Cannot get data from ActiveDataProvider added by setModels() when batchSize is used after first page

[vatavale]

I have an ActiveDataProvider

$dataProvider = new ActiveDataProvider([
    'query' => $query,
    'pagination' => [
       'pageSize' => 20,
    ]
]);

// Add some data to the dataProvider
$models = $dataProvider->getModels();
foreach ($models as $key => $model) {
   $models[$key]['saleTicket'] = SaleTicket::findOne($model['id']);
}
$dataProvider->setModels($models);

In the view file I successfuly use $model['saleTicket'] data in the Yii-Grid at any page (using pagination).

But in the Yii-Export this additional $model['saleTicket'] available only at the "first page" of the export with batchSize. After first batch I've got only "query" data.

    $exportProvider = clone $dataProvider;
    $exportProvider->pagination = clone $dataProvider->pagination;
    $exportProvider->pagination->page = 0;
    $exportProvider->pagination->pageSize = 50;
    $fullExportMenu = ExportMenu::widget([
        'dataProvider' => $exportProvider,
        'batchSize' => 50,
        'columns' => $gridColumns,
        'clearBuffers' => true,
    ]);

Expected behavior

All data should be available at the export with batchSize.

[chriscpty]

I don't think this is a problem with yii2-export, but rather with your approach - in that foreach loop in the first block, you only set saleTicket for the models initially loaded by $dataProvider, which are the first 20 models (due to its pagination). You never set the values for any models loaded afterwards, so they don't have them.