使用 Laravel 将表格下载为 CSV

2022-01-02 00:00:00 csv download php laravel laravel-4

我正在尝试使用 Laravel 作为 csv 文件导出数据库表.我希望用户能够选择 Export as CSV 按钮并将表格下载为 csv 文件.目前我已经得到了这个代码，但它不起作用:

I am trying to export a database table using Laravel as a csv file. I would like the user to be able to select the Export as CSV button and download the table as a csv file. Currently I've gotten this code but It is not working:

我的按钮:

<a href="/all-tweets-csv" class="btn btn-primary">Export as CSV</a>

我的路线:

Route::get('/all-tweets-csv', function(){

    $table = Tweet::all();
    $filename = "tweets.csv";
    $handle = fopen($filename, 'w+');
    fputcsv($handle, array('tweet text', 'screen name', 'name', 'created at'));

    foreach($table as $row) {
        fputcsv($handle, array($row['tweet_text'], $row['screen_name'], $row['name'], $row['created_at']));
    }

    fclose($handle);

    $headers = array(
        'Content-Type' => 'text/csv',
    );

    return Response::download($handle, 'tweets.csv', $headers);
});

它返回给我这个错误:

 The file "Resource id #154" does not exist

我发现这是因为它正在尝试下载一个不存在的文件.是否有另一种方法可以修改我的代码以便下载为 csv.

And I've gathered that it is because it is trying to download a file that does not exist. Is there an alternative way I can go about modifying my code in order to download as a csv.

推荐答案

除了这一行，几乎一切都好:

Almost everything is fine except this line:

return Response::download($handle, 'tweets.csv', $headers);

您应该将此行更改为:

return Response::download($filename, 'tweets.csv', $headers);

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