php - Laravel错误: Trying to get property of non-object

Question

我正在使用 larvel 4.2 并收到错误:尝试获取非对象的属性

模型:User.php(这是错误行)

foreach(self::with('project')->where('user_id', '=', $user->id)->get() as $row)
    {
    }

模型:User.php(我也有这些)

namespace Project;

class User extends \Eloquent {

protected $table  = 'projects_users';

/**********************************************************
* Methods to use with loaded User
**********************************************************/

/**
* @return User
*/
public function user()
{
    return $this->belongsTo('User', 'user_id')->orderBy('firstname', 'ASC');
}

/**
* @return Project
*/
public function project()
{
    return $this->belongsTo('Project', 'project_id')->orderBy('name', 'ASC');
}

不确定为什么会收到此错误？有什么想法吗？

Answer 1

http://php.net/manual/en/control-structures.foreach.php

The foreach construct provides an easy way to iterate over arrays. foreach works only on arrays and objects, and will issue an error when you try to use it on a variable with a different data type or an uninitialized variable.

您正在尝试迭代错误。您的查询返回一个 bool 值。

首先回显您的查询，看看它返回什么。

从你的模型来看，似乎没有什么问题。