maatwebsite/excel 和 \DB::commit() 的问题；

Question

我正在尝试将一些数据存储在数据库中，并且在我尝试下载并 excel 包含该数据的文件后立即。所以我注意到 excel 包阻止了我的提交，显然它不允许我将数据存储在数据库中。这是我的代码。 - 我正在使用 Laravel 5.5 -"maatwebsite/excel": "~2.1.0",

public function refundTicketAndGenerateExcel($transactions, $table)
{   
    try 
    {   
        \DB::beginTransaction();

            $this->storeRefundData($transactions);
            $response = $this->generateExcel($table);

        \DB::commit();
        return $response;
    } 
    catch (\Exception $e) 
    {   
        \DB::rollback();
        \Log::error($e);
        $result['message'] = $e->getMessage();
        return response()->json($result, 500);
    }
}

public function generateExcel($table)
{   
    Excel::create('Reembolsos', function ($excel) use ($table) {
                    $excel->sheet('Reembolsos', function ($sheet) use ($table) {

                        $FontStyle = array(
                            'font' => array(
                                'name' => 'Arial',
                                'color' => array('rgb' => '000000'),
                                'size' => 11
                            ),
                        );

                        $sheet->loadView($this->path . '.partials.excel', ['table'=>$table]);
                        $sheet->getStyle('A1:K1000')->applyFromArray($FontStyle);
                    });

                })->export('xls');
}

PD：如果我只是评论 \DB::beginTransaction() 和 \DB::commit()，一切正常；另一方面，如果我只是评论 Excel::create 块，一切也都很好；这就是为什么我说 excel 包阻止了我的提交。

提前致谢。

Answer 1

当您调用 export() 时，它会终止您的脚本。老实说，设计相当蹩脚：

protected function _download(Array $headers = [])
{
    $filename = $this->filename;
    $userAgent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '';
    // Just for Microsoft Explore
    if (preg_match('/Trident|Edge/i', $userAgent)) {
        $filename = rawurlencode($filename);
    }
    // Set the headers
    $this->_setHeaders(
        $headers,
        [
            'Content-Type'        => $this->contentType,
            'Content-Disposition' => 'attachment; filename="' . $filename . '.' . $this->ext . '"',
            'Expires'             => 'Mon, 26 Jul 1997 05:00:00 GMT', // Date in the past
            'Last-Modified'       => Carbon::now()->format('D, d M Y H:i:s'),
            'Cache-Control'       => 'cache, must-revalidate',
            'Pragma'              => 'public'
        ]
    );
    // Check if writer isset
    if (!$this->writer)
        throw new LaravelExcelException('[ERROR] No writer was set.');
    // Download
    $this->writer->save('php://output');
    // End the script to prevent corrupted xlsx files
    exit;
}

https://github.com/Maatwebsite/Laravel-Excel/blob/2.1/src/Maatwebsite/Excel/Writers/LaravelExcelWriter.php#L347-L377

通过返回 Excel::create() returns 的编写器对象并删除 ->export() 部分来解决此问题。

$writer = Excel::create(blah blah blah); // no->export() now!
return $writer;

然后在提交后进行导出。

 $writer = $this->generateExcel($table);
 \DB::commit();
 return $writer->export();

maatwebsite/excel 和 \DB::commit() 的问题；

problem with maatwebsite/excel and \DB::commit();

php

export

laravel

maatwebsite-excel