Add dyamic duration formatting

Author: chaosagent

cal.py

@@ -4,6 +4,7 @@
 
 import config
 import views
+from filters import filters
 from models import db, login_manager
 
 app = Flask(__name__, static_url_path='')
@@ -19,3 +20,6 @@
 
 app.jinja_env.trim_blocks = True
 app.jinja_env.lstrip_blocks = True
+
+for name, func in filters.items():
+    app.add_template_filter(func, name=name)

constants.py

@@ -0,0 +1,23 @@
+from collections import OrderedDict
+
+SECOND = 1
+MINUTE = 60 * SECOND
+HOUR = 60 * MINUTE
+DAY = 24 * HOUR
+WEEK = 7 * DAY
+
+TIME_UNITS = OrderedDict([
+    ('second', SECOND),
+    ('minute', MINUTE),
+    ('hour', HOUR),
+    ('day', DAY),
+    ('week', WEEK),
+])
+
+TIME_ABBREVIATIONS = OrderedDict([
+    ('second', 's'),
+    ('minute', 'm'),
+    ('hour', 'h'),
+    ('day', 'd'),
+    ('week', 'w'),
+])

filters.py

@@ -0,0 +1,16 @@
+import constants
+
+
+def formatted_duration(duration, input='hour'):
+    base_duration = float(duration * constants.TIME_UNITS[input])
+    parts = []
+    for unit, value in constants.TIME_UNITS.items()[::-1]:
+        if base_duration >= value:
+            parts.append((base_duration / value, constants.TIME_ABBREVIATIONS[unit]))
+            base_duration %= value
+    return ' '.join('%d %s' % (value, abbr) for value, abbr in parts)
+
+
+filters = {
+    'duration': formatted_duration,
+}

templates/events/list.html

@@ -44,7 +44,7 @@
                         <td><a href="{{ url_for('events.events_detail', event_id=event.id) }}">{{ event.title }}</a></td>
                         <td>{{ event.description }}</td>
                         <td><time class="timeago" datetime="{{ event.start_time_format }}">{{ event.start_time_format }}</time></td>
-                        <td>{{ event.duration / 24 }} days</td>
+                        <td>{{ event.duration|duration }}</td>
                         <td><a href="{{ event.link }}" target="_blank">Website</a></td>
                         {% if enabled_actions %}
                             <td>