Django版本: 2.1.5
Python版本: 3.6.8
Wagtail版本: 2.4
我有一个模板,页脚中有四列链接。我已经建立了以下模型,该模型由BaseSetting
对象和页脚链接对象组成,用于链接的每一列。页脚链接对象将每个ForeignKey
对象都TemplateItems
对象。
@register_setting
class TemplateItems(BaseSetting):
page_banner = models.OneToOneField('wagtailimages.Image', null=True, blank=True, on_delete=models.SET_NULL, related_name='+', help_text='Banner image that shows below menu on pages other than home page')
footer_link_col1_header = models.CharField(max_length=25, default='', verbose_name='Footer Link Column 1 Header')
footer_link_col2_header = models.CharField(max_length=25, blank=True, default='', verbose_name='Footer Link Column 2 Header')
footer_link_col3_header = models.CharField(max_length=25, blank=True, default='', verbose_name='Footer Link Column 3 Header')
footer_link_col4_header = models.CharField(max_length=25, blank=True, default='', verbose_name='Footer Link Column 4 Header')
panels = [
ImageChooserPanel('page_banner'),
MultiFieldPanel([
FieldPanel('footer_link_col1_header'),
InlinePanel('footer_links_col_1', label='Column 1 Links'),
FieldPanel('footer_link_col2_header'),
InlinePanel('footer_links_col_2', label='Column 2 Links'),
FieldPanel('footer_link_col3_header'),
InlinePanel('footer_links_col_3', label='Column 3 Links'),
FieldPanel('footer_link_col4_header'),
InlinePanel('footer_links_col_4', label='Column 4 Links'),
], heading='Footer Links'),
InlinePanel('social_media_links', label="Social Media Links"),
]
class FooterLink(Orderable):
name = models.CharField(max_length=60, default='')
url = models.CharField(max_length=200, default='')
panels = [
FieldRowPanel([
FieldPanel('name'),
FieldPanel('url'),
])
]
class Meta:
abstract = True
def __str__(self):
return f'{self.name}'
class FooterLinkCol1(FooterLink):
template_items = ForeignKey('TemplateItems', related_name='footer_links_col_1', null=True, on_delete=models.SET_NULL)
class FooterLinkCol2(FooterLink):
template_items = ForeignKey('TemplateItems', related_name='footer_links_col_2', null=True, on_delete=models.SET_NULL)
class FooterLinkCol3(FooterLink):
template_items = ForeignKey('TemplateItems', related_name='footer_links_col_3', null=True, on_delete=models.SET_NULL)
class FooterLinkCol4(FooterLink):
template_items = ForeignKey('TemplateItems', related_name='footer_links_col_4', null=True, on_delete=models.SET_NULL)
迁移已成功创建和迁移,但是当我在Wagtail管理员中转到TemplateItems
设置对象以添加页脚链接时,出现以下错误:
/ p / admin / settings / main / templateitems / 2 / 中的KeyError
'footer_links_col_1'
如果我注释掉任何footer_links_col_X项目,那么我收到第一个未注释掉的错误。数据库中没有任何列的现有页脚链接。我想知道问题是否由于ForeignKey
到BaseSetting
对象而来,但是当我在Django admin中声明这些模型(包括每个列链接的内联)时,它显示并允许我可以添加链接。
跟踪:
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/django/core/handlers/exception.py” 在内部 34. response = get_response(request)
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/django/core/handlers/base.py” 在_get_response中 126. response = self.process_exception_by_middleware(e,request)
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/django/core/handlers/base.py” 在_get_response中 124. response = wrapd_callback(request,* callback_args,** callback_kwargs)
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/django/views/decorators/cache.py” 在_wrapped_view_func中 44. response = view_func(request,* args,** kwargs)
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/wagtail/admin/urls/init.py” 在包装 102. return view_func(request,* args,** kwargs)
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/wagtail/admin/decorators.py” 在decorated_view中 34. return view_func(request,* args,** kwargs)
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/wagtail/contrib/settings/views.py” 编辑中 83. instance = instance,form = form,request = request)
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/wagtail/admin/edit_handlers.py” 在bind_to_instance 153. new.on_instance_bound()
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/wagtail/admin/edit_handlers.py” 在on_instance_bound 295. request = self.request))
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/wagtail/admin/edit_handlers.py” 在bind_to_instance 153. new.on_instance_bound()
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/wagtail/admin/edit_handlers.py” 在on_instance_bound 295. request = self.request))
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/wagtail/admin/edit_handlers.py” 在bind_to_instance 153. new.on_instance_bound()
文件 “ /opt/virtualenvs/MY_SITE-a0hNfZxl/lib/python3.6/site-packages/wagtail/admin/edit_handlers.py” 在on_instance_bound 692. self.formset = self.form.formsets [self.relation_name]
异常类型:// admin / settings / main / templateitems / 2 /中的KeyError 异常值:“ footer_links_col_1”
答案 0 :(得分:2)
InlinePanel要求相应的外键为ParentalKey
:
from modelcluster.fields import ParentalKey
class FooterLinkCol1(FooterLink):
template_items = ParentalKey('TemplateItems', related_name='footer_links_col_1', null=True, on_delete=models.SET_NULL)
反过来,ParentalKey要求父模型从ClusterableModel
继承(对于Wagtail Page
模型自动为真):
from modelcluster.models import ClusterableModel
class TemplateItems(BaseSetting, ClusterableModel):
(the readme for django-modelcluster中有一些关于ClusterableModel / ParentalKey动机的解释。)