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Fix T44453: Exporting Keying Sets referencing node tree properties generates invalid Python code/paths 

The problem is that node trees (such as the Material, Lamp, and Compositor node trees)
are stored as "nested node trees" on the affected datablocks. They are particularly
troublesome to deal with, as the are not easily identified, and also cannot be easily
mapped back to the ID's which actually own them. As a result, the usual automated
methods do not work when dealing with these!
This commit is contained in:
Joshua Leung 2016-02-20 17:53:32 +13:00
parent 6c02c5fb09
commit 028c67c81e
Notes: blender-bot 2023-02-14 09:13:16 +01:00 
Referenced by issue #44453, Invalid Keying Set File (exported with keys containing a ref to 'Shader Nodetree' ID)
1 changed files with 33 additions and 3 deletions
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36
release/scripts/startup/bl_operators/anim.py
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@ -108,10 +108,40 @@ class ANIM_OT_keying_set_export(Operator):
- id.bl_rna.name gives a name suitable for UI,
with a capitalised first letter, but we need
the plural form that's all lower case
- special handling is needed for "nested" ID-blocks
(e.g. nodetree in Material)
"""
idtype_list = ksp.id.bl_rna.name.lower() + "s"
id_bpy_path = "bpy.data.%s[\"%s\"]" % (idtype_list, ksp.id.name)
if ksp.id.bl_rna.identifier.startswith("ShaderNodeTree"):
# Find material or lamp using this node tree...
id_bpy_path = "bpy.data.nodes[\"%s\"]"
found = False
for mat in bpy.data.materials:
if mat.node_tree == ksp.id:
id_bpy_path = "bpy.data.materials[\"%s\"].node_tree" % (mat.name)
found = True
break;
if not found:
for lamp in bpy.data.lamps:
if lamp.node_tree == ksp.id:
id_bpy_path = "bpy.data.lamps[\"%s\"].node_tree" % (lamp.name)
found = True
break;
if not found:
self.report({'WARN'}, "Could not find material or lamp using Shader Node Tree - %s" % (ksp.id))
elif ksp.id.bl_rna.identifier.startswith("CompositorNodeTree"):
# Find compositor nodetree using this node tree...
for scene in bpy.data.scenes:
if scene.node_tree == ksp.id:
id_bpy_path = "bpy.data.scenes[\"%s\"].node_tree" % (scene.name)
break;
else:
self.report({'WARN'}, "Could not find scene using Compositor Node Tree - %s" % (ksp.id))
else:
idtype_list = ksp.id.bl_rna.name.lower() + "s"
id_bpy_path = "bpy.data.%s[\"%s\"]" % (idtype_list, ksp.id.name)
# shorthand ID for the ID-block (as used in the script)
short_id = "id_%d" % len(id_to_paths_cache)