improve event deletion and event registration cancelation

common/modules/event/views/event/index.php

@@ -153,6 +153,9 @@ $indexTableTemplateButtons[] = '{reserve-card}';
                             'aria-label' => Yii::t('yii', 'Register'),
                             'data-pjax' => '0',
                         ];
+                        if ( isset($model['event_deleted_at']) ){
+                            return "";
+                        }
                         return Html::a('<span class="glyphicon glyphicon-user"></span>', $url, $options);
                     },
 //                    'equipment-types-assignment' => function ($url, $model, $key) {