RETS4R provides a native Ruby interface to the RETS (Real Estate Transaction Standard). It currently is built for the 1.5 specification, but support for 1.7 and 2.0 are planned. It does not currently implement all of the specification, but the most commonly used portions. Specifically, there is no support for Update transactions.
While this is the only “native” Ruby RETS library currently available (to my knowledge), there is another client written in C++ with Ruby bindings available from the Center for Realtor® Technology (www.crt.realtors.org/projects/rets/librets/).
Build Status: travis-ci.org/josephholsten/rets4r
Mailing List: email@example.com librelist.com/browser/rets4r/
Ruby >= 1.8.4
Nokogiri >= 1.3.2
Please see the LICENSE file.
This project was made possible in part by the Contra Costa Association of Realtors® (www.ccartoday.com).
Take a look at the examples directory. You'll find it more helpful than the unit tests because the unit tests work off of local files and mock objects, rather than making real transaction calls.
Due to the nature of this library, it is HIGHLY recommended that you have at least a basic understanding of the RETS protocol. The official RETS website is www.rets.org.
Most of the time, you will be either searching for resources or getting objects, so begin there.