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<?php namespace Maatwebsite\Excel\Mixins; use Illuminate\Contracts\Support\Arrayable; use Illuminate\Support\Collection; use Maatwebsite\Excel\Concerns\Exportable; use Maatwebsite\Excel\Concerns\FromCollection; use Maatwebsite\Excel\Concerns\WithHeadings; use Maatwebsite\Excel\Sheet; class DownloadCollectionMixin { /** * @return callable */ public function downloadExcel() { return function (string $fileName, string $writerType = null, $withHeadings = false, array $responseHeaders = []) { $export = new class($this, $withHeadings) implements FromCollection, WithHeadings { use Exportable; /** * @var bool */ private $withHeadings; /** * @var Collection */ private $collection; /** * @param Collection $collection * @param bool $withHeading */ public function __construct(Collection $collection, bool $withHeading = false) { $this->collection = $collection->toBase(); $this->withHeadings = $withHeading; } /** * @return Collection */ public function collection() { return $this->collection; } /** * @return array */ public function headings(): array { if (!$this->withHeadings) { return []; } $firstRow = $this->collection->first(); if ($firstRow instanceof Arrayable || \is_object($firstRow)) { return array_keys(Sheet::mapArraybleRow($firstRow)); } return $this->collection->collapse()->keys()->all(); } }; return $export->download($fileName, $writerType, $responseHeaders); }; } }
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