public function edit($product_id)

    {

        $all_categories = DB::table('tbl_category')->get();

        $all_manufactures = DB::table('tbl_manufacture')->get();

​

        $product =  DB::table('tbl_product')

            ->where('product_id',$product_id)

            ->get()->first();

​

        return View('admin.edit-product')->with([

            'product'=>$product,

            'all_categories'=>$all_categories,

            'all_manufactures'=>$all_manufactures,

            ]);

    }

<select name="dropdown">

    <option value="option1" {{ ($selectedValue == 'option1') ? 'selected' : ''}}>Option 1</option>

    <option value="option2" {{ ($selectedValue == 'option2') ? 'selected' : ''}}>Option 2</option>

    <option value="option3" {{ ($selectedValue == 'option3') ? 'selected' : ''}}>Option 3</option>

</select>