不能再在鶺鴒中保存頁面

Question

單擊發布或保存草稿時，我收到此錯誤wagtail.core.models.Page.DoesNotExist: Page matching query does not exist. 這只發生在舊頁面上，新創建的頁面能夠被創建和保存而不會出現任何錯誤

注意：盡管我沒有覆蓋保存方法，但新頁面沒有子頁面但試圖找出導致此錯誤的原因任何建議或提示都會非常有幫助謝謝

這里是追溯：

wagtail.core.models.DoesNotExist
wagtail.core.models.Page.DoesNotExist: Page matching query does not exist.

Traceback (most recent call last)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/contrib/staticfiles/handlers.py", line 76, in __call__
return self.application(environ, start_response)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/core/handlers/wsgi.py", line 133, in __call__
response = self.get_response(request)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/core/handlers/base.py", line 130, in get_response
response = self._middleware_chain(request)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/core/handlers/exception.py", line 49, in inner
response = response_for_exception(request, exc)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/core/handlers/exception.py", line 103, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/core/handlers/exception.py", line 138, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django_extensions/management/technical_response.py", line 37, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/six.py", line 702, in reraise
raise value.with_traceback(tb)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/core/handlers/exception.py", line 47, in inner
response = get_response(request)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/core/handlers/base.py", line 181, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/views/decorators/cache.py", line 44, in _wrapped_view_func
response = view_func(request, *args, **kwargs)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/wagtail/admin/urls/__init__.py", line 127, in wrapper
return view_func(request, *args, **kwargs)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/wagtail/admin/auth.py", line 172, in decorated_view
response = view_func(request, *args, **kwargs)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/views/generic/base.py", line 70, in view
return self.dispatch(request, *args, **kwargs)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/wagtail/admin/views/pages/edit.py", line 131, in dispatch
return super().dispatch(request)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/views/generic/base.py", line 98, in dispatch
return handler(request, *args, **kwargs)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/wagtail/admin/views/pages/edit.py", line 218, in post
return self.form_valid(self.form)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/wagtail/admin/views/pages/edit.py", line 238, in form_valid
return self.publish_action()
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/wagtail/admin/views/pages/edit.py", line 286, in publish_action
revision.publish(
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/wagtail/core/models.py", line 2972, in publish
page.save()
File "/home/oladhari/gounite-v2/GOunite/v2/home/models.py", line 98, in save
super().save(*args, **kwargs)
File "/usr/lib/python3.8/contextlib.py", line 75, in inner
return func(*args, **kwds)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/wagtail/core/models.py", line 1028, in save
result = super().save(**kwargs)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/modelcluster/models.py", line 199, in save
getattr(self, relation).commit()
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/modelcluster/fields.py", line 202, in commit
item.delete()
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/wagtail/core/models.py", line 1094, in delete
return Page.objects.get(id=self.id).delete(*args, **kwargs)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/db/models/manager.py", line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/home/oladhari/.virtualenvs/gounite/lib/python3.8/site-packages/django/db/models/query.py", line 429, in get
raise self.model.DoesNotExist(
wagtail.core.models.Page.DoesNotExist: Page matching query does not exist.

Answer 1

引發錯誤的部分看起來像是模型中將一頁與其他頁相關聯的代碼。 看到這一行： return Page.objects.get(id=self.id).delete(*args, **kwargs) ？ 所以我認為我們需要知道什么是“項目”以及您保存的頁面如何使用它們。

請發布您正在保存的頁面的模型以及被引用為“項目”的頁面

Answer 2

終於解決了，我們不應該將 ParentalKey 與頁面 model 一起使用（我們在 GOPart model 中使用它，這是一個頁面 model，將其更改為 HomePage 我們現在可以保存錯誤）

class MyModel(RoutablePageMixin, Page, Orderable):

    parent_page_types: list = []

    company = ParentalKey(
        "home.HomePage",
        on_delete=models.SET_NULL,
        verbose_name=_("Company"),
        null=True,
        blank=False,
    )

將其更改為：

class MyModel(RoutablePageMixin, Page):

    parent_page_types: list = []

    company = models.ForeignKey(
        "home.HomePage",
        on_delete=models.SET_NULL,
        verbose_name=_("Company"),
        null=True,
        blank=False,
    )

頁面不能訂購