OneToMany / ManyToOne SchemaException

Question

我尝试使用Doctrine2为我的Symfony2应用程序构建一个manyToOne关系。我收到此错误，我不知道原因：

app/console doctrine:schema:create
PHP Deprecated:  Comments starting with '#' are deprecated in /etc/php5/cli/conf.d/mcrypt.ini on line 1 in Unknown on line 0
ATTENTION: This operation should not be executed in an production enviroment.


  [Doctrine\DBAL\Schema\SchemaException]
  There is no column with name 'activityGroup' on table 'activity'.  

这是两个类：http://pastebin.com/Ev7Rwgxr

我认为在Activity类上实际上有一个activityGroup ...那么这个错误试图说什么呢？

谢谢！

Answer 1

我明白了......

uniqueconstraints期望真实的db字段名称为activityGroup_id，而不仅仅是activityGroup。

通过提供JoinColumn，可以确保在DB中调用字段的内容。

因此，一个聪明的解决方案是：

    /**
     * @ORM\Entity
     * @ORM\Table(name="activity",
     *     uniqueConstraints={
     *         @ORM\UniqueConstraint(name="name_idx", columns={"activity_group_id", "name"}),
     *         @ORM\UniqueConstraint(name="sort_idx", columns={"activity_group_id", "sort_id"})
     *     }
     * )
     */
    class Activity
    {
        // ...

        /**
         * @ORM\ManyToOne(targetEntity="SeduceMe\SiteBundle\Entity\ActivityGroup", inversedBy="activities")
         * @ORM\JoinColumn(name="activity_group_id", referencedColumnName="id")
         */

        protected $activityGroup;
        //...
    }