Make Schedule.last_date nullable

program/migrations/0054_alter_schedule_last_date.py

+# Generated by Django 3.2.18 on 2023-04-16 22:03
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('program', '0053_auto_20230411_1855'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='schedule',
+            name='last_date',
+            field=models.DateField(help_text='End date of schedule.', null=True),
+        ),
+    ]

program/models.py

@@ -348,7 +348,7 @@ class Schedule(models.Model):
         default=False,
         help_text="Whether the schedule is a repetition.",
     )
-    last_date = models.DateField(help_text="End date of schedule.")
+    last_date = models.DateField(help_text="End date of schedule.", null=True)
     rrule = models.ForeignKey(
         RRule,
         on_delete=models.CASCADE,