#31 API POST Compensation

* adds support for POST of new compensations
* adds shared_users property to BaseObject and Compensation to simplify fetching of shared users (Compensation inherits from intervention)
* extends compensation admin index
* modifies compensation manager which led to invisibility of deleted entries in the admin backend
* fixes bug in sanitize_db.py where CREATED useractions would be removed if they are not found on any log but still are used on the .created attribute of the objects

compensation/admin.py

@@ -29,6 +29,7 @@ class CompensationAdmin(BaseObjectAdmin):
         "identifier",
         "title",
         "created",
+        "deleted",
     ]
 
 

compensation/managers.py

@@ -35,9 +35,7 @@ class CompensationManager(models.Manager):
 
     """
     def get_queryset(self):
-        return super().get_queryset().filter(
-            deleted__isnull=True,
-        ).select_related(
+        return super().get_queryset().select_related(
             "modified",
             "intervention",
             "intervention__recorded",

compensation/models/compensation.py

@@ -245,6 +245,15 @@ class Compensation(AbstractCompensation, CEFMixin, CoherenceMixin):
         # Compensations inherit their shared state from the interventions
         return self.intervention.is_shared_with(user)
 
+    @property
+    def shared_users(self) -> QuerySet:
+        """ Shortcut for fetching the users which have shared access on this object
+
+        Returns:
+            users (QuerySet)
+        """
+        return self.intervention.users.all()
+
     def get_LANIS_link(self) -> str:
         """ Generates a link for LANIS depending on the geometry