title: merge 2 values and put in a v-data-table column (Vuetify)
body: <p>Is it possible to merge to values and put into one column in v-data-table?</p>
  
  <p><strong><em>List.vue</em></strong></p>
  
  <pre><code>&lt;template&gt;
    &lt;v-app&gt;
          &lt;v-data-table
            :items="items"
            :headers="headers"
          /&gt;
    &lt;/v-app&gt;
  &lt;/template&gt;
  
  &lt;script&gt;
  export default {
    data() {
      return {
        items: [
           { first_name: "Peter", last_name: "Johnson" },
           { first_name: "Simon", last_name: "Walker" }
         ],
        headers: [
          { text: "first_name", value: "first_name" },
          { text: "last_name", value: "last_name" },
        ]
      };
    }
  };
  &lt;/script&gt;
  </code></pre>
  
  <p>For example I want to put <code>Peter Johnson</code> in <code>Full name</code> column of my v-data-table, While it doesn't have <code>Full name</code> column.</p>