php - 教义2：未定义的索引

Question

当我尝试执行此 DQL 查询时：

SELECT r, s FROM Rule r
JOIN r.splash_page s
WHERE r.active = 1

我想要做的只是加入两个实体，我得到这个错误：

Notice: Undefined index: rules in C:\xampp\htdocs\excap\vendor\doctrine\orm\lib\Doctrine\ORM\Internal\Hydration\ObjectHydrator.php on line 110
Notice: Undefined index: rules in C:\xampp\htdocs\excap\vendor\doctrine\orm\lib\Doctrine\ORM\Internal\Hydration\ObjectHydrator.php on line 428
Notice: Undefined index: rules in C:\xampp\htdocs\excap\vendor\doctrine\orm\lib\Doctrine\ORM\Internal\Hydration\ObjectHydrator.php on line 428
Notice: Undefined index: rules in C:\xampp\htdocs\excap\vendor\doctrine\orm\lib\Doctrine\ORM\Internal\Hydration\ObjectHydrator.php on line 428
Notice: Undefined index: rules in C:\xampp\htdocs\excap\vendor\doctrine\orm\lib\Doctrine\ORM\Internal\Hydration\ObjectHydrator.php on line 428

这些是我的实体文件的一部分，我在其中声明它们之间的关系：

// Rule.php 
/**
 *
 * @var type 
 * @ManyToOne(targetEntity="SplashPage", inversedBy="rules")
 */
protected $splash_page;

---

// SplashPage.php
/**
 *
 * @var type
 * OneToMany(targetEntity="Rule", mappedBy="splash_page") 
 */
protected $rules = null;

知道为什么会这样吗？

Answer 1

您的文档块中有错字$rules：您忘记了@OneToMany 之前的标志

文档块应该是：

/**
 * @OneToMany(targetEntity="Rule", mappedBy="splash_page") 
 */
protected $rules = null;

代替

/**
 * OneToMany(targetEntity="Rule", mappedBy="splash_page") 
 */
protected $rules = null;