I tried creating a patch but was unsuccessful. Could you please look at these failing tests to see if you have an idea for a workarount. The problem roots from custom actions not having a polymorphic path. The workaround in this post worked for me on an individual basis. Instead of using the custom action url helpers archive_resource_url I am using the main helper with a :action option resource_url(:action => :archive)
resource_url(:action => :archive)
failing test for custom options with and without optional parents
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