Make systemic treatments an array field

We actually want to allow multiple options for this.

Author: MatMoore

manage_breast_screening/mammograms/presenters/breast_cancer_history_item_presenter.py

@@ -24,7 +24,10 @@ def __init__(self, breast_cancer_history_item):
         self.left_breast_treatment = self._format_multiple_choices(
             self._item.left_breast_treatment, BreastCancerHistoryItem.Treatment
         )
-        self.systemic_treatments = self._item.get_systemic_treatments_display()
+        self.systemic_treatments = self._format_multiple_choices(
+            self._item.systemic_treatments,
+            BreastCancerHistoryItem.SystemicTreatment,
+        )
         self.additional_details = nl2br(self._item.additional_details)
 
     @property

manage_breast_screening/participants/migrations/0043_alter_breastcancerhistoryitem_systemic_treatments.py

@@ -0,0 +1,62 @@
+# Generated by Django 5.2.8 on 2025-11-17 16:08
+
+import django.contrib.postgres.fields
+from django.db import migrations, models
+
+import manage_breast_screening.nhsuk_forms.validators
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("participants", "0042_alter_implantedmedicaldevicehistoryitem_device"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="breastcancerhistoryitem",
+            name="systemic_treatments2",
+            field=django.contrib.postgres.fields.ArrayField(
+                base_field=models.CharField(
+                    choices=[
+                        ("CHEMOTHERAPY", "Chemotherapy"),
+                        ("HORMONE_THERAPY", "Hormone therapy"),
+                        ("OTHER", "Other"),
+                        ("NO_SYSTEMIC_TREATMENTS", "No systemic treatments"),
+                    ]
+                ),
+                default=list,
+                size=None,
+                validators=[
+                    manage_breast_screening.nhsuk_forms.validators.ExcludesOtherOptionsValidator(
+                        "No systemic treatments", "No systemic treatments"
+                    )
+                ],
+            ),
+        ),
+        migrations.AlterField(
+            model_name="breastcancerhistoryitem",
+            name="systemic_treatments",
+            field=models.CharField(
+                choices=[
+                    ("CHEMOTHERAPY", "Chemotherapy"),
+                    ("HORMONE_THERAPY", "Hormone therapy"),
+                    ("OTHER", "Other"),
+                    ("NO_SYSTEMIC_TREATMENTS", "No systemic treatments"),
+                ],
+                db_default="NO_SYSTEMIC_TREATMENTS",  # add a default so the migration is reversable
+            ),
+        ),
+        migrations.RunSQL(
+            sql="update participants_breastcancerhistoryitem set systemic_treatments2 = ARRAY[systemic_treatments]",
+            reverse_sql="update participants_breastcancerhistoryitem set systemic_treatments = systemic_treatments2[1]",
+        ),
+        migrations.RemoveField(
+            model_name="breastcancerhistoryitem", name="systemic_treatments"
+        ),
+        migrations.RenameField(
+            model_name="breastcancerhistoryitem",
+            old_name="systemic_treatments2",
+            new_name="systemic_treatments",
+        ),
+    ]

manage_breast_screening/participants/migrations/max_migration.txt

@@ -1 +1 @@
-0042_alter_implantedmedicaldevicehistoryitem_device
+0043_alter_breastcancerhistoryitem_systemic_treatments

manage_breast_screening/participants/models/breast_cancer_history_item.py

@@ -96,7 +96,16 @@ class InterventionLocation(models.TextChoices):
         ],
     )
 
-    systemic_treatments = models.CharField(choices=SystemicTreatment)
+    systemic_treatments = ArrayField(
+        base_field=models.CharField(choices=SystemicTreatment),
+        default=list,
+        validators=[
+            ExcludesOtherOptionsValidator(
+                SystemicTreatment.NO_SYSTEMIC_TREATMENTS.label,
+                SystemicTreatment.NO_SYSTEMIC_TREATMENTS.label,
+            )
+        ],
+    )
     systemic_treatments_other_treatment_details = models.CharField(
         blank=True, null=False, default=""
     )

manage_breast_screening/participants/tests/factories.py

@@ -173,9 +173,9 @@ class Meta:
     right_breast_other_surgery = [BreastCancerHistoryItem.Surgery.NO_SURGERY]
     left_breast_treatment = [BreastCancerHistoryItem.Treatment.NO_RADIOTHERAPY]
     right_breast_treatment = [BreastCancerHistoryItem.Treatment.NO_RADIOTHERAPY]
-    systemic_treatments = (
+    systemic_treatments = [
         BreastCancerHistoryItem.SystemicTreatment.NO_SYSTEMIC_TREATMENTS
-    )
+    ]
 
     intervention_location = (
         BreastCancerHistoryItem.InterventionLocation.EXACT_LOCATION_UNKNOWN
@@ -195,6 +195,7 @@ class Meta:
     surgery_reason = MastectomyOrLumpectomyHistoryItem.SurgeryReason.OTHER_REASON
     additional_details = ""
 
+
 class CystHistoryItemFactory(DjangoModelFactory):
     class Meta:
         model = models.CystHistoryItem