I18n

1. Customise you own I18n solution. One easy way is to overwrite app/helpers/devise_helper.rb, which is mentioned as "A simple way to show error messages for the current devise resource. If you need to customize this method, you can either overwrite it in your application helpers or copy the views to your application." in the comment.

2. Setting default locale (config/application.rb) config.i18n.default_locale = :sv

Brazilian Portuguese (devise.pt-BR.yml) "https://gist.github.com/924555":https://gist.github.com/924555 by "@mateusg":https://github.com/mateusg "https://gist.github.com/766771":https://gist.github.com/766771 by "@phstc":https://github.com/phstc "https://gist.github.com/628507":https://gist.github.com/628507 by "@shadow11":https://github.com/shadow11 "https://gist.github.com/1007304":https://gist.github.com/1007304 by "@lucascaton":https://github.com/lucascaton "https://gist.github.com/1045501":https://gist.github.com/1045501 by "@danilofavacho":https://github.com/danilofavacho "https://gist.github.com/1326333":https://gist.github.com/1326333 for Devise 1.4.7 by "@daniambrosio":https://github.com/daniambrosio

Catalan (devise.ca.yml): "https://gist.github.com/1427701":https://gist.github.com/1427701 by "@codegram":https://github.com/codegram and "@jrom":https://github.com/jrom

Chinese Simplified devise.zh-cn.yml "https://gist.github.com/482530":https://gist.github.com/482530 by "@doabit":https://github.com/doabit devise.zh-CN.yml "https://gist.github.com/1008642":https://gist.github.com/1008642 devise.zh-CN.yml "https://gist.github.com/1319590":https://gist.github.com/1319590 by "@acenqiu":https://github.com/acenqiu

Chinese Traditional (devise.zh-TW.yml) "https://gist.github.com/964066":https://gist.github.com/964066 by "@l4u":https://github.com/l4u "https://gist.github.com/477126":https://gist.github.com/477126 by "@gugod":https://github.com/gugod

Croatian (devise.hr.yml) "https://gist.github.com/991538":https://gist.github.com/991538 by "@babinho":https://github.com/babinho

Czech (devise.cs.yml) "https://gist.github.com/889553":https://gist.github.com/889553 by "@bver":https://github.com/bver

Danish (devise.da.yml) "https://gist.github.com/638785":https://gist.github.com/638785 by "@jgrau":https://github.com/jgrau

Dutch (devise.nl.yml) "https://gist.github.com/448125":https://gist.github.com/448125 by "@wilco":https://github.com/wilco

English (default) "https://github.com/plataformatec/devise/blob/master/config/locales/en.yml":https://github.com/plataformatec/devise/blob/master/config/locales/en.yml

Finnish (devise.fi.yml): "https://gist.github.com/786127":https://gist.github.com/786127 by "@akonan":https://github.com/akonan

French (devise.fr.yml): "https://gist.github.com/1153706":https://gist.github.com/1153706 by "@bbenezech":https://github.com/bbenezech "https://gist.github.com/379988":https://gist.github.com/379988 by "@tadatoshi":https://github.com/tadatoshi "https://gist.github.com/871074":https://gist.github.com/871074 by "@jujudellago":https://github.com/jujudellago (update for translated-views devise-1.1.2)

German (devise.de.yml) "https://gist.github.com/520859":https://gist.github.com/520859 (Sie) by "@chrugail":https://github.com/chrugail "https://gist.github.com/624775":https://gist.github.com/624775 (Du) by "@mrjfk10":https://github.com/mrjfk10 "https://gist.github.com/960718":https://gist.github.com/960718 (Du auch) by "@punkrats":https://github.com/punkrats

Hungarian (devise.hu.yml) "https://gist.github.com/716483":https://gist.github.com/716483 by "@czettnersandor":https://github.com/czettnersandor

Hebrew (devise.he.yml) "https://gist.github.com/503804":https://gist.github.com/503804, by "@shmichael":https://github.com/shmichael (devise 1.0.8)

Icelandic (devise.is.yml) "https://gist.github.com/856333":https://gist.github.com/856333, by "@sozialhelden":https://github.com/sozialhelden

Indonesian (devise.id.yml) "https://gist.github.com/754652":https://gist.github.com/754652, by "@yulrizka":https://github.com/yulrizka

Italian (devise.it.yml) "https://gist.github.com/1170644":https://gist.github.com/1170644 by "@mcanato":https://github.com/mcanato

Japanese (devise.ja.yml) "https://gist.github.com/606476":https://gist.github.com/606476 by "@yhara":https://github.com/yhara

Latvian (devise.lv.yml): "https://gist.github.com/1226317":https://gist.github.com/1226317 by "@mak-it":https://github.com/mak-it

Lithuanian (devise.lt.yml): "https://gist.github.com/432788":https://gist.github.com/432788 by "@pacifists":https://github.com/pacifists

Malaysian (devise.my.yml): "https://gist.github.com/977606":https://gist.github.com/977606 by "@iqbalhasnan":https://github.com/iqbalhasnan

Norwegian Bokmål (devise.nb.yml): "https://gist.github.com/902531":https://gist.github.com/902531 by "@bonkowski":https://github.com/bonkowski and "@kjbekkelund":https://github.com/kjbekkelund

Persian (devise.fa.yml) "https://gist.github.com/939048":https://gist.github.com/939048 by "@ryco":https://github.com/ryco

Polish (devise.pl.yml) "https://gist.github.com/455635":https://gist.github.com/455635 by "@sickill":https://github.com/sickill "https://gist.github.com/487808":https://gist.github.com/487808 by "@grzesiub":https://github.com/grzesiub "https://gist.github.com/891279":https://gist.github.com/891279 by "@marioosh":https://github.com/marioosh (works with devise 1.2) "https://gist.github.com/1099061":https://gist.github.com/1099061 by "@rogal111":https://github.com/rogal111 (devise 1.4.2) "https://gist.github.com/1235911":https://gist.github.com/1235911 by "@saepia":https://github.com/saepia (devise 1.4.6)

Portugal Portuguese (devise.pt-PT.yml) "https://gist.github.com/579087":https://gist.github.com/579087 by "@alexreisner":https://github.com/alexreisner "https://gist.github.com/1002747":https://gist.github.com/1002747 by "@pama":https://github.com/pama

Russian (devise.ru.yml) "https://gist.github.com/1242140":https://gist.github.com/1242140, by "@Antiarchitect":https://github.com/Antiarchitect [GEM] "https://github.com/korobkov/devise-russian":https://github.com/korobkov/devise-russian, "https://rubygems.org/gems/devise-russian":https://rubygems.org/gems/devise-russian by "@korobkov":https://github.com/korobkov "https://gist.github.com/428668":https://gist.github.com/428668, by "@sergio-fry":https://github.com/sergio-fry

Slovak (devise.sk.yml) "https://gist.github.com/1295185":https://gist.github.com/1295185 by "@marospixel":https://github.com/marospixel

Spanish (devise.es.yml) "https://gist.github.com/1196295":https://gist.github.com/1196295 (Tu) (for Devise 1.4.4) "https://gist.github.com/1133929":https://gist.github.com/1133929 (Tu) (for Devise 1.4.2) by "@willywg":https://gist.github.com/willywg "https://gist.github.com/1111315":https://gist.github.com/1111315 (Tu) by "@scambra":https://github.com/scambra "https://gist.github.com/448139":https://gist.github.com/448139 (Tu) by "@pacoguzman":https://github.com/pacoguzman "https://gist.github.com/463944":https://gist.github.com/463944 (Tu) by "@eduludi":https://github.com/eduludi "https://gist.github.com/1257123":https://gist.github.com/1257123 (Usted) by "@ChristopherThorpe":https://github.com/ChristopherThorpe, forked from "1196295":https://gist.github.com/1196295 "https://gist.github.com/1302200":https://gist.github.com/1302200 - Spanish Mexican for Devise 1.4.8 by "Gabriel Medina Rha7":https://github.com/rha7dotcom "https://gist.github.com/1330093":https://gist.github.com/1330093 (Mexico - Usted) by "@albertopadilla":https://github.com/albertopadilla "https://gist.github.com/1330091":https://gist.github.com/1330091 (Mexico - Tú) by "@albertopadilla":https://github.com/albertopadilla

Swedish (devise.sv.yml) "https://gist.github.com/440569":https://gist.github.com/440569 by "@flojon":https://github.com/flojon