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'NoneType' object has no attribute 'cable' after changing the Type but leaving the Name unchanged #2663

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opened 2025-12-29 18:21:00 +01:00 by adam · 1 comment
adam commented 2025-12-29 18:21:00 +01:00
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Originally created by @fablabo on GitHub (Jun 13, 2019).

Environment

  • Python version: 3.5.3
  • NetBox version: 2.5.13

Steps to Reproduce

  1. Connect an interface by clicking the Connect icon
  2. Use the pull-down menu to select the device (switch), type (front) and name (3)
  3. Change type front to rear but leave name unchanged

Expected Behavior

A connection to switch, rear port 3 was expected.

Observed Behavior

Internal Server Error: /circuits/circuit-terminations/32/connect/

AttributeError at /circuits/circuit-terminations/32/connect/
'NoneType' object has no attribute 'cable'

In my reproducible test case I tried connecting a Circuit to a patchpanel for which i needed the rear-port instead of the front-port. After receiving an error the circuit did show a connected termination with a cable id but it was impossible to edit or remove the termination.

Deleting the related rows from tables circuits_circuittermination and dcim_cable allowed me to create a new connection to the circuit termination.

I'm guessing the Name drop-down menu needs to be refreshed after changing the Type

Originally created by @fablabo on GitHub (Jun 13, 2019). ### Environment * Python version: 3.5.3 * NetBox version: 2.5.13 ### Steps to Reproduce 1. Connect an interface by clicking the Connect icon 2. Use the pull-down menu to select the device (switch), type (front) and name (3) 3. Change type front to rear but leave name unchanged ### Expected Behavior A connection to switch, rear port 3 was expected. ### Observed Behavior ``` Internal Server Error: /circuits/circuit-terminations/32/connect/ AttributeError at /circuits/circuit-terminations/32/connect/ 'NoneType' object has no attribute 'cable' ``` In my reproducible test case I tried connecting a Circuit to a patchpanel for which i needed the rear-port instead of the front-port. After receiving an error the circuit did show a connected termination with a cable id but it was impossible to edit or remove the termination. Deleting the related rows from tables circuits_circuittermination and dcim_cable allowed me to create a new connection to the circuit termination. I'm guessing the Name drop-down menu needs to be refreshed after changing the Type
adam closed this issue 2025-12-29 18:21:00 +01:00
adam commented 2025-12-29 18:21:00 +01:00
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@jeremystretch commented on GitHub (Jun 20, 2019):

The last box refers to a specific object; the name is for display only. Once selecting a new type of component, you need to select the new component as well.

FYI the current connection form is being replace in v2.6 anyway, so this won't matter anymore.

@jeremystretch commented on GitHub (Jun 20, 2019): The last box refers to a specific object; the name is for display only. Once selecting a new type of component, you need to select the new component as well. FYI the current connection form is being replace in v2.6 anyway, so this won't matter anymore.
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Reference: starred/netbox#2663
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