刀片中未定义变量(无法从其他答案中获得解决方案)

网状物PHP:

Route::group(['prefix' => 'admin', 'middleware' => ['auth' => 'admin']], function ()
{
    Route::get('/', 'AdminController@index');
    Route::get('/ecommerce/addCategory', 'AdminProductController@addCategory');
    Route::get('/ecommerce/showCategory', 'AdminProductController@showCategory');
    Route::post('/ecommerce/saveCategory', 'AdminProductController@saveCategory');
});

控制器:

public function showCategory()
    {
        $sidebar = view('admin.sidebar.sidebar');
        $content = view('admin.ecommerce.showCategory');


        $category = DB::table('categories')->get();

        return view('admin.ecommerce.dashboard', compact('category'))
            ->with('sidebar', $sidebar)
            ->with('content', $content);
    }

刀片:

@foreach($category as $cat)

                        <tr>
                            <td>{{ ++$i }}</td>
                            <td>{{ $cat->categoryName }}</td>
                            <td>{{ $cat->categoryDescription }}</td>
                            <td>{{ $cat->categoryStatus = 1 ? 'Published' : 'Unpublished' }}</td>

                            <td>
                                <a href="#" class="table-action-btn"><i class="md md-edit"></i></a>
                                <a href="#" class="table-action-btn"><i class="md md-close"></i></a>
                            </td>
                        </tr>

                        @endforeach

已成功保存数据,但无法从数据库中提取数据。其实我已经找到了这个相关的所有问题,但没有得到我的答案。请帮帮我。我试了很多次。提前谢谢。