Ensuring the accuracy of a single field within a form containing multiple fields is made possible through the utilization of

I am facing an issue with my emailValidation method. Even though I want it to run when

this.$refs.editUserForm.validate('email')
returns true, it always seems to return false, especially when a valid email like
<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="f993989a92b9818083d79a96">[email protected]</a>
is entered. Can someone help me figure out how to properly validate a single field in a form?

<template>
  <v-form ref="editUserForm" :model="user" data-app>
    <v-text-field
      v-model="user.first_name"
      label="First Name"
      :rules="firstNameRules"
      class="required"
      required
    >
    </v-text-field>
    <v-text-field
      v-model="user.email"
      label="Email"
      :rules="emailRules"
      name="email"
      class="required"
      required
      @blur="emailValidation"
    >
    </v-text-field>
  </v-form>
</template>
<script>
export default {
  data: function () {
    return {
      client: {
        first_name: '',
        email: ''
      },
      firstNameRules: [
        value => !!value || 'Please enter a first name'
      ],
      emailRules: [ 
        v => /^\w+([.-]?\w+)*@\w+([.-]?\w+)*(\.\w{2,3})+$/.test(v) || 'E-mail must 
        be valid'
      ]
    };
  },


  methods: {
    emailValidation(){
      if (this.$refs.editUserForm.validate('email')) {
        console.log("Valid")
      }
      else {
        console.log("Not Valid")
      }
    }
  }
};
</script>

Answer №1

One of the issues at hand is that the function validate within the form does not accept a string as input. It will validate the entire form and provide a result, which means even if the email field is valid, it could still return false if other fields are flagged as invalid.

In order to specifically validate just one field, you must assign a ref to that particular field and then call validate() on that specific field's ref.

<v-text-field
  ref="email"
  v-model="user.email"
  label="Email"
  :rules="emailRules"
  name="email"
  class="required"
  required
  @blur="emailValidation"
>
</v-text-field>

The validation process also varies depending on your Vuetify version:

Vuetify 2.x

emailValidation() {
  const valid = this.$refs.email.validate();
  if (valid) {
    console.log('Valid');
  } else {
    console.log('Not Valid');
  }
}

Vuetify 3.x

validate() now returns a promise, requiring the use of async/await

async emailValidation() {
  const valid = await this.$refs.email.validate();
  // The array 'valid' may contain error messages. A length of 0 indicates valid input
  if (valid.length === 0) {
    console.log('Valid');
  } else {
    console.log('Not Valid');
  }
}

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