我已关注文档maatwebsite版本 3.1，当导出为 Excel 时，我正在努力将所有问题选择映射到带有问题的行中。 这是我在 App\Exports\QuestionExcel.php 中所做的操作:
<?php
namespace App\Exports;
use App\Question as Question;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\FromQuery;
use Maatwebsite\Excel\Concerns\WithHeadings;
use Maatwebsite\Excel\Concerns\Exportable;
use Maatwebsite\Excel\Concerns\WithMapping;
class QuestionExcel implements FromCollection, WithHeadings, WithMapping
{
use Exportable;
/*
Question $question
*/
private $i = 1;
public function collection()
{
return Question::with('level','questionType','questionChoices')->get();
}
public function map($question): array
{
// $question
return [
$this->i++,
$question->description,
$question->questionType->name,
$question->level->name,
$question->duration,
$question->questionChoices->map(function ($choice){
return $choice->label;
}),
];
}
public function headings(): array
{
return [
'No',
'Question',
'Type',
'Level',
'Duration (s)',
];
}
}
在App\Http\Controllers\ExcelController.php
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Maatwebsite\Excel\Excel;
use App\Exports\QuestionExcel;
use App\Level as Level;
class ExcelController extends Controller
{
private $excel;
public function __construct(Excel $excel)
{
$this->excel = $excel;
}
public function export_questions($level_id){
$level = Level::find($level_id);
$level_name = str_replace(' ', '_', $level->name);
return (new QuestionExcel)->download($level_name.'_question_exports.xlsx');
}
}
请有人帮助我得到这样的结果吗？ Expected result
最佳答案
最后，我通过使用 From View 找到了解决方案
在应用\Exports\QuestionExcel.php
<?php
namespace App\Exports;
use App\Question as Question;
use Illuminate\Contracts\View\View;
use Maatwebsite\Excel\Concerns\FromView;
use Maatwebsite\Excel\Concerns\ShouldAutoSize;
// for applying style sheet
use Maatwebsite\Excel\Concerns\WithEvents;
use Maatwebsite\Excel\Events\AfterSheet;
Use \Maatwebsite\Excel\Sheet;
class QuestionExcel implements FromView, WithEvents, ShouldAutoSize
{
// use Exportable;
/*
Question $question
*/
public function __construct($level_id)
{
$this->level_id = $level_id;
}
public function view(): View
{
$questions = Question::where('level_id',$this->level_id)->with(['level','questionType','questionChoices'])->withCount('questionChoices');
return view('excels.question_exports', [
'questions' => $questions->get(),
'option_column' => $questions->orderBy('question_choices_count','DESC')->first()
// option_column, will return the largest number of question choices so we can create dynamic header in table
]);
}
}
在views\excels.question_exports.blade.php中
<html>
<head>
</head>
<body>
<table>
<tr>
<th rowspan="2">No</th>
<th rowspan="2">Question</th>
<th rowspan="2">Type</th>
<th rowspan="2">Level</th>
<th rowspan="2">Duration (s)</th>
@for($i=1; $i<= $option_column->question_choices_count; $i++)
<th colspan="3">Option {{ $i}}</th>
@endfor
</tr>
<tr>
@for($i=1; $i<= $option_column->question_choices_count; $i++)
<th>Answer</th>
<th>Set correct</th>
<th>Explanations</th>
@endfor
</tr>
@foreach($questions as $index => $question)
<tr>
<td>{{ ($index+1) }}</td>
<td>{{ $question->description }}</td>
<td>{{ $question->questionType->name }}</td>
<td>{{ $question->level->name }}</td>
<td>{{ $question->duration }}</td>
@foreach($question->questionChoices as $choice)
<td>{{ $choice->label }}</td>
<td>{{ $choice->is_correct?1:0 }}</td>
<td>{{ $choice->choice_explaination }}</td>
@endforeach
</tr>
@endforeach
</table>
</body>
</html>
在App\Http\Controllers\ExcelController.php
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Maatwebsite\Excel\Excel;
use App\Exports\QuestionExcel;
use App\Level as Level;
class ExcelController extends Controller
{
private $excel;
public function __construct(Excel $excel)
{
$this->excel = $excel;
}
public function export_questions($level_id){
$level_name = Level::find($level_id)->name;
return \Excel::download(new QuestionExcel($level_id), str_replace(" ","_",$level_name)."_question_exports.xlsx");
}
}
关于php - 如何使用 Laravel excel 3.1 将一对多关系映射为一行，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/53605445/