Is it possible to verify the data within a VueJS model? It seems that none of the Vue validators are effective

Question

Is it possible to verify the data within a VueJS model? It seems that none of the Vue validators are effective

Hello there,

It's common knowledge that using Vue-validator with most UI components can be challenging when it comes to validation. I've been utilizing Vue Material Components by @mjanys, which is a fantastic library. The author has included methods to handle validation results such as true/false and messages, but my question is: how can I implement live data validation in the model itself? Hopefully, I have explained myself clearly, but if not, please let me know so I can clarify further.

In addition, I am looking for a way to perform AJAX validation, such as ensuring a user name is unique during registration.

javascript validation vue.js

Answer 1

Answer №1

It may seem straightforward, but there are multiple ways to approach this task. One simple method is to create a validator function that takes the value and validation type as parameters.

I have set up a demonstration in a fiddle. When validating, you can either write custom validation functions or utilize a library like validator.js.

Check out the fiddle here

To summarize, the validate function appears as follows:

  methods: {
    validate: function (value, type) {
        switch (type) {
        case 'age':
            return value > 0
        case 'alpha':
            return validator.isAlpha(value)
        case 'alphanumeric':
            return validator.isAlphaNumeric(value)
        case 'email':
            return validator.isEmail(value)
        default:
            return true
      }
    }
  }

The data structure looks like this:

  data: {
    age: null,
    lastName: '',
    password: '',
    email: ''
  }

Within the component code:

<md-input :value.sync="email" type="email" :valid="validate(email, 'email')">

This setup allows the value passed to the validate function to remain reactive, followed by specifying the type of validation function to execute.

Answer 2

It may seem straightforward, but there are multiple ways to approach this task. One simple method is to create a validator function that takes the value and validation type as parameters.

I have set up a demonstration in a fiddle. When validating, you can either write custom validation functions or utilize a library like validator.js.

Check out the fiddle here

To summarize, the validate function appears as follows:

  methods: {
    validate: function (value, type) {
        switch (type) {
        case 'age':
            return value > 0
        case 'alpha':
            return validator.isAlpha(value)
        case 'alphanumeric':
            return validator.isAlphaNumeric(value)
        case 'email':
            return validator.isEmail(value)
        default:
            return true
      }
    }
  }

The data structure looks like this:

  data: {
    age: null,
    lastName: '',
    password: '',
    email: ''
  }

Within the component code:

<md-input :value.sync="email" type="email" :valid="validate(email, 'email')">

This setup allows the value passed to the validate function to remain reactive, followed by specifying the type of validation function to execute.

Is it possible to verify the data within a VueJS model? It seems that none of the Vue validators are effective

Answer №1

Similar questions

Vue: event triggers malfunctioning and components unresponsive

The HTTP response object in Express does not provide any data in its return

The for loop encountered an uncaught type error when trying to access the .length property

Challenges arise when using node Serialport for writing data

Looking to manipulate the form submit data before it is submitted using the standard submit event and jQuery? Read on to learn how to remove, enhance, or change

Vue 3 Composable console error: Unable to access properties of undefined (specifically 'isError') due to TypeError

Using JQuery for sending POST requests in JavaScript

Retrieving the value of the option that has been selected from a dropdown

Using Paper.js to access and manipulate document.body.style.opacity within a paperscript

Using $q.all function in a controller to fetch data from a service and receiving an

Having issues with the Carousel feature in Bootstrap 5.3.1 while using Angular version 15

Load External HTML content into webpage along with executing JavaScript code and triggering JS functions upon loading

How can I attach an existing event to a dynamically loaded element using AJAX?

"Implementing an Ajax request to loop through a JSON

Is it possible for Angular.js to access a server session attribute?

Ways to resolve the issue of the 'setConfirmDelete' property not being found on type 'JSX.IntrinsicElements' in React.js

Getting the string value from a table row using JavaScript

Cordova - Fixed elements flicker/blink when scrolling

Trigger a click event on a dynamically loaded button

Encountering an "unexpected token" error while utilizing the JSOP API in a ReactJS application