Add template helpers to work with weekdays.

Advances BiscuIT-App-Alsijil#9.

biscuit/apps/chronos/templatetags/week_helpers.py

@@ -2,7 +2,7 @@ from datetime import date
 
 from django import template
 
-from ..util import week_days
+from ..util import week_days, week_weekday_to_date
 
 
 register = template.Library()
@@ -16,3 +16,13 @@ def week_start(week: int) -> date:
 @register.filter
 def week_end(week: int) -> date:
     return week_days(week)[-1]
+
+
+@register.simple_tag
+def weekday_to_date(week: int, weekday: int) -> date:
+    return week_weekday_to_date(week, weekday)
+
+
+@register.simple_tag
+def today() -> date:
+    return date.today()

biscuit/apps/chronos/util.py

@@ -34,3 +34,7 @@ def current_lesson_periods(when: Optional[datetime] = None) -> models.query.Quer
 
 def week_weekday_from_date(when: date) -> Sequence[int]:
     return (int(when.strftime('%V')), int(when.strftime('%u')))
+
+
+def week_weekday_to_date(week: int, weekday: int) -> date:
+    return week_days(week)[weekday]