Laravel - 尝试在 ::first() 上获取非对象的属性

好的，我明白了Trying to get property of non-object当我尝试使用从数据库获取数据时$settings = AdminSettings::first();

这是控制器代码

    <?php

namespace App\Http\Controllers\AdminSettings;

use App\AdminSettings\AdminSettings;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;

class AdminSettingsController extends Controller
{
    public function index()
    {
        $settings = AdminSettings::first();

        return view('admins.settings.settings', compact('settings'));
    }
}

这是模态代码

    <?php

namespace App\AdminSettings;

use Illuminate\Database\Eloquent\Model;

class AdminSettings extends Model
{
    protected $table = 'site_settings';
    protected $fillable = [
        'site_title', 'site_url', 'email_from', 'email_to', 'timezone', 'date_format', 'time_format',
    ];
}

在这里我想把site_title into the input but I get Trying to get property of non-object

<div class="form-group">
                        <label for="site_title" class="form-label">Site Title</label>
                        <input type="text" class="form-control" name="site_title" id="site_title" value="{{ $settings->site_title }}"/>
                    </div>

当我尝试dd($settings); i get null

你已经说过表是空的，所以创建设置对象optional https://laravel.com/docs/5.5/helpers#method-optional:

{{ optional($settings)->site_title }}