In my controller I have this and it works.
@grouped_by_assignable = collection.order("updated_at desc").group_by
{ |assignment| assignment.assignable }
trying to refactor it into a scope on the model as such
scope :grouped_by_assignable, order("updated_at desc").group_by { |
assignment| assignment.assignable }
yields
ArgumentError: Unknown key: #<Project:0x00000102dd5d80>
Any advice?
Thanks,
- FJM
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