- Добавлена передача ActiveDataProvider в таблицу файлов

common/modules/analyticsSchool/forms/LessonForm.php

 <?php
+use \yii\data\ActiveDataProvider;
 
 return [
     'activeForm' => [
@@ -24,7 +25,7 @@ return [
             'type' => 'textarea',
             'class' => 'form-control'
         ],
-        Yii::$app->controller->renderPartial('_files', ['model' => $this->model]),
+        Yii::$app->controller->renderPartial('_files', ['model' => $this->model, 'dataProvider' => new ActiveDataProvider(['query' => \common\modules\analyticsSchool\models\AnalyticsSchoolLessonFile::find()])]),
     ],
     'buttons' => [
         'submit' => ['type' => 'submit', 'value' => 'Cохранить']