Can't properly order alphabetically in Rails -

i have in controller:

@players = player.all.order(:last_name).group_by{|player| player.last_name[0]} 

and in view have:

- @players.each |letter, players|    %h2= letter    - players.each |player| 

this results in players being grouped alphabetically, not ordered alphabetically within groups, e.g:

• almunia
• adams
• angha
• etc

in other words, adams should come before almunia of course.

what doing wrong?

a little surprising, i'm not sure group_by guarantees order of elements once grouped. fix adjust players.each loop players.sort_by(&:last_name).each