Thank you all for the answers! I only wished to improve I do not have to generate my model again after database schema migration. One person gave mi an advise to read that article http://guides.rubyonrails.org/migrations.html on migrations. The next step is generating scaffold for model, controller and view. But they are already generated and I do not want to loose their code applying my changes. As I see now there is no way of not regenerating model. Earlier I just hoped it could be possible to add a piece of hand-written code to my model to access newly added column in the last database migration. I heavily read documentation on ruby. Thank everybody for the answers.
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