trntv\filekit\widget\Upload::init PHP Méthode

    public function init()
    {
        parent::init();
        $this->registerMessages();
        if ($this->maxNumberOfFiles > 1 || $this->multiple) {
            $this->multiple = true;
        }
        if ($this->hasModel()) {
            $this->name = $this->name ?: Html::getInputName($this->model, $this->attribute);
            $this->value = $this->value ?: Html::getAttributeValue($this->model, $this->attribute);
        }
        if (!array_key_exists('name', $this->clientOptions)) {
            $this->clientOptions['name'] = $this->name;
        }
        if ($this->multiple && $this->value && !is_array($this->value)) {
            throw new InvalidParamException('In "multiple" mode, value must be an array.');
        }
        if (!array_key_exists('fileparam', $this->url)) {
            $this->url['fileparam'] = $this->getFileInputName();
        }
        if (!$this->files && $this->value) {
            $this->files = $this->multiple ? $this->value : [$this->value];
        }
        $this->clientOptions = ArrayHelper::merge(['url' => Url::to($this->url), 'multiple' => $this->multiple, 'sortable' => $this->sortable, 'maxNumberOfFiles' => $this->maxNumberOfFiles, 'maxFileSize' => $this->maxFileSize, 'minFileSize' => $this->minFileSize, 'acceptFileTypes' => $this->acceptFileTypes, 'files' => $this->files, 'showPreviewFilename' => $this->showPreviewFilename, 'messages' => ['maxNumberOfFiles' => Yii::t($this->messagesCategory, 'Maximum number of files exceeded'), 'acceptFileTypes' => Yii::t($this->messagesCategory, 'File type not allowed'), 'maxFileSize' => Yii::t($this->messagesCategory, 'File is too large'), 'minFileSize' => Yii::t($this->messagesCategory, 'File is too small')]], $this->clientOptions);
    }