10
$\begingroup$

I'm trying to amend an addon that I made for Blender 2.7X to work with Blender 2.80.
The problem is with

bpy.context.scene.objects.active = some_object

This is how I used to set an active object, the problem is, active property was removed in the new API!,reading other Q&As, I found 2 suggestions:

bpy.context.object

and

bpy.context.active_object 

The problem is, both of these will return the already active object, but when I try to use them this way:

bpy.context.active_object = some_object

or

bpy.context.object = some_object

I'm getting an AttributeError: property is read-only!

I tried the documentation with no luck!

EDIT:

According to Blender 2.8 WIKI API changes: https://wiki.blender.org/wiki/Dev:2.8/Source/LayersCollections/API-Changes

bpy.context.scene.objects.active

changed into

bpy.context.render_layer.objects.active

This doesn't work, AttributeError: 'Context' object has no attribute 'render_layer'

$\endgroup$
20
$\begingroup$

Use the view_layer

Set ViewLayer.active to any object in view layer or None

context.view_layer.objects.active = ob
$\endgroup$
  • 1
    $\begingroup$ Great, many thanks @batFINGER, may I ask, how did you figure it out, even the wiki changes got it wrong! $\endgroup$ – Georges Dec 19 '18 at 15:32
  • 2
    $\begingroup$ Upgrading scripts. Read that wiki a while back and remembered it was a context.somelayer.objects.active but not which one lol. Pecking around in API in py console, looking for active prop on some of new type context layers objects collection, and on view_layer bingo. Have a feeling it has been answered here before too. $\endgroup$ – batFINGER Dec 19 '18 at 15:54
  • $\begingroup$ Lol, I guess hacking skills are required to properly read the API $\endgroup$ – Georges Dec 19 '18 at 16:01
  • $\begingroup$ Wouldn't be able to do it without your help @batFINGER many thanks! github.com/sergeod9/Easy_Align_Addon/blob/master/… $\endgroup$ – Georges Dec 19 '18 at 17:59

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.