Server Error Generated while adding cables, but still creates the cable -> after 3.5.0 upgrade

[mforman2]

As title states, it creates the cable but generates this server error after every newly created cable.

These cables are being created manually through the web interface, NOT by bulk import or API.

These cables are from interface to interface.
The error seems to only happen when the input "Create & Add Another" is used, with just using the create button, no error is generated.

The server error:
<class 'Attribute Error'>
'str' object has no attribute 'label'

python 3.8.10
netbox 3.5.0

I've also testing this on the netbox demo site and generates the same error.

[candlerb]

Please can you obtain a backtrace: if this is a production system then set ADMINS and EMAIL in configuration.py and it will be mailed out to you. Alternatively, you can set DEBUG=True and it will be shown in the web interface.

When pasting into Github, please put three backticks (```) on a line of their own, before and after the backtrace, to stop Github mangling it as Markdown.

If you can give a specific series of steps to reproduce the problem, then it would be helpful to open a github bug report, including the backtrace too.

[mforman2]

Traceback (most recent call last):
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/core/handlers/exception.py", line 56, in inner
    response = get_response(request)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/core/handlers/base.py", line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/views/generic/base.py", line 103, in view
    return self.dispatch(request, *args, **kwargs)
  File "/opt/netbox/netbox/dcim/views.py", line 3089, in dispatch
    return super().dispatch(request, *args, **kwargs)
  File "/opt/netbox/netbox/netbox/views/generic/object_views.py", line 167, in dispatch
    return super().dispatch(request, *args, **kwargs)
  File "/opt/netbox/netbox/netbox/views/generic/base.py", line 26, in dispatch
    return super().dispatch(request, *args, **kwargs)
  File "/opt/netbox/netbox/utilities/views.py", line 99, in dispatch
    return super().dispatch(request, *args, **kwargs)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/views/generic/base.py", line 142, in dispatch
    return handler(request, *args, **kwargs)
  File "/opt/netbox/netbox/netbox/views/generic/object_views.py", line 227, in get
    return render(request, self.template_name, {
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/shortcuts.py", line 24, in render
    content = loader.render_to_string(template_name, context, request, using=using)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/loader.py", line 62, in render_to_string
    return template.render(context, request)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/backends/django.py", line 61, in render
    return self.template.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 175, in render
    return self._render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/test/utils.py", line 111, in instrumented_test_render
    return self.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in <listcomp>
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 966, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/loader_tags.py", line 157, in render
    return compiled_parent._render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/test/utils.py", line 111, in instrumented_test_render
    return self.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in <listcomp>
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 966, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/loader_tags.py", line 157, in render
    return compiled_parent._render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/test/utils.py", line 111, in instrumented_test_render
    return self.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in <listcomp>
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 966, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/loader_tags.py", line 157, in render
    return compiled_parent._render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/test/utils.py", line 111, in instrumented_test_render
    return self.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in <listcomp>
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 966, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/loader_tags.py", line 63, in render
    result = block.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in <listcomp>
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 966, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/loader_tags.py", line 63, in render
    result = block.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in <listcomp>
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 966, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/loader_tags.py", line 63, in render
    result = block.nodelist.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in render
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 1005, in <listcomp>
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/base.py", line 966, in render_annotated
    return self.render(context)
  File "/opt/netbox/venv/lib/python3.8/site-packages/django/template/library.py", line 258, in render
    _dict = self.func(*resolved_args, **resolved_kwargs)
  File "/opt/netbox/netbox/utilities/templatetags/form_helpers.py", line 55, in render_field
    'label': label or field.label,

[jeremystretch]

This seems related to #12395, which I believe I've just about fixed, and should be resolved in v3.5.1.

[mforman2]

It does seem similar to #12395.
I'll hold off on the bug report unless it resurfaces in v3.5.1~

Thanks!

[mforman2]

I upgraded to 3.5.1 today and the error persists unfortunately. It is related to create and add another when adding a cable.

[tonydew]

I am running a brand new install, Netbox 3.5.1 and also get this error. Only seems to happen when you chose to "Create & Add Another" cable.

Server Error
There was a problem with your request. Please contact an administrator.

The complete exception is provided below:

<class 'AttributeError'>

'str' object has no attribute 'label'

Python version: 3.10.6
NetBox version: 3.5.1

[mforman2]

I am running a brand new install, Netbox 3.5.1 and also get this error. Only seems to happen when you chose to "Create & Add Another" cable.

Server Error
There was a problem with your request. Please contact an administrator.

The complete exception is provided below:

<class 'AttributeError'>

'str' object has no attribute 'label'

Python version: 3.10.6
NetBox version: 3.5.1

You can track this issue here #12579