Becoming a MutltiLingual SuperHero in Django

In this talk, we’ll see how we make a language agnostic backend, to serve our app in different languages, based on what language the client wants to communicate in.

We’ll see how to support translation for static data and dynamic data, using various third-party services.

Transcript

1. Becoming a Multilingual Super Hero in Django Sanyam Khurana CuriousLearner ErSanyamKhurana SanyamKhurana.com
2. def __who_am_i__()
3. def __who_am_i__(): • One of you! A part of the community • CPython contributor and bug triage access on bugs.python.org • Contributor to Gecko Engine, add-ons, Marionette, TaskCluster • GSoC 2018 Mentor for Debian • RGSoC 2016 Mentor
4. The Road to become a Multilingual SuperHero in Django
5. Preparing for Internationalization & Localization
8. Retrieving Language Preference from Client's Request
9. Selecting Language in the order of preference • Language prefix in requested URL (Eg: /en/api/resource) • LANGUAGE_SESSION_KEY key in current user's session • django_language cookie determined by LANGUAGE_COOKIE_NAME • Accept-Language header • Fallback to LANGUAGE_CODE in settings
12. GOTCHA #1 The LocaleMiddleware should always come before CommonMiddleware and after SessionMiddleware
13. What does LocaleMiddleware help with?
14. • Language prefix in requested URL • LANGUAGE_SESSION_KEY key in current user's session • django_language cookie determined by LANGUAGE_COOKIE_NAME • Accept-Language header • LANGUAGE_CODE setting
15. What To Translate?
16. Static String Translations
17. Templates
18. Templates
19. Templates
20. GOTCHA #2 i18n tag should be loaded in every file, even if it extends another file that already has it loaded.
21. All *.py Files
22. • Language prefix in requested URL • LANGUAGE_SESSION_KEY key in current user's session • django_language cookie determined by LANGUAGE_COOKIE_NAME • Accept-Language header • LANGUAGE_CODE setting
23. • Language prefix in requested URL • LANGUAGE_SESSION_KEY key in current user's session • django_language cookie determined by LANGUAGE_COOKIE_NAME • Accept-Language header • LANGUAGE_CODE setting
24. GOTCHA #3 Use ugettext when you need immediate evaluation, else, always prefer ugettext_lazy
25. Generating Translation Files For Static Strings
30. GOTCHA #4 Use makemessages -i venv to exclude generating django.po files for every package in env
31. GOTCHA #5 In Django settings 'zh-cn' In makemessages command 'zh_CN'
32. Compiling Static String Translations
34. GOTCHA #6 compilemessages command would generate django.mo files for every package if your venv is in project directory
35. GOTCHA #7 Restart wsgi server after compilemessages, otherwise translations won't work
36. Dynamic String Translations
37. Model Fields
40. BONUS
41. GOTCHA #8 Check in django shell if the translations are working with activate and ugettext
43. GOTCHA #9 Some strings are still not being translated Remove line that marks them as fuzzy
44. CONCLUSION
45. Questions Sanyam@SanyamKhurana.com CodeMentor.io/CuriousLearner CuriousLearner @ErSanyamKhurana