我有一個小問題，即使沒有搜索鍵也會顯示搜索結果。這是片段。這是觀點：<form action="/search" method="GET"><div class="form-group search-location">    <input type="text" name="cityKey" id="cityKey" value="{{ request()->input('cityKey') }}"           class="form-control" ></div><div class="form-group search-info">    <input type="text" name="key" id="key" value="{{ request()->input('key') }}"           class="form-control" ></div><button type="submit" class="btn btn-primary search-btn"><i class="fas fa-search"></i>    <span>search</span></button>這是控制器：public function search(Request $request){    $cityKey = $request->cityKey;    $key = $request->key;    $doctors = Doctor_list::where('speciality_title', 'LIKE', '%' . $key . '%')->    where('location', 'LIKE', '%' . $cityKey . '%')->    orWhere('doctors_name', 'LIKE', '%' . $key . '%')->    where('location', 'LIKE', '%' . $cityKey . '%')->    orWhere('speciality_type', 'LIKE', '%' . $key . '%')->    where('location', 'LIKE', '%' . $cityKey . '%');//完成查詢并使用分頁或 ->get() 終止查詢 $doctors = $doctors->get();    return view('search', compact('doctors'));}