added migration for converting pumping schema

core/migrations/0029_alter_pumping_options_remove_pumping_time_and_more.py

@@ -0,0 +1,60 @@
+# Generated by Django 4.2.2 on 2023-06-16 20:06
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+def set_pumping_start_end_values(apps, schema_editor):
+    # The model must be imported to ensure its overridden `save` method is run.
+    from core.models import Pumping
+
+    for pumping in Pumping.objects.all():
+        pumping.start = pumping.time
+        pumping.end = pumping.start
+        pumping.save()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("core", "0028_alter_sleep_options_remove_sleep_napping_sleep_nap"),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="pumping",
+            options={
+                "default_permissions": ("view", "add", "change", "delete"),
+                "ordering": ["-start"],
+                "verbose_name": "Pumping",
+                "verbose_name_plural": "Pumping",
+            },
+        ),
+        migrations.AddField(
+            model_name="pumping",
+            name="start",
+            field=models.DateTimeField(
+                default=django.utils.timezone.localtime, verbose_name="Start time"
+            ),
+        ),
+        migrations.AddField(
+            model_name="pumping",
+            name="end",
+            field=models.DateTimeField(
+                default=django.utils.timezone.localtime, verbose_name="End time"
+            ),
+        ),
+        migrations.AddField(
+            model_name="pumping",
+            name="duration",
+            field=models.DurationField(
+                editable=False, null=True, verbose_name="Duration"
+            ),
+        ),
+        migrations.RunPython(
+            set_pumping_start_end_values, reverse_code=migrations.RunPython.noop
+        ),
+        migrations.RemoveField(
+            model_name="pumping",
+            name="time",
+        ),
+    ]