Change the UK Staff Location filter to only show DBT locations

Remove the unique_location_name constraint

src/peoplefinder/forms/profile_edit.py

@@ -277,8 +277,7 @@ class Meta:
         queryset=UkStaffLocation.objects.all()
         .filter(
             organisation__in=[
-                "Department for International Trade",
-                "Department for Business, Energy and Industrial Strategy",
+                "Department for Business and Trade",
             ]
         )
         .order_by(

src/peoplefinder/migrations/0113_remove_ukstafflocation_unique_location_name_and_more.py

@@ -0,0 +1,21 @@
+# Generated by Django 4.1.10 on 2023-09-21 11:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("peoplefinder", "0112_alter_person_preferred_first_name"),
+    ]
+
+    operations = [
+        migrations.RemoveConstraint(
+            model_name="ukstafflocation",
+            name="unique_location_name",
+        ),
+        migrations.AlterField(
+            model_name="ukstafflocation",
+            name="code",
+            field=models.CharField(max_length=255, unique=True),
+        ),
+    ]

src/peoplefinder/models.py

@@ -174,11 +174,10 @@ class UkStaffLocation(IngestedModel):
     class Meta:
         constraints = [
             models.UniqueConstraint(fields=["code"], name="unique_location_code"),
-            models.UniqueConstraint(fields=["name"], name="unique_location_name"),
         ]
         ordering = ["name"]
 
-    code = models.CharField(max_length=255)
+    code = models.CharField(max_length=255, unique=True)
     name = models.CharField(max_length=255)
     city = models.CharField(max_length=255)
     organisation = models.CharField(max_length=255)