 有点陌生，一切正常，除了我不知道如何仅在单击按钮 Submit 时运行验证。现在，当您开始提供任何输入时，它会将触摸字段标记为红色，我希望它等待，直到用户想要提交填写的表单。

这是我现在所做的：

Vue.use(window.vuelidate.default)
const { required, minLength, sameAs } = window.validators

new Vue({
	el: "#app",
  data: {
  	user: {
    	login: '',
      password: '',
      repeatedPassword: ''
    }
  },
  validations: {
  	user: {
    	login: {
      	required,
        minLength: minLength(5)
      },
      password: {
    	  required,
        minLength: minLength(8)
      },
      repeatedPassword: {
      	required,
        sameAs: sameAs('password')
      }
    }
  }
})

input {
  border: 1px solid silver;
  border-radius: 4px;
  background: white;
  padding: 5px 10px;
}

.error {
  border-color: red;
  background: #FDD;
}

.error:focus {
  outline-color: #F99;
}

.valid {
  border-color: #5A5;
  background: #EFE;
}

.valid:focus {
  outline-color: #8E8;
}

<script src="https://unpkg.com/vue"></script>
<script src="https://unpkg.com/vuelidate/dist/validators.min.js"></script>
<script src="https://unpkg.com/vuelidate/dist/vuelidate.min.js"></script>
`<div id="app">

  <input type="text" placeholder="login"
    v-model="user.login"
    v-on:input="$v.user.login.$touch"
    v-bind:class="{error: $v.user.login.$error, valid: $v.user.login.$dirty && !$v.user.login.$invalid}">
  <br/>    
  <input type="password" placeholder="password"
    v-model="user.password"
    v-on:input="$v.user.password.$touch"
    v-bind:class="{error: $v.user.password.$error, valid: $v.user.password.$dirty && !$v.user.password.$invalid}">
  <br/>  
  <input type="password" placeholder="repeat password"
    v-model="user.repeatedPassword"
    v-on:input="$v.user.repeatedPassword.$touch"
    v-bind:class="{error: $v.user.repeatedPassword.$error, valid: $v.user.repeatedPassword.$dirty && !$v.user.repeatedPassword.$invalid}"
  >
  <button :disabled="$v.user.$error" @click="$v.user.$touch()">
    Submit!
  </button>
</div>`

Answer 1

这是我使用 VeeValidate 3 所做的：

<validation-observer ref="jobValidation">
 <form>
     <button v-on:click="nextPage()" type="button">Next</button>
 </form>
</validation-observer>

在方法内：

nextPage(): void {                 
    const validation = (this.$refs.jobValidation as any);
    validation.validate().then(() => {                 
    if (validation.flags.invalid) {                           
        // No no no no
        // bonus: show all errors in summary
        validation.$children.forEach((child: any) => {
           child.errors.forEach((error: any) => {
              console.log(error);
           });
           return;
        });
    } else {
        // Yes yes yes
    }
    });  
},

Answer 2

那么在设置验证之后您唯一要做的就是调用一个验证错误的方法。所以请遵循以下：

<button @click="validate">Submit</button>

方法：

validate () {
  this.$v.$touch() //it will validate all fields
  if (!this.$v.$invalid) { //invalid, becomes true when a validations return false
   //you dont have validation error.So do what u want to do here
  }
}

Answer 3

我永远无法真正习惯 Vuelidate 的做事方式，但一般来说，它是这样工作的：https://monterail.github.io/vuelidate/#sub-basic-form

这样设置允许您对每个表单输入/元素进行验证，然后全面检查表单是否“脏”和/或“无效”

form: {
"name": {
"required": false,
"$invalid": true,
"$dirty": false,
"$error": false,
"$pending": false,
"$params": {
  "required": {
    "type": "required"
  }
}
},
"Age": {
  "required": false,
  "$invalid": true,
  "$dirty": false,
  "$error": false,
  "$pending": false,
  "$params": {
    "required": {
      "type": "required"
    }
  }
},
"$invalid": true,  <------- This is what you are after for valid/invalid
"$dirty": false,   <------- This is what you are after to see if the form has been used.
"$error": false,  <-------  This checks both invalid and dirty
"$pending": false,
"$params": {
   "nestedA": null,
   "nestedB": null
}
}

就在实践中使用它而言，一种选择是在提交时调用 validateform 事件。

@click.prevent="validateform"

然后在你的 vue 实例中创建一个 validateform 方法来检查

$v.form.$invalid  or $v.form.$error

然后要么显示错误，要么调用实际的提交方法