Show dates in more readable way in webapp

webapp.py

@@ -1,3 +1,4 @@
+import locale
 import os
 
 from bottle import hook, request, route, run, static_file, view
@@ -14,7 +15,16 @@ from models import Price
 def results_page():
     query = Price.select().order_by(Price.date.desc())
     results = list(query)
-    return dict(results=results)
+    day_classes = {
+        0: "monday",
+        1: "tuesday",
+        2: "wednesday",
+        3: "thursday",
+        4: "friday",
+        5: "saturday",
+        6: "sunday",
+    }
+    return dict(results=results, day_classes=day_classes)
 
 
 @route("/static/<filename>")
@@ -24,6 +34,17 @@ def serve_static_file(filename):
     return static_file(filename, root=static_root)
 
 
+@hook("before_request")
+def set_locale():
+    """Set the locale for all categories to the first lang in Accept-Language
+    header. Default to fr_FR.UTF-8
+    """
+    accept_language = request.get_header("Accept-Language", "fr-FR")
+    first_lang = accept_language.split(";")[0].split(",")[0]
+    lang = first_lang.translate(str.maketrans("-", "_")) + ".UTF-8"
+    locale.setlocale(locale.LC_ALL, lang)
+
+
 @hook("before_request")
 def connect_to_db():
     models.db.connect()