class stdClass的對象無法轉換爲Excel表格中的Laravel字符串下載

Question

我試圖通過連接三個表使Laravel中的Excel工作表在Excel工作表中輸出查詢的結果。

型號檢索查詢結果：

<?php 
namespace App; 
use Illuminate\Support\Facades\DB; 
use Illuminate\Database\Eloquent\Model; 

class Product extends Model { 
    protected $table= 'product_master'; 
    protected $primaryKey = 'product_id'; 

    public static function download() { 
     $data=DB::table('product_master') 
      ->join('subcategory_master', 'product_master.subcategory_id', '=', 'subcategory_master.id') 
      ->join('category_master', 'product_master.category_id', '=', 'category_master.id') 
      ->select('product_master.product_id','product_master.product_name','product_master.part_number','category_master.category_name','subcategory_master.subcategory_name','product_master.net_quandity','gross_weight','product_master.product_type','product_master.description') 
      ->where('delete_status','=','0')->get(); 
     return($data); 
    } 
} 

控制器：

<?php 
namespace App\Http\Controllers; 

use Illuminate\Http\Request; 
use App\Http\Controllers\Controller; 
use App\Product; 
use Excel; 

class ExcelController extends Controller { 
    public function downloadExcel(Request $request, $type) { 
     $data = Product::download()->all(); 

     return Excel::create('productmaster', function($excel) use ($data) { 
      $excel->sheet('mySheet', function($sheet) use ($data) { 
       $sheet->fromarray($data); 
      }); 
     })->download($type); 
    } 
} 

路線：

Route::get('downloadExcel/{type}', 'ExcelController@downloadExcel'); 

Answer 1

我的猜測是，您的查詢結果是包含產品對象的數組。對象是關鍵 - >值。但Excel工具預計只有價值。

您的查詢結果：

[['id'=>12, 'name'=>'Fidget Spinner'], ['id'=>13, 'name'=>'Shampoo'], ...] 

它應該是什麼：

[[12,'Fidget Spinner'], [13, 'Shampoo'], ...] 

試着這樣做：

$data= Product::download()->all(); 
foreach($data as $k => $v){ 
    $data[$k] = array_values($v->getAttributes()); 
}