Python: broken access of the parent of a proxy object #70283

New Issue

lucas veber · 2019-09-26T19:49:30+02:00

lucas veber commented

2019-09-26 19:49:30 +02:00

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86

Blender Version
Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-25 20:42, hash: ee47075449
Worked: (optional)

Short description of error
Accessing the parent object of a proxy is broken if it belongs to a collection with the same name.

Exact steps for others to reproduce the error

Link the collection of the following blend in a new file:
box.blend

(It contains one cube ("Box") parented to an empty, contained in a collection name "Box")

Make a proxy (F3 > Make proxy > Box)
Run this code in the text editor:

import bpy

box_proxy_name = bpy.context.active_object.proxy.name
print(box_proxy_name)
box = bpy.data.objects[box_proxy_name]
print(box.parent.name)

Error, box.parent = None
Now open the box.blend file, and rename the box "box1"
Link it again
Run the script
It works

Note that it works in the first case, if we access directly the parent this way:

bpy.context.active_object.proxy.parent

Thanks for your work!

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86 **Blender Version** Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-25 20:42, hash: `ee47075449` Worked: (optional) **Short description of error** Accessing the parent object of a proxy is broken if it belongs to a collection with the same name. **Exact steps for others to reproduce the error** * Link the collection of the following blend in a new file: [box.blend](https://archive.blender.org/developer/F7776038/box.blend) (It contains one cube ("Box") parented to an empty, contained in a collection name "Box") * Make a proxy (F3 > Make proxy > Box) * Run this code in the text editor: ``` import bpy box_proxy_name = bpy.context.active_object.proxy.name print(box_proxy_name) box = bpy.data.objects[box_proxy_name] print(box.parent.name) ``` * Error, box.parent = None * Now open the box.blend file, and rename the box "box1" * Link it again * Run the script * It works Note that it works in the first case, if we access directly the parent this way: ``` bpy.context.active_object.proxy.parent ``` Thanks for your work!

lucas veber commented

2019-09-26 19:49:30 +02:00

Added subscriber: @LucasVeber

Germano Cavalcante commented

2019-09-27 19:39:41 +02:00

Added subscribers: @mont29, @mano-wii

Bastien Montagne was assigned by Germano Cavalcante

2019-09-27 19:39:41 +02:00

Germano Cavalcante commented

2019-09-27 19:39:41 +02:00

@mont29, looks like this involves Append & Link & Override so that's your area, right?

@mont29, looks like this involves `Append & Link & Override` so that's your area, right?

Bastien Montagne commented

2019-09-27 22:07:57 +02:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2019-09-27 22:07:57 +02:00

Bastien Montagne commented

2019-09-27 22:07:57 +02:00

This has nothing to do with data management, or collection name, it’s just plain old collision when linked data block and local one (the proxy) have the exact same name, see the doc.

This has nothing to do with data management, or collection name, it’s just plain old collision when linked data block and local one (the proxy) have the exact same name, see [the doc](https://docs.blender.org/api/current/info_gotcha.html#library-collisions).

lucas veber commented

2019-09-28 11:56:35 +02:00

Ah! Bummer. Well I guess we have to deal with it, thanks for letting me know... Will static overrides overcome this issue?

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Python: broken access of the parent of a proxy object #70283