Recent I18n fallback fix causes failure to load translations hash in Rails

[johnnyshields]

For some reason (still investigating) this commit: 12aa0f0 causes my app to fail to load the translations hash in my Rails app, and I get missing translation errors.

The load failure occurs irrespective whether config.i18n.enforce_available_locales is true or false.

Rolling back to the immediate previous commit resolves the issue.

Still investigating root cause, may be a toxic interaction with another gem.

[johnnyshields]

I found that adding the following to Backend::Fallbacks::#translate method solves the issue:

init_translations unless initialized?

Some basic debugging indicates that I18n#reload! is called by the ActiveSupport i18n_railtie, and using fallbacks there is nowhere that I18n.init_translations is called.

Here is the code I'm using to initialize I18n in my Rails config for reference. Am using simple (YAML-based) store:

    config.i18n.default_locale = :ja
    config.i18n.available_locales = [:en, :ja, :'zh-CN']
    config.i18n.enforce_available_locales = true
    require 'i18n/backend/fallbacks'
    I18n::Backend::Simple.send(:include, I18n::Backend::Fallbacks)
    I18n.fallbacks[:en] = [:en, :ja, :'zh-CN']
    I18n.fallbacks[:ja] = [:ja, :en, :'zh-CN']
    I18n.fallbacks[:'zh-CN'] = [:'zh-CN', :ja, :en]

[johnnyshields]

Am using my fork as a workaround: https://github.com/johnnyshields/i18n/commit/c2912aa52af572d1a2c8c9ca223cd736e133d5f1

[guigs]

I have the same issue, but only when config.i18n.enforce_available_locales is false. @johnnyshields, I tried your branch and it fixes the problem.

[johnnyshields]

Can someone please take a look at this? Believe this is a legitimate problem...

[johnnyshields]

@klishevich I'm surprised this is not an issue for more people. Do you have any idea what's going on here?

[klishevich]

@johnnyshields in my case problem was in bad ru.yml file.
it was

en:
    date:
      abbr_day_names:
      - Вс
      - Пн
      - Вт
      - Ср
      - Чт
      - Пт
      - Сб 

it should be

ru:
    date:
      abbr_day_names:
      - Вс
      - Пн
      - Вт
      - Ср
      - Чт
      - Пт
      - Сб 

After I changed everything works fine!

[carlosantoniodasilva]

@johnnyshields it seems someone else is having a similar issue after the 0.6.10 release. I'll try to take a look when I find some time here.

[johnnyshields]

@carlosantoniodasilva thank you, your help is much appreciated!

[arthurnn]

@johnnyshields are you using the I18n.backend = I18n::Backend::Chain backend?

[johnnyshields]

@arthurnn I think I'm using I18n::Backend::Simple

$> bundle exec rails console
irb(main):006:0> I18n.backend.class == I18n::Backend::Simple
=> true
irb(main):007:0> I18n.backend.class > I18n::Backend::Chain
=> nil
irb(main):008:0> I18n.backend.class == I18n::Backend::Chain
=> false

[carlosantoniodasilva]

Can you guys try with current master and let us know whether it's working or you are still having issues? Thanks.

[johnnyshields]

@carlosantoniodasilva @arthurnn this seems to have resolved the issue. Thank you very much!