controller

  public function updateAdditive(Request $request,$id)
    {

        $input=$request->all();
        dd($input);

        $additive = Additive::findOrFail($id) ;
        if ($request->has('file')) {
            $filename = $request->file->getClientOriginalName();
            $request->file->store('public/upload');
            $file = new Food;
            $file->file = $filename;
            //dd($request);
            $input['file']=$file->file;


        return redirect('admin/food-item/');
    }