/**
  * Remove the specified resource from storage.
  *
  * @param  int $id
  * @return Response
  */
 public function destroy($id)
 {
     if (!$id) {
         return Redirect::route('stocks.index')->with('error', 'Please provide Stock id');
     }
     $stock = Stocks::find($id);
     $product_id = $stock->product_id;
     if (empty($stock)) {
         return Redirect::route('stocks.index')->with('error', 'Stock not found');
     }
     $sales = SalesItems::where('stock_id', '=', $id)->count();
     if ($sales) {
         return Redirect::route('stocks.index')->with('error', 'Stock cannot be delete, since this stock already has sale entry');
     }
     Stocks::destroy($id);
     Products::updateStock($product_id);
     return Redirect::route('stocks.index')->with('success', 'Stock deleted successfully');
 }