如何在 Laravel 中搜索完成之前隐藏数据库中的结果？

Question

我正在搜索该网站，以便用户可以从数据库中搜索结果

一切正常，但在用户完成搜索之前如何隐藏结果？

这是控制器：

class SearchController extends Controller
{
public function search(Request $request){
    // Get the search value from the request
    $search = $request->input('search');
    

    // Search in the title and body columns from the posts table
    $classes = Classes::query()
        ->where('course_name', 'LIKE', "%{$search}%")
        ->orWhere('course_lecturer', 'LIKE', "%{$search}%")
        ->get();


    // Return the search view with the results compacted
    return view('search', compact('classes'));
}
}

这是视图：

<div class="container">
<h1>Search</h1>
<form action="{{ route('search') }}" method="GET">
    <input style="font-family: Frutiger" dir="rtl" type="text" placeholder="search" name="search" required/>
    <button style="font-family: Frutiger" class="col-md-12 btn btn-primary" type="submit">Search</button>
</form>  
</div>
@if($classes->isNotEmpty())
@foreach ($classes as $classes)
    <div class="post-list text-center">
        <p>{{ $classes->course_name }}</p>
        <p>{{ $classes->course_lecturer }}</p>
        <a target="_blank" href="{{ $classes->file_link }}"><img src="{{ $classes->file_link }}" href="{{ $classes->file_link }}"  width="150px" height="300px"></a>
        <hr>
        
    </div>
@endforeach
@else 
<div>
    <h2 class="text-center">No posts found</h2>
</div>
@endif

所以我的问题是视图在用户搜索之前显示所有结果，我希望在搜索完成之前隐藏结果

如何实现？

Answer 1

这是因为在第一次加载页面时，search 为 null，所以您将返回所有数据库！

你可以这样修复它：

class SearchController extends Controller
{
public function search(Request $request){
    // Get the search value from the request
    $search = $request->input('search');
    $classes = [];
    if($search) {
    // Search in the title and body columns from the posts table
        $classes = Classes::query()
            ->where('course_name', 'LIKE', "%{$search}%")
            ->orWhere('course_lecturer', 'LIKE', "%{$search}%")
            ->get();
    }

    // Return the search view with the results compacted
    return view('search', compact('classes'));
}
}