Laravel Excel在导入之前获取总行数

直截了当的问题。使用laravel-excel如何获得电子表格中的总行数？

现在，我有一个工作计数器，可以处理（在CompanyImport文件中）多少行，但是在开始将行添加到数据库之前，我需要总行数。

我要导入的工作表几乎有100万行，因此我正在尝试创建进度条。

我的导入：

public function model(array $row)
{
    # Counter
    ++$this->currentRow;

    # Dont create or validate on empty rows
    # Bad workaround
    # TODO: better solution
    if (!array_filter($row)) {
        return null;
    }

    # Create company
    $company = new Company;
    $company->crn = $row['crn'];
    $company->name = $row['name'];
    $company->email = $row['email'];
    $company->phone = $row['phone'];
    $company->website = (!empty($row['website'])) ? Helper::addScheme($row['website']) : '';
    $company->save();

    # Everything empty.. delete address
    if (!empty($row['country']) || !empty($row['state']) || !empty($row['postal']) || !empty($row['address']) || !empty($row['zip'])) {

        # Create address
        $address = new CompanyAddress;
        $address->company_id = $company->id;
        $address->country = $row['country'];
        $address->state = $row['state'];
        $address->postal = $row['postal'];
        $address->address = $row['address'];
        $address->zip = $row['zip'];
        $address->save();

        # Attach
        $company->addresses()->save($address);

    }

    # Update session counter
    Session::put('importCurrentRow', $this->currentRow);

    return $company;

}

我的控制器：

public function postImport(Import $request)
{
    # Import
    $import = new CompaniesImport;

    # Todo
    # Total number of rows in the sheet to session
    Session::put('importTotalRows');

    #
    Excel::import($import, $request->file('file')->getPathname());

    return response()->json([
        'success' => true
    ]);
}