when option uniq is true, display message if you select multiple suggestions

src/Bundle/ChillPersonBundle/Resources/public/vuejs/_components/AddPersons.vue

@@ -71,6 +71,7 @@
                @click.prevent="$emit('addNewPersons', { selected, modal })">
                <i class="fa fa-plus fa-fw"></i>{{ $t('action.add')}}
             </button>
+            {{ $t(checkUniq) }}
          </template>
 
       </modal>
@@ -144,6 +145,12 @@ export default {
       },
       options() {
          return this.options;
+      },
+      checkUniq() {
+         if (this.options.uniq === true && this.selectedCounter > 1) {
+            return "error_only_one_person";
+         }
+         return '';
       }
    },
    methods: {