Tips for personalizing error messages for the "required" field by utilizing a dictionary feature on VeeValidate in Vue.Js

I am trying to update the error message that appears when an input field with the "cpf" rule is left empty (meaning it does not meet the "required" rule).

I believe using the "dictionary method" with custom messages is the solution, but I am struggling to implement it successfully.

The current issue I am facing is that despite having the code set up as shown below, the error message being displayed is still the default pt_br message for "required" fields. My goal is to show the specific message from the dictionary dict stated as "Please fill in the cpf".

In my main.js file, this is the code I have:

import Vue from 'vue';
import App from './App.vue';
import './core/extensions';

new Vue({
  render: h => h(App),
}).$mount('#app');

And in the extensions.js file:

 import Vue from 'vue';
 import VeeValidate, { Validator } from 'vee-validate';
 import ptBR from 'vee-validate/dist/locale/pt_BR';

 const dict = {
     messages: ptBR.messages,
     pt_BR: {
      custom: {
         cpf: {
           required: 'Please fill in the cpf',
         },
       }
     },
   };

Vue.use(VeeValidate);

Validator.localize({ pt_BR: dict })

Validator.extend('cpf', (val) => {
     return false //just to test
});

Here's a simple example of App.vue:

<template>
    <div id="app">
        <input type="text" v-validate="required|cpf">      
    </div>
</template>

I am currently using vee-validate 2.1.5 and vue 2.5.17

Answer №1

It appears that the validator is utilizing the cpf as a field name rather than as a validation rule in this scenario.

I am uncertain as to why the cpf rule would trigger the required rule, but if you assign a name or data-vv-name attribute to the input like so:

<input type="text" data-vv-name="cpf" v-validate="required">

and provide the following parameters to the localize function:

Validator.localize('pt_BR', {
  custom: {
    cpf: {
      required: 'Please fill out the CPF'
    }
  }
})

This will show your localized message when the field is left empty.

Below is an example of a specific error message for a field (replace 'en' with 'pt_BR' if necessary)

VeeValidate.Validator.localize('en', {
  custom: {
    cpf: {
      required: 'Please fill out the CPF'
    }
  }
})

Vue.use(VeeValidate)

new Vue({
  el: '#app'
})
p {
  color:red;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<script src="https://unpkg.com/vee-validate@latest"></script>
<div id="app">
  <input type="text" data-vv-name="cpf" v-validate="'required'">
  <p>{{ errors.first('cpf') }}</p>
</div>

Answer №2

I have encountered an issue where the custom error message does not seem to be functioning properly with the ValidateProvider component.

Answer №3

Discovering a simple method with vee-validate for personalized error messages: 1- Begin by installing the vee-validate package using this command

npm install vee-validate --save

2- Import and incorporate the following code in your main.js file

import { ValidationProvider } from 'vee-validate/dist/vee-validate.full.esm';
import { ValidationObserver } from 'vee-validate';
Vue.component('ValidationProvider',ValidationProvider);
Vue.component('ValidationObserver',ValidationObserver);

3- Proceed to your component and create an input field:

 <ValidationObserver v-slot="{ handleSubmit }">
                            <form @submit.prevent="handleSubmit(additem)">
                                <ValidationProvider name="Item" rules="required" v-slot="{ errors }">
                                    <div class="row">
                                        <label>Item</label>
                                        <textarea rows="5" id="item" data-vv-as="item1"  class="form-control" v-model="item"></textarea>
                                        <span>{{ errors[0] }}</span>
                                    </div>
                                </ValidationProvider>

                                <div class="row mt-3">
                                    <button class="btn btn-sm btn-primary" type="submit" >Save Item</button>
                                </div>
                            </form>
                        </ValidationObserver>

4- Don't forget to import localization when importing ValidationProvider as shown below in your Vue component within the script section.

import {localize} from "vee-validate/dist/vee-validate.full.esm";
localize({

    en: {
        fields: {
            Item: {
                required: "Please enter some title",
                // alpha: "please enter alphabets only"
            }
        }
    }
});
    localize("en");

Answer №4

To learn more about creating custom messages for specific form fields, visit the resource on Field-specific Custom Messages in the official documentation.

In order to customize messages for different languages, you'll need to supply a custom dictionary for each language you wish to modify.

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