我需要在 Maatwebsite\\Excel 3.1 的新版本中从 laravel 导出 excel。拉维尔

【问题标题】：I need to export excel from laravel in the new version for Maatwebsite\Excel 3.1 . Laravel | Excel我需要在 Maatwebsite\\Excel 3.1 的新版本中从 laravel 导出 excel。拉维尔 | Excel
【发布时间】：2022-11-19 16:17:11
【问题描述】：

嗨，我已经看到 Maatwebsite\Excel 的文档并尝试了解导出文件的新方法.. 现在我有了这个用 Laravel 5.1 制作的项目，我将它升级到 8 并解决了大部分问题，但我坚持使用这个 Maatwebsite\ Excel（包）

如何在新版本中重写这段代码..

          ini_set("memory_limit", "-1");
        $requested = (array) $request->columns_to_export;
        return Excel::create('instances-' . date('Y-m-d'), function ($excel) use ($request, $requested) {
            $excel->sheet('instances', function ($sheet) use ($request, $requested) {
                $columns = [];
                foreach ($requested as $key => $column) {
                    if ($column == 'sku') {
                        $columns[] = 'SKU';
                    }
                    if ($column == 'material_name') {
                        $columns[] = 'Material Nmae';
                    }
                    if ($column == 'new_or_used') {
                        $columns[] = 'NEW OR USED';
                    }
                    if ($column == 'barcode') {
                        $columns[] = 'BARCODE';
                    }
                    if ($column == 'asset_or_sale') {
                        $columns[] = 'ASSEST OR SALE';
                    }
                    if ($column == 'cost') {
                        $columns[] = 'COST';
                    }
                }
                if (!empty($columns)) {
                    $sheet->appendRow($columns);
                }
                $this->data['query']->chunk(500, function ($_500) use ($sheet, $request, $requested) {
                    foreach ($_500 as $o => $INSTANCE) {
                        $row     = [];
                        foreach ($requested as $key => $column) {
                            if ($column == 'sku') {
                                $row[]     = (string) '[' . $INSTANCE->sku . ']';
                            }
                            if ($column == 'material_name') {
                                $row[]     = (string) (empty($INSTANCE->Material) ? '------' : $INSTANCE->Material->{'name_' . app()->getLocale()});
                            }
                            if ($column == 'new_or_used') {
                                $row[]     = (string) ($INSTANCE->is_new == 'Y' ? 'NEW' : 'secondhand');
                            }
                            if ($column == 'barcode') {
                                $row[]     = (string) '[' . $INSTANCE->barcode . ']';
                            }
                            if ($column == 'asset_or_sale') {
                                $row[]     = (string) ($INSTANCE->is_asset == 'Y' ? 'ASSET' : ' not asset');
                            }
                            if ($column == 'cost') {
                                $row[]     = (string) round($INSTANCE->cost_of_good_sold, 2);
                            }
                            if ($column == 'last_stock') {
                                $row[]     = (string) (empty($INSTANCE->LastOrderEntry) ? '------' : ($INSTANCE->LastOrderEntry->Stock ? $INSTANCE->LastOrderEntry->Stock->{'name_' . app()->getLocale()} : '------'));
                            }
                            
                           else {
                                        $row[] = '------';
                                    }
                                }
                            }
                        }
                        if (!empty($row)) {
                            $sheet->appendRow($row);
                        }
                    }
                });
            });
        })
            ->download('xlsx');

【问题讨论】：

标签： excel laravel maatwebsite-excel laravel-upgrade

【解决方案1】：

好的对于那些想知道如何在新版本中重写相同代码的人..我只是使用标题：为此

foreach ($requested as $key => $column) {
                if ($column == 'sku') {
                    $columns[] = 'SKU';
                }
                if ($column == 'material_name') {
                    $columns[] = 'Material Nmae';
                }
                if ($column == 'new_or_used') {
                    $columns[] = 'NEW OR USED';
                }
                if ($column == 'barcode') {
                    $columns[] = 'BARCODE';
                }
                if ($column == 'asset_or_sale') {
                    $columns[] = 'ASSEST OR SALE';
                }
                if ($column == 'cost') {
                    $columns[] = 'COST';
                }
            }

和映射为此

  $this->data['query']->chunk(500, function ($_500) use ($sheet, $request, $requested) {
                foreach ($_500 as $o => $INSTANCE) {
                    $row     = [];
                    foreach ($requested as $key => $column) {
                        if ($column == 'sku') {
                            $row[]     = (string) '[' . $INSTANCE->sku . ']';
                        }
                        if ($column == 'material_name') {
                            $row[]     = (string) (empty($INSTANCE->Material) ? '------' : $INSTANCE->Material->{'name_' . app()->getLocale()});
                        }
                        if ($column == 'new_or_used') {
                            $row[]     = (string) ($INSTANCE->is_new == 'Y' ? 'NEW' : 'secondhand');
                        }
                        if ($column == 'barcode') {
                            $row[]     = (string) '[' . $INSTANCE->barcode . ']';
                        }
                        if ($column == 'asset_or_sale') {
                            $row[]     = (string) ($INSTANCE->is_asset == 'Y' ? 'ASSET' : ' not asset');
                        }
                        if ($column == 'cost') {
                            $row[]     = (string) round($INSTANCE->cost_of_good_sold, 2);
                        }
                        if ($column == 'last_stock') {
                            $row[]     = (string) (empty($INSTANCE->LastOrderEntry) ? '------' : ($INSTANCE->LastOrderEntry->Stock ? $INSTANCE->LastOrderEntry->Stock->{'name_' . app()->getLocale()} : '------'));
                        }
                        
                       else {
                                    $row[] = '------';
                                }
                            }
                        }
                    }
                    if (!empty($row)) {
                        $sheet->appendRow($row);
                    }
                }
            });
        });

所以新代码将是这样的..

class MaterialInventoreyExport implements
FromCollection,
WithMapping,
WithHeadings,
ShouldAutoSize

{ 使用可导出；

protected $data;
protected $requst;

public function __construct($data, $requst)
{
    $this->data = $data;
    $this->requst = $requst;
    // dd($this->data->get()[0]);
}

public function headings(): array
{
    $requested = $this->requst;
    $columns = [];
    foreach ($requested as $key => $column) {
                if ($column == 'sku') {
                    $columns[] = 'SKU';
                }
                if ($column == 'material_name') {
                    $columns[] = 'Material Nmae';
                }
                if ($column == 'new_or_used') {
                    $columns[] = 'NEW OR USED';
                }
                if ($column == 'barcode') {
                    $columns[] = 'BARCODE';
                }
                if ($column == 'asset_or_sale') {
                    $columns[] = 'ASSEST OR SALE';
                }
                if ($column == 'cost') {
                    $columns[] = 'COST';
                }
            }
    return $columns;
}


public function collection()
{
    return $this->data->get();
}

public function map($data): array
{
    $row = null;
    $requested = $this->requst;
    $A = [];


    foreach ($requested as $key => $column) {
        if ($column == 'sku') {
            $A[] = $data->sku;
        }
        if ($column == 'material_name') {
            $A[] = (string) (empty($data->Material) ? '------' : $data->Material->{'name_' . app()->getLocale()});
        }
        if ($column == 'new_or_used') {
            $A[] =  (string) ($data->is_new == 'Y' ? 'new' : 'secondHand');
        }
        if ($column == 'barcode') {
            $A[] =  (string) '[' . $data->barcode . ']';
        }
        if ($column == 'asset_or_sale') {
            $A[] =  (string) ($data->is_asset == 'Y' ? 'asset' : 'Not Asset');
        }
        if ($column == 'cost') {
            $A[] = (string) round($data->cost_of_good_sold, 2);
        }
        if ($column == 'last_stock') {
            $A[] = (string) (empty($data->LastOrderEntry) ? '------' : 
            ($data->LastOrderEntry->Stock ? $data->LastOrderEntry->Stock->{'name_' . app()->getLocale()} : '------'));
        }
    }

    return $A;
}

}

【讨论】：