In this section, we will elaborate class Item in an app named Sessions, as introduced in the previous section. The objective is to illustrate more features about Appy classes.

Preamble · Internationalization (i18n)

As a preamble, because internationalized user interfaces is a built-in Appy feature, we will configure our app to support 2 languages: English and French.

By default, only English is supported. Adding more languages can be done via the main configuration file, Sessions/__init__.py, by adding the ISO-639 2-letters language code, as shown in line 11:

01 #- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
02 class Config(appy.Config):
03    server = server.Config()
04    security = guard.Config()
05    backup = backup.Config()
06    jobs = scheduler.Config()
07    database = database.Config()
08    log = log.Config()
09    model = model.Config()
10    ui = ui.Config()
11    ui.languages.append('fr')
12    deploy = deploy.Config()
13    peers = peer.Config()
14 #- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Describing the Config class in detail will not be done here. It is not recommended to remove English (en) from ui.languages, as it serves as default and/or fallback language at various places in the framework.

Call the Sessions/make.py script for the new language to be taken into account.

cd <your_apps_folder>/Sessions
./make

After executing this, you will see 2 more files in Sessions/tr: Custom-fr.po and Sessions-fr.po.

ls tr
Custom-en.po  Custom-fr.po  Custom.pot  Sessions-en.po  Sessions-fr.po  Sessions.pot

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