Russian language is hard. Inflecting names in Russian is even harder.

Make it simple with: https://github.com/petrovich/petrovich_elixir

Here’s a brief example:

Petrovich.firstname!("Александр", :accusative)
# => Александра

Petrovich.middlename!("Сергеевич", :accusative)
# => Сергеевича

Petrovich.lastname!("Пушкин", :accusative, :male)
# => Пушкина

Petrovich can also detect gender by person’s name. It is very simple too:

alias Petrovich.Detector

Detector.detect_gender("Александр", :firstname)
# => {:ok, "male"}

Detector.detect_gender("Александра", :firstname)
# => {:ok, "female"}

Check it out! And learn Russian if don’t know it yet.