Yii2 kartik grid export all columns - yii

Question

I am using kartik grid and want to export all columns present in my table.
Problem is that i want to show only few columns in grid but download all columns in csv file.
Is it possible?
My code
<?php
$gridColumns = [
['class' => 'kartik\grid\SerialColumn'],
[
'class' => 'kartik\grid\EditableColumn',
'attribute' => 'Name',
'vAlign'=>'middle',
'headerOptions'=>['class'=>'kv-sticky-column'],
'contentOptions'=>['class'=>'kv-sticky-column'],
'editableOptions'=>['header'=>'Name', 'size'=>'255'],
'format'=>'text',
],
[
'attribute' => 'Description',
'vAlign'=>'middle',
'headerOptions'=>['class'=>'kv-sticky-column'],
'contentOptions'=>['class'=>'kv-sticky-column'],
'format'=>'text',
],
['class' => 'kartik\grid\DataColumn',
'attribute' => 'image',
'format' => 'html',
'value' => function($model, $key, $index, $column) {
return Html::img('http://localhost/demo/basic_demo/web/www/img/'.$model->image, ['class' => 'abc','width'=>70,'height'=>70]);
},
],
[
'class'=>'kartik\grid\BooleanColumn',
'attribute'=>'Status',
'vAlign'=>'middle',
],
[
'class' => 'kartik\grid\ActionColumn',
'dropdown' => true,
'vAlign'=>'middle',
'viewOptions'=>['title'=>'viewMsg', 'data-toggle'=>'tooltip'],
'updateOptions'=>['title'=>'updateMsg', 'data-toggle'=>'tooltip'],
'deleteOptions'=>['title'=>'deleteMsg', 'data-toggle'=>'tooltip'],
],
[
'class' => '\kartik\grid\ExpandRowColumn',
'header' => '',
'value' => function ($model, $key, $index) {
return GridView::ROW_COLLAPSED;
},
'detailUrl' =>Url::to(['expenses/viewdetail']),
],
];
echo GridView::widget([
'dataProvider'=> $dataProvider,
'filterModel' => $searchModel,
'columns' => $gridColumns,
'autoXlFormat'=>true,
'responsive'=>true,
'hover'=>true,
'condensed'=>true,
'floatHeader'=>true,
'bordered'=>true,
'toolbar'=>['{export}',
'{toggleData}',],
'showPageSummary'=>true,
'panel'=>[
'heading'=>'<h3 class="panel-title"><i class="glyphicon glyphicon-globe"></i> '. Html::encode($this->title).'</h3>',
'type'=>'primary',
'before'=>Html::a('<i class="glyphicon glyphicon-plus"></i>Create Expenses', ['create'], ['class' => 'btn btn-primary']),
'showFooter'=>false
],
'pjax'=>true,
'export'=>[
'fontAwesome'=>true,
'showConfirmAlert'=>false,
'target'=>GridView::TARGET_BLANK,
],
]);
?>

Answer 1

You can do like this in your gird column list add all column and set 'hidden' => true property which you don't want to show in grid-view but this column comes in your csv when you export csv. suppose for example here i am showing you for one column you can implement for this thing all columns. check below example code.
[
'attribute' => 'Description',
'vAlign'=>'middle',
'headerOptions'=>['class'=>'kv-sticky-column'],
'contentOptions'=>['class'=>'kv-sticky-column'],
'hidden' => true,
'format'=>'text',
],
now what happen description column will not display in gird view but it is present in exported file. i hope it is helpful for you.

Answer 2

On columns you my add attribute hiddenFromExport => true
For example:
'columns' => [
[
'attribute' => 'inn',
'format' => 'text',
'hiddenFromExport' => true,
],
],

Answer 3

It's best you pass a different array with the full grid columns rather than just the normal $gridColumns used on the web page. To keep it tidy, I have two functions in my $searchModel, one for grid columns and another for export columns. Then when setting your export menu, just call the function that returns your columns:
ExportMenu::widget([
'dataProvider' => $dataProvider,
'columns' => $searchModel->getExportColumns(),
...
]);
In your search model:
public function getGridColumns(){
return [
// page columns
];
public function getExportColumns(){
return [
// export columns
];