public function store(RequestsOfferRequest $request)
    {

            $offer = new Offer($request->all());

            Auth::user()->offer()->save($offer);

            $maxoffer = Auth::user()->maxoffer()
                        ->where('article_id', $request->input('article_id'))
                        ->where('start', $request->input('start'))->first();

   if($maxoffer===null)
    {
      Auth::user()->maxoffer()->create($request->all());
    }
    else
    {
      if($maxoffer->price < $request->input('price'))
      {
        $newOffer = Auth::user()->maxoffer()
                    ->where('id', $maxoffer->id)
                                     ->update(['price'=>$request->input('price')]);
      }
    }

            Alert::success('Offer is succesfully added!', 'Good job!')->persistent("Close");

        return Redirect::back();

    }

public function maxoffer(){
        return $this->hasMany('AppMaxoffer');
    }