Question

我是新手。我正在尝试返回一个视图，当我去（例如选择id）/ home / 1但我得到以下错误：

ErrorException（E_ERROR）从空值创建默认对象（查看：D：\ Michael .. \ resources \ views \ home.blade.php）

这是我的路线

Route::get('/', function () {
    return view('auth.login');
});

Auth::routes();

Route::get('/home', 'HomeController@index')->name('home');

Route::get('/home/{team_id}', 'HomeController@materialID');

这是我的控制器

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Team;

class HomeController extends Controller
{
    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('auth');
    }

    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $code = \App\Team::where('team_name',"Coding")->get();
        $design = \App\Team::where('team_name',"Design")->get();
        $qa = \App\Team::where('team_name',"Quality Assurance")->get();
        $ana = \App\Team::where('team_name',"Analytics")->get();
        return view('home',compact('code','design','qa','ana'));
    }

    public function materialID($team_id)
    {
        $material = Team::find($team_id);
        return view('material', compact('material')); 
    }
}

这就是我在我的刀片中称呼它的方式

<a href="{{ url('home',$material->team_id = '1')}}">
     <h3>{{$code[0]->team_name}}</h3>
     <p style="padding-right: 35px">{{$code[0]->team_description}}</p>
</a>

我不知道如何解决它。

Answer 1

你应该试试这个：

<a href="{{ url('home','1')}}">
     <h3>{{$code[0]->team_name}}</h3>
     <p style="padding-right: 35px">{{$code[0]->team_description}}</p>
</a>

Answer 2

将团队ID作为参数传递给网址：

<a href="{{ url('home',['team_id'=>$material->team_id])}}">
</a>

ErrorException（E_ERROR）从空值创建默认对象（查看：D：\

2 个答案: