Question

我如何在另一个称为资源的代码段中使用类别代码段？我想按类别过滤资源列表，并且类别是其自己的摘录。尝试创建资源时出现此错误：

AttributeError at /admin/snippets/home/resource/add/
'ForwardManyToOneDescriptor' object has no attribute 'rel'

这是我的代码：

class Resource(models.Model):
    """Snippet for Resources"""

    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    resource_name = models.CharField(max_length=128, blank=False, null=True)
    phone_number = models.CharField(max_length=12, blank=True, null=True)
    website = models.URLField(blank=True, null=True)
    info = RichTextField(blank=True, null=True)
    category = models.ForeignKey('ResourceCategory', on_delete=models.CASCADE, null=True, blank=True)

    panels = [
        MultiFieldPanel(
            [
                FieldPanel("resource_name"),
                FieldPanel("phone_number"),
            ],
            heading="Resource information"
        ),
        MultiFieldPanel(
            [
                FieldPanel('website')
            ],
            heading="Links"
        ),
        MultiFieldPanel(
            [
                FieldPanel('info')
            ],
            heading="Info"
        ),
        MultiFieldPanel(
            [
                InlinePanel("category", label="Category")
            ]
        )
    ]

    def __str__(self):
        """String representation of this class"""
        return self.resource_name

    class Meta:
        verbose_name = "Resource"
        verbose_name_plural = "Resources"

register_snippet(Resource)

class ResourceCategory(models.Model):
    """Snippet for Resources"""

    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    category_name = models.CharField(max_length=128, blank=False, null=True)

    panels = [
        MultiFieldPanel(
            [
                FieldPanel('category_name')
            ],
            heading="Category"
        )
    ]

    def __str__(self):
        """String representation of this class"""
        return self.category_name

    class Meta:
        verbose_name = "Category"
        verbose_name_plural = "Categories"

register_snippet(ResourceCategory)

Answer 1

category字段应使用FieldPanel('category')，而不是InlinePanel。 InlinePanel用于管理属于该片段的多个子对象，但是这里的Resource仅属于一个ResourceCategory。

（如果您确实打算允许资源属于多个类别，则需要调整模型，以便Resource具有子模型，其中包含ParentalKey到Resource和ForeignKey到ResourceCategory。）

如何添加类别的代码段，在其他代码段中使用

1 个答案: