关于Yii2.0 日历插件DatePicker 的问题 [ 2.0 版本 ]

是composer安装的，命名空间没有错，但是提示 类找不到，好纳闷

是用的composer安装的 不知道为啥

<?php
namespace backend\assets;
use yii\base\Exception;
use yii\web\AssetBundle as BaseAdminLteAsset;

/**

• AdminLte AssetBundle

• @since 0.1
  */
  class DatepickerAsset extends BaseAdminLteAsset
  {
  public $sourcePath = '@vendor/almasaeed2010/adminlte/plugins';
  public $css = [

   'datepicker/datepicker3.css',
  

  ];
  public $js = [

   'datepicker/bootstrap-datepicker.js'
  

  ];
  public $depends = [

   'dmstr\web\AdminLteAsset',
  

  ];

  /**

  • @var string|bool Choose skin color, eg. 'skin-blue' or set false to disable skin loading
  • @see https://almsaeedstudio.com/themes/AdminLTE/documentation/index.html#layout
    */
    public $language = 'zh_CN';

  /**

  • @inheritdoc
    /
    public function init()
    {
    // Append skin color file if specified
    /if ($this->skin) {

     if (('_all-skins' !== $this->skin) && (strpos($this->skin, 'skin-') !== 0)) {
         throw new Exception('Invalid skin specified');
     }
    
     //$this->css[] = sprintf('css/skins/%s.min.css', $this->skin);
     $this->css[] = sprintf('css/skins/%s.min.css', $this->skin);
    

    }*/
    $this->js[] = 'datepicker/locales/bootstrap-datepicker.zh-CN.js';
    parent::init();
    }
    }
    asset/DatepickerAsset.php

view.php

<?php

use yii\helpers\Html;
use yii\widgets\ActiveForm;
use dosamigos\datepicker\DatePicker;

common\assets\CkeditorAsset::register($this);
$this->registerJsFile('/js/news.js',['depends'=>'common\assets\DatePickerAsset']);
$this->registerJsFile('/js/news-editor.js',['depends'=>'common\assets\DatePickerAsset']);
/ @var $this yii\web\View /
/ @var $model backend\models\News /
/ @var $form yii\widgets\ActiveForm /
?>

<?php $form = ActiveForm::begin(); ?> <?= $form->field($model, 'title')->textInput(['maxlength' => true]) ?> <?= $form->field($model, 'description')->textInput(['maxlength' => true]) ?> <?= $form->field($model, 'keywords')->textInput(['maxlength' => true]) ?> <?= $form->field($model, 'typeId')->dropDownList(\yii\helpers\ArrayHelper::map($configModel['NewsType'],'id','name')); ?> <?= $form->field($model, 'seen')->textInput(['value' => '0']) ?> <?= $form->field($model, 'createTime')->textInput(['id' => 'datepicker'])?> <?= $form->field($model, 'isHot')->textInput(['value' => '0']) ?> <?= $form->field($model, 'isTop')->textInput(['value' => '0']) ?> <?= $form->field($model, 'sort')->textInput(['value' => '0']) ?> <?= $form->field($model, 'status')->textInput(['value' => '0']) ?> <?= $form->field($model, 'content')->textarea(['id' => 'editor1']) ?> <?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update', ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?> <?php ActiveForm::end(); ?>

web/asset/js
$('#datepicker').datepicker({

format:'yyyy-m-dd',
maxDate: "+0d" ,

autoclose: true,
});