Javascript 在$error对象中获取$q.reject（）错误消息

我有一个表单，当邮政编码不存在时，我使用ng show来显示或隐藏元素

查看

<input type="text" name="postcode" placeholder="Postcode" ng-model="project.postcode" required integer postcode>    
<span ng-show="form.postcode.$error.postcode">That post code does not exist!</span>

所有这些都适用于常规解析和拒绝，但当我使用“多个”错误代码拒绝时，我希望在form.postcode上的$error对象中对此进行评估

i、 e

此邮政编码已分配多个郊区！

有可能这样做吗？还是我只需要在范围内设置一些东西

谢谢

我已经检查过了，它根本没有使用被拒绝的承诺返回的数据。但是您可以自己调用

$setValidity

：

.then(function(results) {
    scope.postcodetowns = results;
    ctrl.$setValidity('postcode', results.length === 0);
    ctrl.$setValidity('postcode_multiple', results.length > 1);
    def.resolve();
}
return def.promise;

现在，您可以将

form.postcode.$error.postcode\u multiple

与

ngShow

一起使用：

<span ng-show="form.postcode.$error.postcode_multiple">
    This post code has multiple suburbs assigned to it!
</span>

---

您能否发布

邮政编码

指令的代码（无双关语）？

.then(function(results) {
    scope.postcodetowns = results;
    ctrl.$setValidity('postcode', results.length === 0);
    ctrl.$setValidity('postcode_multiple', results.length > 1);
    def.resolve();
}
return def.promise;

<span ng-show="form.postcode.$error.postcode_multiple">
    This post code has multiple suburbs assigned to it!
</span>

<div ng-messages="form.postcode.$error">
    <span ng-message="postcode">That post code does not exist!</span>
    <span ng-message="postcode_multiple">This post code has multiple suburbs assigned to it!</span>
</div>