Question

我有图像和类别实体。多对多联接表（One-dircetional）。我正在使用Doctirne的ObjectSelect表单元素和多个选项。当我选择一些类别时，Doctrine会成功插入记录。但是当我想要解除它们时 - 它却没有。我是否正确实施了removeCategories方法？可能是我错过了一些小事，但无法弄清楚

 Class Image
    ...
    /**
     * @ORM\ManyToMany(targetEntity="Categories")
     * @ORM\JoinTable(name="images_categories",
     *      joinColumns={@ORM\JoinColumn(name="image_id", referencedColumnName="id")},
     *      inverseJoinColumns={@ORM\JoinColumn(name="category_id", referencedColumnName="id")}
     *      )
     */
    protected $classBobjects;
    ...
    public function getCategories()
    {
        return $this->categories;
    }

    public function addCategories($categories)
    {
        foreach ($categories as $category) {
            $this->categories->add($category);
        }
    }

    public function removeCategories($categories)
    {
        foreach ($categories as $category) {
            $this->categories->remove($category);
        }
    }

在表单字段集中，我有以下元素

 $this->add([
            'name' => 'categories',
            'type' => ObjectSelect::class,
            'attributes' => [
                'multiple' => true,
                'class' => 'chosen-select',
            ],
            'options' => array(
                'object_manager' => $this->getServiceLocator()->get(EntityManager::class),
                'target_class' => Category::class,
                'property' => 'title',
                'is_method' => true,
                'find_method' => array(
                    'name' => 'findAll',
                ),
            ),
        ]);

Answer 1

我找到了。错误在于实现removeCategories（）

$this->categories->remove($category);

should be

$this->categories->removeElement($category);

在删除时，Doctrine ObjectSelect不会删除关系

1 个答案: