*问题总结* *AR 的运用* Model.where Model.find_by_field Model.first https://gist.github.com/gonglexin/7342d95d72b09ab64b4f *DRY* https://gist.github.com/gonglexin/4a25216bc533f9c94946 https://gist.github.com/gonglexin/ef4816846bf5a3c2afe3 https://gist.github.com/gonglexin/436be3c7d6cc8ad98a14 Ruby 语言的基础 https://gist.github.com/gonglexin/6b47a9a4820198426836 https://gist.github.com/gonglexin/ce531a6b8d757c159190 https://gist.github.com/gonglexin/791017e304eefa7b24d5 https://gist.github.com/gonglexin/0267861b0e70ad6f12f6 *Rails 框架的熟悉* https://gist.github.com/gonglexin/55f426be56c8a79ee263 https://gist.github.com/gonglexin/035f7cfddf9ee6f5a8e8 https://gist.github.com/gonglexin/23626666ce6221c336da https://gist.github.com/gonglexin/c73f4f028004b4f78e3d *代码规范和整洁* https://gist.github.com/gonglexin/0f79359fa09e04dcd56e https://gist.github.com/gonglexin/02b8a0dc3868501cd6e3 谢谢lexin！