如何爲yii2擴展kartik fileInput小部件

Question

Im新到Yii2，我需要修改Yii2中kartiks FileInput小部件的registerAssetBundle（）函數。我意識到這是在供應商文件夾中，所以我想做一個覆蓋。僅供參考，這是使用高級模板。任何人都可以告訴我爲什麼我不能重寫或我做錯了什麼？ Yii只是沒有選擇這個文件/不嗆/沒有錯誤/沒有，只是用它的快樂方式，並呈現我的頁面正常。

在我有一個名爲FileInputOveride.php文件共同\組件：

namespace common\components; 
    use Yii; 
    use \kartik\file\FileInput; 

    class FileInputOveride extends \kartik\file\FileInput 
    { 
    //...override function, ...do stuff... 

編輯-Heres一些代碼：

這裏是在_form.php這個頂部是用聲明的FileInput

use yii\helpers\Html; 
use yii\widgets\ActiveForm; 
use yii\helpers\Url; 
use yii\bootstrap\Modal; 
use kartik\widgets\FileInput; <-- if I take this out, it errors that it cant find ::FileInput 
use common\components\FileInputOveride; <--this has no effect 

下面這條線是某些查看HTML，直到我們到達的FileInput場，看起來像這樣：

<?= 
       //fileinput widget for single file upload 
       $form->field($model, 'cover_file')->widget(FileInput::classname(), 
        [ 
        'options'=> 
         [ 
          'accept'=>'image/*', 
          'multiple' => false, 
          'id'=>'cover_file', 

         ], 
        'pluginOptions' => 
         [ 
          'uploadUrl' => $upload_url, 
          'maxFileCount' => 1, 
          'allowedFileExtensions' => ['jpg', 'png','jpeg'], 
          'initialPreviewShowUpload' => false, 
          'uploadAsync'=> false, 
          'autoReplace'=>true, 

         ], 
        'pluginEvents' => 
         [ 
          'fileuploaded'=>"function(event, data, previewId, index){ 
           $.get('./call-image?id=".$model->id."', function(response) { 
             $('#thumb-container-image').html(response); 
           }); 
          }", 

         ], 
       ])->label(false); 
      ?> 

想用我自己的FileInputOveride.php覆蓋registerAssetBundle（）函數在這個卡爾蒂克FileInput.php：

namespace kartik\file; 

use Yii; 
use yii\helpers\ArrayHelper; 
use yii\helpers\Html; 
use kartik\base\InputWidget; 
use kartik\base\TranslationTrait; 

/** 
* Wrapper for the Bootstrap FileInput JQuery Plugin by Krajee. The FileInput widget is styled for Bootstrap 3.x with 
* ability to multiple file selection and preview, format button styles and inputs. Runs on all modern browsers 
* supporting HTML5 File Inputs and File Processing API. For browser versions IE9 and below, this widget will 
* gracefully degrade to normal HTML file input. 
* 
* @see http://plugins.krajee.com/bootstrap-fileinput 
* @see https://github.com/kartik-v/bootstrap-fileinput 
* 
* @author Kartik Visweswaran <kartikv2@gmail.com> 
* @since 2.0 
* @see http://twitter.github.com/typeahead.js/examples 
*/ 
class FileInput extends InputWidget 
{ 

，這裏是整個FileInputOveride.php文件：

namespace common\components; 
use Yii; 

class FileInputOveride extends \kartik\file\FileInput 
{ 
    /** 
    * Registers the asset bundle and locale 
    */ 
    public function registerAssetBundle() 
    { 
     $view = $this->getView(); 
     if ($this->resizeImages) { 
      PiExifAsset::register($view); 
      $this->pluginOptions['resizeImage'] = true; 
     } 
     $theme = ArrayHelper::getValue($this->pluginOptions, 'theme'); 
     if (!empty($theme) && in_array($theme, self::$_themes)) { 
      FileInputThemeAsset::register($view)->addTheme($theme); 
     } 
     if ($this->sortThumbs) { 
      SortableAsset::register($view); 
     } 
     if ($this->purifyHtml) { 
      DomPurifyAsset::register($view); 
      $this->pluginOptions['purifyHtml'] = true; 
     } 

//above is the existing code   
//below is the additional code i added to this function 
     $assetsRegistered = FileInputAsset::register($view)->addLanguage($this->language, '', 'js/locales'); 

     //array of pages/paths we dont want to include the asset on 
     $pageArray = ['releases/update']; 

     //array of assets we dont want to use for the above pages 
     $fileArray = ['js/fileinput.js']; 

     //for each page, see if the file(s) specified is/are included, if so, unset them in the assets array 
     foreach($pageArray as $path) 

      if(in_array($path, $pageArray)){ 

      foreach($fileArray as $file){ 

       if(in_array($file,$assetsRegistered->js)){ 
        $key= array_search($file, $assetsRegistered->js); 
        unset($assetsRegistered->js[$key]); 
       } 
      } 
     } 
    } 

} 

另外，我還可以使用語法從其操作中列出屬於操作/視圖的資產。

這樣：

public function actionUpdate(){ 
//show me all the js registered to this page 

謝謝大家！

Answer 1

在你的_form.php文件中使用「FileInputOveride :: classname（）」而不是「FileInput :: classname（）」 - 然後你可以刪除用於卡丁輸入的使用行。當你擴展任何插件時，你必須調用你的插件類名稱，而不是你擴展的插件。