Preferred alias can be changed by user

attribute name in API is 'current_identifier'

viewer/migrations/0081_alter_compound_current_identifier.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.2.25 on 2024-10-23 15:20
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('viewer', '0080_alter_compoundidentifier_compound'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='compound',
+            name='current_identifier',
+            field=models.OneToOneField(blank=True, help_text='The preferred alias for this compound.', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to='viewer.compoundidentifier'),
+        ),
+    ]

viewer/models.py

@@ -264,7 +264,7 @@ class Compound(models.Model):
     inchi = models.TextField(unique=False, db_index=True)
     smiles = models.CharField(max_length=255, db_index=True)
     compound_code = models.TextField(null=True)
-    current_identifier = models.ForeignKey(
+    current_identifier = models.OneToOneField(
         'CompoundIdentifier',
         blank=True,
         null=True,

viewer/serializers.py

@@ -245,6 +245,26 @@ class Meta:
             "description",
             "comments",
         )
+        extra_kwargs = {
+            "id": {"read_only": True},
+            "inchi": {"read_only": True},
+            "smiles": {"read_only": True},
+            "current_identifier": {"read_only": False},
+            "all_identifiers": {"read_only": True},
+            "project_id": {"read_only": True},
+            "compound_code": {"read_only": True},
+            "inspirations": {"read_only": True},
+            "description": {"read_only": True},
+            "comments": {"read_only": True},
+        }
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        # Limit the queryset to only identifiers related to this compound
+        if self.instance:
+            self.fields[
+                'current_identifier'
+            ].queryset = self.instance.all_identifiers.all()
 
 
 class SiteObservationSerializer(serializers.ModelSerializer):

viewer/views.py

@@ -336,7 +336,7 @@ def patch(self, request, pk):
             )
 
 
-class CompoundView(ISPyBSafeQuerySet):
+class CompoundView(mixins.UpdateModelMixin, ISPyBSafeQuerySet):
     """Compounds (api/compounds)"""
 
     queryset = models.Compound.filter_manager.filter_qs()