Track user as target extra when sharing

tom_targets/base_models.py

@@ -306,6 +306,12 @@ class BaseTarget(models.Model):
 
     :param slope: Asteroid/Comet slope parameter (G or k1)
     :type slope: float
+
+    :param shared_by: If this target was shared to this TOM, the username of the user that shared it.
+    :type shared_by: str
+
+    :param shared_from: If this target was shared to this TOM, the name of the TOM that shared it.
+    :type shared_from: str
     """
 
     SIDEREAL = 'SIDEREAL'
@@ -428,6 +434,12 @@ class Permissions(models.TextChoices):
     slope = models.FloatField(
         null=True, blank=True, verbose_name='Slope parameter', help_text='mag'
     )
+    shared_by = models.CharField(
+        default='', blank=True, verbose_name='Shared by', help_text='Username'
+    )
+    shared_from = models.CharField(
+        default='', blank=True, verbose_name='Shared from', help_text='TOM name'
+    )
 
     objects = models.Manager()
     try:

tom_targets/migrations/0031_basetarget_shared_by_basetarget_shared_from.py

@@ -0,0 +1,23 @@
+# Generated by Django 5.2.13 on 2026-07-16 17:44
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tom_targets', '0030_alter_basetarget_slope'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='basetarget',
+            name='shared_by',
+            field=models.CharField(blank=True, default='', help_text='Username', verbose_name='Shared by'),
+        ),
+        migrations.AddField(
+            model_name='basetarget',
+            name='shared_from',
+            field=models.CharField(blank=True, default='', help_text='TOM name', verbose_name='Shared from'),
+        ),
+    ]

tom_targets/persistent_sharing_serializers.py

@@ -19,7 +19,11 @@ class Meta:
     def create(self, validated_data):
         shared_existing_data = validated_data.pop('share_existing_data', None)
         if shared_existing_data:
-            sharing_feedback = share_target_and_all_data(validated_data['destination'], validated_data['target'])
+            sharing_feedback = share_target_and_all_data(
+                validated_data['destination'],
+                validated_data['target'],
+                validated_data['user'],
+            )
             if 'ERROR' in sharing_feedback.upper():
                 raise serializers.ValidationError(
                     f"Failed to share existing data of target {validated_data['target'].name}: {sharing_feedback}"

tom_targets/sharing.py

@@ -10,14 +10,14 @@
                                       get_destination_target, sharing_feedback_converter)
 
 
-def share_target_and_all_data(share_destination, target):
+def share_target_and_all_data(share_destination, target, user):
     """
     Given a sharing destination, shares the target and all its current dataproducts
     with that destination. Will raise an Exception is any portion of sharing fails.
     :param share_destination: String sharing destination from the DATA_SHARING setting
     :param target: Target instance that should be shared with all its data
     """
-    response = share_target_with_tom(share_destination, {'target': target})
+    response = share_target_with_tom(share_destination, {'target': target}, user=user)
     response_feedback = sharing_feedback_converter(response)
     if 'ERROR' in response_feedback.upper():
         return response_feedback
@@ -52,7 +52,7 @@ def custom_target_to_extras(target_id) -> list[dict]:
     return extra_fields
 
 
-def share_target_with_tom(share_destination, form_data, target_lists=()):
+def share_target_with_tom(share_destination, form_data, target_lists=(), user=None):
     """
     Share a target with a remote TOM.
     :param share_destination: The name of the destination TOM as defined in settings.DATA_SHARING
@@ -96,6 +96,10 @@ def share_target_with_tom(share_destination, form_data, target_lists=()):
         # target extras.
         extra_extras = custom_target_to_extras(serialized_target['id'])
         serialized_target['targetextra_set'].extend(extra_extras)
+        # Basic provenance
+        if user is not None:
+            serialized_target['shared_by'] = user.username
+        serialized_target['shared_from'] = settings.TOM_NAME
         # Remove local User Groups
         serialized_target['groups'] = []
         # Add target lists

tom_targets/views.py

@@ -429,7 +429,7 @@ def form_valid(self, form):
         share_destination = form_data['share_destination']
         selected_data = self.request.POST.getlist("share-box")
         # Share Target with Destination TOM
-        response = share_target_with_tom(share_destination, form_data)
+        response = share_target_with_tom(share_destination, form_data, user=self.request.user)
         sharing_feedback_handler(response, self.request)
         if selected_data:
             # Share Data with Destination TOM
@@ -834,7 +834,12 @@ def form_valid(self, form):
         for target in selected_targets:
             # Share each target individually
             form_data['target'] = Target.objects.get(id=target)
-            response = share_target_with_tom(share_destination, form_data, target_lists=[form_data['target_list']])
+            response = share_target_with_tom(
+                share_destination,
+                form_data,
+                target_lists=[form_data["target_list"]],
+                user=self.request.user,
+            )
             sharing_feedback_handler(response, self.request)
             if data_switch:
                 # If Data sharing request, share all data associated with the target