使用Laravel 4.2在db中搜索

Question

我想从db中搜索和显示特定数据，而我所做的方法不是从数据库中检索数据，如果我打印它只是给出一个空数组。 我的代码如下：

控制器：

public function search() {

        $search = Input::get('search');
        if($search){
            $query = DB::table('volunteer');
            $results = $query ->where('bloodt', 'LIKE', $search) ->get();
            //print_r($results); exit;
            return View::make('search')->with("volunteer",$results);
        }  
}

查看：

{{Form::open(array('method'=>'POST'))}}

<div class="pull-left col-xs-6 col-xs-offset-0">
    {{Form::text('search','',array('placeholder'=>'Search by blood type/zip code/address....','class'=>'form-control','required autofocus'))}}
</div>
<input type="submit" name="search" value="Search" class="btn btn-primary">
<br><br>
{{Form::close()}}

<?php if (isset($results)) { ?>
    @foreach($volunteer as $results)
    <table class="table table-bordered" style="width: 100%; background-color: lightsteelblue">
        <tr>
            <th>Firstname</th>
            <th>Lastname</th>
            <th>IC/Passport no.</th>
            <th>Blood Type</th>
            <th>Address</th>
            <th>Zip Code</th>
            <th>e-mail</th>
            <th>Phone no.</th>
            <th>Status</th>
        </tr>
        <tr>
            <td>{{ $results->fname }}</td>
            <td>{{ $results->lname }}</td>
            <td>{{ $results->ic }}</td>
            <td>{{ $results->bloodt }}</td>
            <td>{{ $results->address }}</td>
            <td>{{ $results->zipcode }}</td>
            <td>{{ $results->email }}</td>
            <td>{{ $results->phone }}</td>
            <td>
                <div class="btn-group" role="group">
                    <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
                        {{ $results->status }}
                        <span class="caret"></span>
                    </button>
                    <ul class="dropdown-menu">
                        <li><a href="#">Eligible</a></li>
                        <li><a href="#">Not Eligible</a></li>
                    </ul>
                </div>
            </td>
        </tr>

    </table>
    @endforeach
    <?php;
} ?>

路线：

Route::post('search', 'HomeController@search');