[Bugfix] 修复创建/更新 Perms 时，名称重复不提示错误信息的问题 (#2272)

apps/perms/templates/perms/asset_permission_create_update.html

@@ -29,6 +29,11 @@
                     </div>
                     <div class="ibox-content">
                         <form method="post" class="form-horizontal" action="" >
+                            {% if form.non_field_errors %}
+                                 <div class="alert alert-danger">
+                                     {{ form.non_field_errors }}
+                                 </div>
+                            {% endif %}
                             {% csrf_token %}
                             <h3>{% trans 'Basic' %}</h3>
                             {% bootstrap_field form.name layout="horizontal" %}