Allow for use of a different primary key #52
Merged
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In situations where external tree-based data is cached or otherwise held locally, the ids used by the external service can differ from the database's primary key.
This picks up the work done by @Two9A but adds an additional commit on top to work around bugs with
ActiveRecord::Base.reset_column_information
, which appears to be ineffective in both activerecord 3.2 and 4.1, which lead to test failures due to the column cache not being invalidated.Closes #50.