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

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