导出1并将多个导出为.csv（laravel 5.3）

Question

I am working on export and I want to use 2 buttons one is for export only one record and other one is to export multiple records which are selected by checkboxes. I am able to get id's in export method but don't know how to extract data from database and put it in csv file.

Here is my method (which is working for single record export) .

public function getExport($id, Request $request)
{
    $student = Students::find($id);
    $name = $student->name . ".csv";
    $temp = tmpfile();
    $heading = array('Name', 'Group');

    fputcsv($temp, $heading, );

    $values = array($student->name, $student->group);

    fputcsv($temp, $values, );
    fseek($temp, 0);
    echo fread($temp, 1024);
    header('Content-Type: text/csv; charset=utf-8');
    header("Content-Disposition: attachment; filename=" . $name);
    fclose($temp);
    die;
}

link for this method

<a href="/student/getExport/{{ $stuent->id }}">Export It</a>

Route

Route::get('/student/getExport/{id}', 'StudentController@getExport');

Till here it was for one record export .

Now for multiple record export I have a JavaScript function which get the IDs which are neededs to be exported.

Link for Multiples Record Export

<a href="javascript:;" onclick="exportAll();"> Export Students  </a>

javascript method

function exportAll() {
    var students = $('input:checkbox:checked').map(function () {
        return this.value;
    }).get();
    $.ajax({
        type: "GET",
        url: '/student/getExport/' + students,
        data: {
            ids: students
        },
        success: function (result) {
            if (result == 'export') {
                window.location.href = "/smtp";
            }
        }
    });
}

Through this method I'm getting the id's of selected record in getExport method.

Hint This code is working for both single and multiple records delete but don't know how to use it for export as well.

public function destroy($id, Request $request)
{
    if (empty($request->input('ids')))
    {
        $student = Students::findOrFail($id);
        $student->delete();
    }
    else
    {
        $ids = $request->input('ids');
        $Student = Students::whereIn('id', $ids);
        $student->delete();
        session()->flash('msg', trans('Deleted successfully.'));
    }
    return 'delete';
}

Please help me how to achive export for multiple records in same method getExport .

Thanks

Answer 1

You have to use get methord insted of find , and then you have to loop it to append in your csv file.

Here is the code, which I have modified from my previous answer .

public function getExport($id)
{
    $data = Students::whereIn('id', explode(',', $id))
        ->get();
    $filename = "students.csv";
    $handle = fopen($filename, 'w+');
    fputcsv($handle, array('name', 'class', 'section'));
    foreach ($data as $student)
    {
        fputcsv($handle, array($student->name, $student->class, $student->section));
    }
    fclose($handle);

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

    return \Response::download($filename, 'students.csv', $headers);
}