Resolve "[Lesson substitution] View with all lesson substitutions in the future"

Closes #11 (closed)

biscuit/apps/chronos/tables.py

@@ -31,3 +31,15 @@ class LessonsTable(tables.Table):
     room = tables.Column(accessor='room')
     edit_substitution = tables.LinkColumn(
         'edit_substitution', args=[A('id'), A('_week')], text=_('Substitution'))
+
+
+class SubstitutionsTable(tables.Table):
+    class Meta:
+        attrs = {'class': 'table table-striped table-bordered table-hover table-responsive-xl'}
+
+    lesson_period = tables.Column(verbose_name=_('Lesson'))
+    lesson__groups = tables.Column(accessor='lesson_period.lesson.group_names', verbose_name=_('Groups'))
+    lesson__teachers = tables.Column(accessor='lesson_period.get_teacher_names', verbose_name=_('Teachers'))
+    lesson__subject = tables.Column(accessor='subject')
+    room = tables.Column(accessor='room')
+    cancelled = tables.BooleanColumn(accessor='cancelled', verbose_name=_('Cancelled'))