CakePhp和AngularJS的采摘日期：未显示占位符

Question

我使用cakephp和angularjs来挑选日期，它工作正常。但占位符未显示在输入框中：

<div
    ng-controller="DatepickerDemoCtrl"
    class="form-group form-inline appt_form-date"
    ng-init="setmaildate = ' '"
    id="sched_mail"
>
    <?php
    echo $this->Form->input('EmailerFrontend.date', array(
        'placeholder' => 'Date',
        'label' => false,
        'type' => 'text',
        'ng-model' => 'setmaildate',
        'datepicker-popup' => "{{formats[5]}}",
        'is-open' => "opened",
        'min-date' => "minDate",
        'max-date' => "maxDate",
        'datepicker-options' => "dateOptions",
        'date-disabled' => "disabled(date, mode)",
        'ng-required' => "true" ,
        'close-text' => "Close",
        'ng-click' => 'open($event)',
        'class' => 'form-control',
        'div' => false
    ));
    ?>
</div>