title: Datepicker in vuetify with validators
body: <p>I need to create a new component that only have a datepicker with his validators. This component is generic because I need to use in more components easily. I need that when you click into the datepicker and you don't pick any date show a red validation like this:</p>
  <p><a href="https://i.stack.imgur.com/INaNK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/INaNK.png" alt="enter image description here" /></a></p>
  <p>and then:</p>
  <p><a href="https://i.stack.imgur.com/nHQpa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nHQpa.png" alt="enter image description here" /></a></p>
  <p>If you pick any date, this validation should disappear.</p>
  <p>I had thinked in this form:</p>
  <pre><code>&lt;ValidationObserver v-slot=&quot;{ handleSubmit, invalid }&quot; ref=&quot;form&quot;&gt;
  &lt;v-form @submit.prevent=&quot;handleSubmit(submit)&quot;&gt;
  
      &lt;ValidationProvider ref=&quot;form&quot; :name=&quot;nombre&quot; :rules=&quot;rules&quot; v-slot=&quot;{ errors }&quot;&gt;
          &lt;v-menu v-model=&quot;dialogOpen&quot; :close-on-content-click=&quot;false&quot; :nudge-right=&quot;40&quot; transition=&quot;scale-transition&quot;
              offset-y min-width=&quot;auto&quot;&gt;
              &lt;template v-slot:activator=&quot;{ on, attrs }&quot;&gt;
                  &lt;v-text-field :error-messages=&quot;errors&quot; v-model=&quot;value&quot; :label=&quot;label&quot; prepend-icon=&quot;mdi-calendar&quot; v-bind=&quot;attrs&quot; v-on=&quot;on&quot;&gt;
                  &lt;/v-text-field&gt;
              &lt;/template&gt;
              &lt;v-date-picker required v-model=&quot;value&quot; @input=&quot;dialogOpen = false&quot; @change=&quot;changed&quot;
                  @keydown=&quot;checkValidate&quot;&gt;&lt;/v-date-picker&gt;
          &lt;/v-menu&gt;
      &lt;/ValidationProvider&gt;
  
  &lt;/v-form&gt;
  </code></pre>
  
  <p>But this doesn't work. Someone can share me another example or solution for this thing?</p>
  <p>Thanks!</p>