尝试分配非对象的 属性 - Laravel 5.2

Attempt to assign property of non-object - Laravel 5.2

问题: 将我的 Laravel 4 代码转换为 Laravel 5.2。我正在移动和转换我的观点,无法克服以下错误。

错误: IndexController.php 第 27 行中的错误异常: 尝试分配 属性 of non-object

调试信息:

  1. 在IndexController.php第27行
  2. 在 HandleExceptions->handleError('2', 'Attempt to assign property of non-object', 'C:\Apache24\B2B_Contracts\app\Http\Controllers\IndexController.php', '27', array('numberofpcs' => object(additionalPCs), 'addtpcs' => array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11 ', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30', '31', '32', '33', '34', '35', '36 ', '37', '38', '39', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49', '50', '51', '52', '53', '54', '55', '56', '57', '58', '59', '60', '61 ', '62', '63', '64', '65', '66', '67', '68', '69', '70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '80', '81', '82', '83', '84', '85', '86 ', '87', '88', '89', '90', '91', '92', '93', '94', '95', '96', '97', '98', '99', '100'))) IndexController.php 第 27 行
  3. 在 IndexController->index()

请求:请协助找出错误出现的原因,如果可能的话,请详细解释如何防止错误以及我做错了什么。

注意: 我曾经在 Laravel 4 上收到类似的错误,但我能够刷新迁移并重新设置数据库和所有内容会重新开始工作。这不适用于 Laravel 5 中的此错误。此代码适用于 L4。

尝试: 我已经阅读了很多关于 Google 的文章并尝试了各种项目,例如 php artisan clear-compiled composer dump-autoloadphp artisan optimize 无济于事。我相信错误来自 $numberofpcs = new additionalPCs();但是我无法证实这一点。我还删除了我发送到视图的所有变量,错误仍然存​​在所以它看起来像 $this->layout->content = View::make('index');

IndexController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Library\additionalPCs;
use App\Http\Requests;
use App\Http\Controllers\Controller;
use View;
use App\Models\businesstype;
use App\Models\contractterm;


class IndexController extends BaseController
{
    Protected $layout = 'master';
    /**
     * Display a listing of the resource.
     *
     * @return Response
     */
    public function index()
    {
        /** Wayne - 03-02-2014 - Moved for loop to a method within its own class. */
        $numberofpcs = new additionalPCs();
        $addtpcs=$numberofpcs->display();
        $this->layout->content = View::make('index')->with('addtpcs', $addtpcs)->with('businesstypelist', businesstype::dropdown())->with('contracttermlist',ContractTerm::dropdown());
    }
}

additionalPCs.php

<?php
namespace App\Library;

use App\Library\additionalComputer;

class additionalPCs extends additionalComputer {
    public function display() {
        return $this->displayMenu();    
    }
}

additionalComputer.php

<?php
namespace App\Library;
/** Counts up the Number of Additional PC Options
* and stores them into an array then sends them to the view.
*/
    class additionalComputer {
        protected function displayMenu() {
            $addtpcs= [];
            for ($i=0; $i <= 100; $i++) {
            $addtpcs[$i] = $i;
            }
        return $addtpcs;
        }

    }

BaseController.php - (这只是为了表明我确实有一个用于 IndexController 的 BaseController.php 文件。我'我知道默认情况下 L5 没有。)

<?php
namespace App\Http\Controllers;

class BaseController extends Controller {

    /**
     * Setup the layout used by the controller.
     *
     * @return void
     */
    protected function setupLayout()
    {
        if ( ! is_null($this->layout))
        {
            $this->layout = View::make($this->layout);
        }
    }

}

控制器布局功能已在 Laravel 5 中删除。因此,setupLayout() 方法不会被调用,这意味着您的 layout 属性 将保留为字符串 'master'。因为它只是一个字符串,所以当您执行 $this->layout->content = ... 时,您试图分配一个 non-object.

的 属性

我相信如果您愿意,应该可以将其添加回去。在您的 BaseController 中,您需要将 callAction 方法重写为以前的方式:

public function callAction($method, $parameters)
{
    $this->setupLayout();

    $response = call_user_func_array(array($this, $method), $parameters);

    // If no response is returned from the controller action and a layout is being
    // used we will assume we want to just return the layout view as any nested
    // views were probably bound on this view during this controller actions.

    if (is_null($response) && ! is_null($this->layout)) {
        $response = $this->layout;
    }

    return $response;
}

Patricus 帮助我找到了这个答案,但我想 post 这是因为在我尝试时提供的答案仍然有问题。但是他是对的,因为我不能再使用控制器布局了。

我变了

$this->layout->content = View::make('index')->with('addtpcs', $addtpcs)->with('businesstypelist', businesstype::dropdown())->with('contracttermlist',ContractTerm::dropdown());

return view('index')->with('addtpcs', $addtpcs)->with('businesstypelist', businesstype::dropdown())->with('contracttermlist',ContractTerm::dropdown()); 

这解决了那个问题。