Wagtail (Django CMS) 如何在 wagtail 中添加单个图像，简单的尝试以 "OperationalError no such column: gallery_gallerysubpage.cover_id" 结束

Question

我的问题很简单，我只是不知道如何将单个图像添加为页面缩图。这是我的页面模型（我试过 ImageChooserPanel reference 所示）：

class GallerySubpage(Page):
    intro = models.CharField(max_length=250)
    body = RichTextField(blank=True)

    # THIS IS TAKEN FROM DOCS
    cover = models.ForeignKey(
        'wagtailimages.Image',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+'
    )

    # This returns some dummy for a while. I want to replace this with some field that contain single Image
    def main_image(self):
        gallery_item = self.gallery_images.first()
        if gallery_item:
            return gallery_item.image
        else:
            return None

    search_fields = Page.search_fields + [
        index.SearchField('intro'),
        index.SearchField('body'),
    ]

    content_panels = Page.content_panels + [
        FieldPanel('intro'),
        FieldPanel('body', classname="full"),
        InlinePanel('gallery_images', label = "Images that will be displayed on this page"),

        # THIS IS TAKEN FROM DOCS
        ImageChooserPanel('cover'),

    ]

当我运行代码时出现错误：

OperationalError at /gallery/galerry132/
no such column: gallery_gallerysubpage.cover_id

Answer 1

如果在添加cover字段后没有运行./manage.py makemigrations和./manage.py migrate就会出现上述错误。

Answer 2

更改模型后，重新运行以下命令使其生效： - python manage.py makemigration - python manage.py 迁移 - python manage.py 运行服务器

Wagtail (Django CMS) 如何在 wagtail 中添加单个图像，简单的尝试以 "OperationalError no such column: gallery_gallerysubpage.cover_id" 结束

Wagtail (Django CMS) how to add single image in wagtail, simple attempt ends with "OperationalError no such column: gallery_gallerysubpage.cover_id"

django

model

image

wagtail