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error with self.node.get_last_child()._inc_path() #140

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pavlo-mk opened this issue May 21, 2019 · 4 comments · May be fixed by #235
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error with self.node.get_last_child()._inc_path() #140

pavlo-mk opened this issue May 21, 2019 · 4 comments · May be fixed by #235

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@pavlo-mk
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pavlo-mk commented May 21, 2019 •
edited

I get error with this line code
treebeard/mp_tree.py:387
newobj.path = self.node.get_last_child()._inc_path()

'NoneType' object has no attribute '_inc_path'

self have parent object page and in kwargs is instance.

backend_1 | Traceback (most recent call last): backend_1 | File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner backend_1 | response = get_response(request) backend_1 | File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 115, in _get_response backend_1 | response = self.process_exception_by_middleware(e, request) backend_1 | File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 113, in _get_response backend_1 | response = wrapped_callback(request, *callback_args, **callback_kwargs) backend_1 | File "/usr/local/lib/python3.6/site-packages/django/views/decorators/cache.py", line 31, in _cache_controlled backend_1 | response = viewfunc(request, *args, **kw) backend_1 | File "/usr/local/lib/python3.6/site-packages/django/contrib/auth/decorators.py", line 21, in _wrapped_view backend_1 | return view_func(request, *args, **kwargs) backend_1 | File "/opt/project/pv/apps/wagtailoverrides/views/pages.py", line 246, in create backend_1 | parent_page.add_child(instance=page) backend_1 | File "/usr/local/lib/python3.6/site-packages/treebeard/mp_tree.py", line 1013, in add_child backend_1 | return MP_AddChildHandler(self, **kwargs).process() backend_1 | File "/usr/local/lib/python3.6/site-packages/treebeard/mp_tree.py", line 387, in process backend_1 | newobj.path = self.node.get_last_child()._inc_path() backend_1 | AttributeError: 'NoneType' object has no attribute '_inc_path' backend_1 | [21/May/2019 09:03:28] "POST /admin/pages/new/article/articlepage/5/ HTTP/1.1" 500 110440

tech info:
python 3.6
Django 2.2.1
wagtail 2.5.1
django-treebeard 4.3
image
@pinksharpii
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Did you figure out what the issue was? I'm having the same issue. Updating to 3.4.1 did not help.

@graingert
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image

@graingert
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#220 related?

@hazho
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hazho commented Oct 2, 2021

I think I'll solve this one today

hazho added a commit to hazho/django-treebeard that referenced this issue Oct 2, 2021
@hazho
solving add_child error
26f3d90 
issues:
django-treebeard#140
django-treebeard#220
and
@hazho hazho mentioned this issue Oct 2, 2021
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@graingert graingert mentioned this issue Oct 2, 2021
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add first child if there's no last child graingert/django-treebeard
4 participants
@graingert @pinksharpii @pavlo-mk @hazho