🌐(backend) internationalize demo

This allows the demo to generate user and filenames with other locales
than English, for all languages defined in the project's settings.
In particular, it allows the generation of accented names, which were
previously missing.

Author: Ash-Crow

CHANGELOG.md

@@ -23,6 +23,7 @@ and this project adheres to
 - ♻️(frontend) preserve @ character when esc is pressed after typing it #1512
 - ♻️(frontend) make summary button fixed to remain visible during scroll #1581
 - ♻️(frontend) pdf embed use full width #1526
+- 🌐(backend) internationalize demo #1644
 
 ### Fixed
 

src/backend/demo/management/commands/create_demo.py

@@ -17,7 +17,8 @@
 
 from demo import defaults
 
-fake = Faker()
+languages = [x for (x,y) in settings.LANGUAGES]
+fake = Faker(languages)
 
 logger = logging.getLogger("impress.commands.demo.create_demo")
 
@@ -127,7 +128,7 @@ def create_demo(stdout):
                     is_staff=False,
                     short_name=first_name,
                     full_name=f"{first_name:s} {random.choice(last_names):s}",
-                    language=random.choice(settings.LANGUAGES)[0],
+                    language=random.choice(languages),
                 )
             )
         queue.flush()
@@ -179,8 +180,7 @@ def create_demo(stdout):
                     is_superuser=False,
                     is_active=True,
                     is_staff=False,
-                    language=dev_user["language"]
-                    or random.choice(settings.LANGUAGES)[0],
+                    language=dev_user["language"] or random.choice(languages),
                 )
             )