Make the date format user configurable

ohayodash/base.py

@@ -94,6 +94,11 @@ def get_greeting():
     return 'こんにちは'
 
 
+@base.app_template_filter()
+def format_datetime(value, format='medium'):
+    return value.strftime(os.environ.get('DATE_FORMAT', '%Y-%m-%d %H:%M'))  # noqa: WPS323
+
+
 @base.route('/')
 def index():
     return render_template('index.j2',

ohayodash/templates/index.j2

@@ -53,7 +53,7 @@
 
         <section id="header">
             <h1>{{ greeting | default("Welcome")}}</h1>
-            <h2>{{ now }}</h2>
+            <h2>{{ now | format_datetime }}</h2>
         </section>
 
         {% if applications %}