Yii2 display data from phpexcel in view before saving to database - yii2

Question

I am still on the process of learning Yii 2 framework. I was able to create a form that uploads excel file then save to database using phpexcel. I want to enhance it in a way that the data from the uploaded excel will be displayed on a table in view so the user can check the data if they are the same with the excel file. After checking, the user will have two options whether CANCEL or CONTINUE.
Here is my controller method to read file and save:
public function importExcel($model, $readFile, $dir)
{
try {
$readFileType = \PHPExcel_IOFactory::identify($readFile);
$objReader = \PHPExcel_IOFactory::createReader($readFileType);
$objPHPExcel = $objReader->load($readFile);
}
catch(Exception $e) {
die('Error reading data from excel file.');
}
$sheet = $objPHPExcel->getSheet(0);
$highestRow = $sheet->getHighestRow();
$highestCol = $sheet->getHighestColumn();
for($row = 9; $row <= $highestRow; $row++) {
$rowData = $sheet->rangeToArray('A'. $row . ':' . $highestCol . $row, NULL, TRUE, FALSE);
$objPHPExcel->getActiveSheet()
->getStyle('A'. $row . ':' . $highestCol . $row)
->getNumberFormat()->setFormatCode('0000');
// ->setFormatCode( \PHPExcel_Style_NumberFormat::FORMAT_TEXT );
if($row == 9) {
continue;
}
$document = new Document();
$document->type_id = ($rowData[0][0] == 'Ordinance' ? 1 : 2);
$document->no = $rowData[0][1];
$document->series = $rowData[0][2];
$document->title = $rowData[0][3];
$document->author = $rowData[0][5];
$document->date_approved = date('Y-m-d', strtotime($rowData[0][8].' '.$rowData[0][9].' '.$rowData[0][10]));
$document->region_c = $model->region_c;
$document->province_c = $model->province_c;
$document->citymun_c = $model->citymun_c;
$document->catParent = 1;
$document->category_id = 1;
$document->file_url = $dir . '/unzip/' . $rowData[0][13];
$document->save();
}
}

Answer 1

I did this and it worked.
try {
$readFileType = \PHPExcel_IOFactory::identify($readFile);
$objReader = \PHPExcel_IOFactory::createReader($readFileType);
$objPHPExcel = $objReader->load($readFile);
}
catch(Exception $e) {
die('Error reading data from excel file.');
}
$sheet = $objPHPExcel->getSheet(0);
$highestRow = $sheet->getHighestRow();
$highestCol = $sheet->getHighestColumn();
for($row = 9; $row <= $highestRow; $row++) {
$rowData = $sheet->rangeToArray('A'. $row . ':' . $highestCol . $row, NULL, TRUE, FALSE);
$objPHPExcel->getActiveSheet()
->getStyle('A'. $row . ':' . $highestCol . $row)
->getNumberFormat()->setFormatCode('0000');
if($row == 9) {
continue;
}
$data[] = array(
'type' => $rowData[0][0],
'no' => $rowData[0][1],
'series' => $rowData[0][2],
'title' => $rowData[0][3],
'author' => $rowData[0][5],
'dateapproved' => date('Y-m-d', strtotime($rowData[0][8].' '.$rowData[0][9].' '.$rowData[0][10])),
'file' => $rowData[0][13]
);
}
$dataProvider = new ArrayDataProvider([
'allModels' => $data,
'pagination' => [
'pageSize' => 10,
],
]);
return $this->render('display', [
'dataProvider' => $dataProvider,
]);
}

Answer 2

If your rowData contain the data and is an array of the row read form excel you can do this
$provider = new ArrayDataProvider([
'allModels' => $rowData,
'pagination' => [
'pageSize' => 10,
],
]);
return $this->render('your:view', [
'provider' => $provider,
]);
and in your grdiView
<?= GridView::widget([
'dataProvider' => $provider,
......