add column description to questionnaire table

backend/modules/questionnaire/views/questionnaire/_form.php

@@ -46,6 +46,8 @@ use yii\widgets\ActiveForm;
             ]
         ]) ?>
 
+    <?= $form->field($model, 'description')->textInput(['maxlength' => true]) ?>
+
     <div class="form-group">
         <?= Html::submitButton('Создать', ['class' => 'btn btn-success']) ?>
     </div>

backend/modules/questionnaire/views/questionnaire/index.php

@@ -49,6 +49,7 @@ $this->params['breadcrumbs'][] = $this->title;
                     return TimeHelper::limitTime($model->time_limit);
                 }
             ],
+            'description',
             ['class' => 'yii\grid\ActionColumn'],
         ],
     ]); ?>

backend/modules/questionnaire/views/questionnaire/view.php

@@ -54,6 +54,7 @@ YiiAsset::register($this);
                 'format' => 'raw',
                 'value' => TimeHelper::limitTime($model->time_limit),
             ],
+            'description',
         ],
     ]) ?>