zenmigrate GraphDefinitionsAndFriends acquisition sometimes breaks

[chris]

When running zenmigrate I came across the following error:
AttributeError: stacked

This comes as a result of the code in graphDefinitionsAndFriends.py:

                oldGraph = getattr(template.graphs, graphDef.id, None)
                if not oldGraph:
                    continue
                for gp in graphDef.graphPoints():
                    gp.stacked = oldGraph.stacked

Jason says that we should not use getattr in this case but instead should use _getOb(). He also suggests this fix is applied to the 2.1.1 release.

[chris]

(In [7343]) refs #2273: use acquisition to obtain the graph definition id

[jstevens]

Approved for 2.1.1, but migrate script not reviewed yet

[marc]

(In [7472]) Patching r7343 to 2.1.x branch

• refs #2273