title: Vuetify v-select get item index
body: <p>is there a way to get the item-value by not using the v-model in v-select...
  Here is my code.</p>
  
  <pre><code>&lt;v-flex xl4 lg4 md4 sm6 xs12 class="pa-2" v-for="(question, i) in questions" :key="i"&gt;
          &lt;v-select
              :label="question.name"
              :items="question.answers"
              item-value="id"
              item-text="name"
              @change="addAnswer(i)"
              required
            &gt;&lt;/v-select&gt;
    &lt;/v-flex&gt;
  </code></pre>
  
  <p>I can't used a <code>v-model</code> since it is a loop. I can passed the <code>i</code> in the loop for the question but how about the item-value?</p>
  
  <p>Methods:</p>
  
  <pre><code>addAnswer(i){
  
          this.questionAnswer.push({
            questionId: i,
            answerId: 'this should be answer Id'
          })
          console.log(this.questionAnswer)
  
    }
  </code></pre>
  
  <p>If you have any idea how to do this... It would be a great help. Thanks.</p>