vuejs2 - Vuelidate how to conditionally disable submit button -


how can conditionally disable submit button of vuelidate form if fields don't meet required criteria?

i tried below :disabled accept word disabled in there.

<form>             <ol>               <li class="inputquestion" v-bind:class="{ 'error': $v.user.username.$error }">                 <label>username:</label>                 <input v-model.trim="user.username" @input="$v.user.username.$touch()" />               </li>               <li class="inputquestion" v-bind:class="{ 'error': $v.user.password.$error }">                 <label>password:</label>                 <input v-model.trim="user.password" @input="$v.user.password.$touch()" />               </li>                <li class="submission">                 <button @click.prevent="submitform" :disabled="$v.form.valid()">sign in</button>               </li>             </ol>           </form>

currently, binding disabled value returned $v.form.valid(), run once when component's template rendered , won't change after point.

from vuelidate documentation, looks provided $invalid property form model which:

indicates state of validation given model. becomes true when of it's child validators specified in options returns falsy value. in case of validation groups, grouped validators considered.

use instead:

<button @click.prevent="submitform" :disabled="$v.form.$invalid">

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