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Internationalisation (i18n) and Localisation (l10n)

InvenioRDM, by default, comes with an English user interface. You can turn on additional languages and change the default one in your InvenioRDM instance.

Add Another Language

Step 1 - Adjust your invenio.cfg file

In your my-site/invenio.cfg change:

# Invenio-I18N
# ============
# See https://invenio-i18n.readthedocs.io/en/latest/configuration.html

# Other supported languages (do not include BABEL_DEFAULT_LOCALE in list).
I18N_LANGUAGES = [
-   # ('de', _('German')),
    # ('tr', _('Turkish')),
]

# Invenio-I18N
# ============
# See https://invenio-i18n.readthedocs.io/en/latest/configuration.html

# Other supported languages (do not include BABEL_DEFAULT_LOCALE in list).
I18N_LANGUAGES = [
+   ('de', _('German')),
    # ('tr', _('Turkish')),
]

Letter Code

The following letter code structure is supported: two letters like, de or tr and four letters, like de_AT, de_DE or zh_CN.

Default and Additional Languages

Make sure not to include the default language (BABEL_DEFAULT_LOCALE) in the list of addtional languages (I18N_LANGUAGES). Both variables are set within my-site/invenio.cfg.

Step 2 - Start or Re-run the server

If you have a running local install:

<Ctrl+C>
invenio-cli run

Re-run when invenio.cfg changes

All changes to invenio.cfg MUST be accompanied by a restart like the above to be picked up. This only restarts the server; it does not destroy any data.

Otherwise, follow the Build, setup and run-instructions.

Step 3 - Change the Language in your Application

In your browser, open your invenioRDM application (local install: https://127.0.0.1:5000; container install: https://127.0.0.1) or refresh the open application page.

In the footer you find a drop down menu, where you can switch between different languages.

Language dropdown menu in footer

That evil cache

If you do not see the dropdown-menu in the footer, check in an incognito window; the browser might shows you a cached page.

Available Languages

InvenioRDM provides several languages, for example, Arabic (ar), Chinese (zh_CN), German (de), and Spanish (es). If your letter code does not work, test with German (de). If you want your language to be included, see: Contribution

Change the Default Language

Step 1 - Adjust your invenio.cfg file

In your my-site/invenio.cfg change:

# Flask-Babel
# ===========
# See https://flask-babel.tkte.ch/#configuration

# Default locale (language)
- BABEL_DEFAULT_LOCALE = 'en'

# Flask-Babel
# ===========
# See https://flask-babel.tkte.ch/#configuration

# Default locale (language)
+ BABEL_DEFAULT_LOCALE = 'de'

Letter Code

The following letter code structure is supported: two letters like, de or tr and four letters, like de_AT, de_DE or zh_CN.

Default and Additional Languages

Make sure not to include the default language (BABEL_DEFAULT_LOCALE) in the list of addtional languages (I18N_LANGUAGES). Both variables are set within my-site/invenio.cfg.

Step 2 - Start your instance

If you have a running local install:

<Ctrl+C>
invenio-cli run

Re-run when invenio.cfg changes

All changes to invenio.cfg MUST be accompanied by a restart like the above to be picked up. This only restarts the server; it does not destroy any data.

Otherwise, follow the Build, setup and run-instructions.

Step 3 - See your Language in the Application

In your browser, open your invenioRDM application (local install: https://127.0.0.1:5000; container install: https://127.0.0.1) or refresh the open application page.

InvenioRDM's user interface should now, by default, use the language you set via the invenio.cfg-file.

That evil cache

If your user interface doesn't talk to you in the expected language, check in an incognito window; the browser might shows you a cached page.

Available Languages

InvenioRDM provides several languages, for example, Arabic (ar), Chinese (zh_CN), German (de), and Spanish (es). If your letter code does not work, test it with German. If you want your language to be included, see: Contribution

Troubleshooting

  • There are English texts showing up in your user interface: If the application cannot find a translation, it will fall back to English. You can help filling these gaps by becoming a translator.
  • Strings appear in many places in your instance and different techniques are involved to handle them. We are working on documentation for translations of
    • (customized) vocabularies
    • static pages
    • (customized) emails
  • Ask for knowledge in Discord #rdm-translations.