ambition: Less than and greater than cause stack trace

When constructing a query using something like the following, I receive a stack trace, after calling to_sql or to_hash on the query object:

@@@ Ruby Property.select { |p| p.rent >= 300 }

A similar query, such as the following does not produce a stack trace: 




@@@ Ruby
Property.select { |p| p.rent > 300 }

And here's that stack trace:

RuntimeError: No reflection rent' found on Property from ./script/../config/../config/../vendor/plugins/ambition-0.1.4/lib/ambition/processor.rb:63:inextract_includes' from ./script/../config/../config/../vendor/plugins/ambition-0.1.4/lib/ambition/where.rb:147:in translation' from ./script/../config/../config/../vendor/plugins/ambition-0.1.4/lib/ambition/where.rb:42:inprocess_call' from /var/lib/gems/1.8/gems/ParseTree-2.0.1/lib/sexp_processor.rb:241:in send' from /var/lib/gems/1.8/gems/ParseTree-2.0.1/lib/sexp_processor.rb:241:inprocess' from /var/lib/gems/1.8/gems/ParseTree-2.0.1/lib/sexp_processor.rb:299:in error_handler' from /var/lib/gems/1.8/gems/ParseTree-2.0.1/lib/sexp_processor.rb:240:inprocess' from ./script/../config/../config/../vendor/plugins/ambition-0.1.4/lib/ambition/processor.rb:28:in process_proc' from /var/lib/gems/1.8/gems/ParseTree-2.0.1/lib/sexp_processor.rb:241:insend' from /var/lib/gems/1.8/gems/ParseTree-2.0.1/lib/sexp_processor.rb:241:in process' from /var/lib/gems/1.8/gems/ParseTree-2.0.1/lib/sexp_processor.rb:299:inerror_handler' from /var/lib/gems/1.8/gems/ParseTree-2.0.1/lib/sexp_processor.rb:240:in process' from ./script/../config/../config/../vendor/plugins/ambition-0.1.4/lib/ambition/processor.rb:45:into_s' from ./script/../config/../config/../vendor/plugins/ambition-0.1.4/lib/ambition/query.rb:70:in keyed_clauses' from (irb):56:ininject' from ./script/../config/../config/../vendor/plugins/ambition-0.1.4/lib/ambition/query.rb:68:in each' from ./script/../config/../config/../vendor/plugins/ambition-0.1.4/lib/ambition/query.rb:68:ininject' from ./script/../config/../config/../vendor/plugins/ambition-0.1.4/lib/ambition/query.rb:68:in keyed_clauses' from ./script/../config/../config/../vendor/plugins/ambition-0.1.4/lib/ambition/query.rb:55:into_sql'