Grid view dropdown

Hi i am new in yii2.I was create one new module in my project using kartik widget.The module is working fine.

I has add new dropdown in the grid view. with dropdown search.

The dropdown values are shown but the particular

[

				'attribute' => 'territory_type_id',





			    'label' => 'Territory',





				'filterType' => GridView::FILTER_SELECT2,





				'format' => 'raw',





				'width' => '100px',





				'filter' => ArrayHelper::map ( Territory::find ()->orderBy ( 'territory_name' )->asArray ()->all (), 'territory_type_id', 'territory_name' ),





				'filterWidgetOptions' => [ 





						'options' => [ 





								'placeholder' => 'All...' 





						],





						'pluginOptions' => [ 





								'allowClear' => true 





						] 





				],





				'value' => function ($model, $key, $index, $widget)





				{





					// var_dump($model->user);





					// var_dump($model->customerType);





					if (isset ( $model->territory ) && ! empty ( $model->territory->territory_name ))





						return $model->territory->territory_name;  ===>this place i am not getting corresponding territory name





				} 





		],

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