Adding tooltip at input, angular js
<p>I have the following Problem: I have an input field, but it only works without the tooltip, with the tooltip I get undefined.</p>

<p>HTML:</p>

<pre><code>&lt;input type="text" ng-model="DiskPermissions" class="col-md-3 m-x-auto" tooltip='Permissions "Disk"'&gt;
&lt;input type="text" ng-model="DiskPermissions" class="col-md-3 m-x-auto"&gt;
</code></pre>

<p>Controller:</p>

<pre><code>var diskToAdd={ size: $scope.DiskSizeGB , mountepoint:'/appl/' + $scope.MountPoint , permissions: $scope.DiskPermissions , options: $scope.DiskOptions , owner: $scope.DiskOwner , filesystemType: $scope.DiskFilesystemtype , diskPart: ''};
</code></pre>