如何修复“Illuminate\Support\Collection::get(), 0passed in /AMPPS/www/lsapp/vendor/laravel/framework/src/Illuminate/Support/Traits/ForwardsCalls.php”答案

【问题标题】：How to fix"Illuminate\Support\Collection::get(), 0passed in /AMPPS/www/lsapp/vendor/laravel/framework/src/Illuminate/Support/Traits/ForwardsCalls.php"如何修复“Illuminate\Support\Collection::get(), 0passed in /AMPPS/www/lsapp/vendor/laravel/framework/src/Illuminate/Support/Traits/ForwardsCalls.php”
【发布时间】：2019-11-01 15:50:11
【问题描述】：

为了对搜索栏进行编程，我创建了一个 GET 方法并添加了一个新控制器，用于获取相关数据并将其与视图一起返回。

    //This is the form in the view named "index.blade.php"

    {!! Form::open(['action' => 'SearchesController@search', 'method' => 'GET']) !!}   
        <form class="form-inline md-form mr-auto mb-4">

            {{Form::text('search', '', ['class'=>'form-control', 'placeholder'=>'Search Anything'])}}

            <button class="btn aqua-gradient btn-rounded btn-sm my-0" type="submit">Search</button>

       </form>
    {!! Form::close() !!}

    //---------------------------------------------------------

    //This is in the "web.php"

    Route::get('/posts/search', 'SearchesController@search');

    //---------------------------------------------------------

    //The following code is the controller named "SearchesController.php"

    <?php

    namespace App\Http\Controllers;

    use Illuminate\Http\Request;

    use Illuminate\Support\Facades\Storage;
    use App\Post;
    use DB;

    use Illuminate\Support\Facades\Auth;

    class SearchesController extends Controller
    {
        public function search(Request $request)
        {
            $this->validate($request, [
                 'search' => 'required',
            ]);

            $search = metaphone($request->input('search'));


            $posts = Post::where('sounds_like','LIKE',"%{$search}%")
                ->orderBy('title', 'desc')
                ->paginate(10)
                ->get();

            return view('posts.index')->with('posts',$posts);
        }
    }

我期望一个视图的输出包含视图返回的所有数据，但却得到了错误消息：

“函数 Illuminate\Support\Collection::get() 的参数太少，在 /Applications/AMPPS/www/lsapp/vendor/laravel/framework/src/Illuminate/Support/Traits/ForwardsCalls.php 中传递了 0第 23 行，预计至少有 1 行”

【问题讨论】：

标签： laravel

【解决方案1】：

如果您使用的是paginate()，则不需要get()。 Paginate 也将执行查询并创建一个集合，get() 方法将作为此 get() 的实例执行，并且需要 key 参数。所以你可以删除它：

public function search(Request $request)
{
    // ...


    $posts = Post::where('sounds_like','LIKE','%'. $search . '%')
        ->orderBy('title', 'desc')
        ->paginate(10);

    return view('posts.index')->with('posts',$posts);
}

与错误无关，但你也有一个form inside a form。选择一个并删除另一个：

{!! Form::open(['action' => 'SearchesController@search', 'method' => 'GET', 'class'=>'form-inline md-form mr-auto mb-4']) !!} 

        {{Form::text('search', '', ['class'=>'form-control', 'placeholder'=>'Search Anything'])}}

        <button class="btn aqua-gradient btn-rounded btn-sm my-0" type="submit">Search</button>

{!! Form::close() !!}

【讨论】：