Laravel 7 使用 eloquent 的搜索栏未显示结果

Question

我正在使用 laravel 7 并且正在尝试在我的项目中实施搜索。这是我的控制器搜索功能代码

public function search(Request $request)
{
    $search = Request::get('search');
    $posts = Post::table('posts')
        ->where('title', 'like', '%' . $search . '%')
        ->paginate(5);

    return view('dashboard', ['posts' => $posts]);
}

这是路线

Route::get('/search', 'PostsController@search');

这是我的搜索条码

<form action="/search" method="get">
    <div class="input-group">
        <input type="search" name="search" class="form-control">
        <span class="input-group-prepend">
            <button type="submit" class="btn btn-primary">Search</button>
        </span>
    </div>
</form>

这是仪表板 blade

中的 table

@if(count($posts) > 0)
    <table class="table table-bordered">
        <tr>
            <thead class="table-dark">
            <th>Entry#</th>
            <th>Consignee</th>
            <th>Description</th>
            <th>Uploaded By</th>
            <th>Date Uploaded</th>
            <th>Actions</th>
            <th>Status</th>
            </thead>

        </tr>
        @foreach ($posts as $post)
            <tbody id="myTable" name="myTable">
            <tr>
                <td>{{$post->title}}</td>
                <td>{{$post->consignee}}</a></td>
                <td>{!!$post->body!!}</td>
                <td>{{$post->user->name}}</td>
                <td>{{$post->created_at}}</td>
                <td>
                    <a href="/posts/{{$post->id}}/" class="btn btn-primary">View</a>
                    <button type="button" class="btn btn-danger" data-toggle="modal" href="#deletePost{{$post->id}}">
                        Delete
                    </button>
                </td>
                <td>{{$post->status}}</td>
            </tr>
            @endforeach
            </tbody>
    </table>
    {{$posts->links()}}
@else
    <p> You have no entries</p>
@endif

我的 table 看起来像这样当我按下搜索按钮时，我希望它看起来像这样我不知道搜索未显示任何数据的问题似乎是什么 table。请告诉我如何解决这个问题。谢谢

Answer 1

无需在 eloquent 模型 class 中定义 table('posts') 因为模型总是设置 table 命名其 class 名称（复数形式）。还有一件事，当未设置搜索查询参数时，无需应用 where 条件。如果在搜索变量中分配任何值，则应使用 where 条件。

请照做。

public function search (Request $request)
{
    $search = $request->get('search');
    $posts = Post::when($search, function($sql) use ($search) {
            $sql->where('title', 'like', '%' . $search . '%');
        })
        ->paginate(5);

    return view('dashboard', compact('posts'));
}

Answer 2

Blade 迭代中的主要问题。请将 count($posts) 替换为 $posts->total() 方法。因为 $posts 是分页数据对象而不是数组列表。

@if($posts->total() > 0)
    <table class="table table-bordered">
        <tr>
            <thead class="table-dark">
            <th>Entry#</th>
            <th>Consignee</th>
            <th>Description</th>
            <th>Uploaded By</th>
            <th>Date Uploaded</th>
            <th>Actions</th>
            <th>Status</th>
            </thead>

        </tr>
        <tbody id="myTable" name="myTable">
        @foreach ($posts as $post)
            <tr>
                <td>{{$post->title}}</td>
                <td>{{$post->consignee}}</a></td>
                <td>{!!$post->body!!}</td>
                <td>{{$post->user->name}}</td>
                <td>{{$post->created_at}}</td>
                <td>
                    <a href="/posts/{{$post->id}}/" class="btn btn-primary">View</a>
                    <button type="button" class="btn btn-danger" data-toggle="modal" href="#deletePost{{$post->id}}">
                        Delete
                    </button>
                </td>
                <td>{{$post->status}}</td>
            </tr>
        @endforeach
        </tbody>
    </table>
    {{$posts->links()}}
@else
    <p> You have no entries</p>
@endif

Laravel 7 使用 eloquent 的搜索栏未显示结果

Laravel 7 Search Bar using eloquent not displaying result

php

laravel

eloquent