发送数据后刷新ng-model

Question

我的问题是发送数据后如何刷新mg-model？我试图这样做，但没有用。任何建议，请。

<div class="modal-body">
  <h3>Nom :{{msg}} </h3><input type="text" ng-model="msg.payload.data1" id="name" name="Nom" placeholder="Nom" size="77"><br><br>
  <h3>Prenom : </h3><input type="text" ng-model="msg.payload.data2" id="prenom" name="Prenom" placeholder="Prenom"  size="77">  <br><br>
  <button id="myBtn_f" ng-click="send(msg);msg={} " ng-disabled="(msg.payload.data1 == null) || (msg.payload.data2 == null)">Enregistrer</button>
</div>