# Remove ExternalIdentifier

* adds removing of ExternalIdentifier entries if a BaseObject is removed from the database
* removes unused import statements
* adds ExternalIdentifier view to admin backend

api/admin.py

@@ -1,5 +1,6 @@
 from django.contrib import admin
 
+from api.models import ExternalIdentifier
 from api.models.token import APIUserToken, OAuthToken
 
 
@@ -28,6 +29,17 @@ class OAuthTokenAdmin(admin.ModelAdmin):
         "refresh_token",
     ]
 
+class ExternalIdentifierAdmin(admin.ModelAdmin):
+    list_display = [
+        "external_id",
+        "internal_id",
+        "created",
+    ]
+    search_fields = [
+        "external_id",
+        "internal_id",
+    ]
 
 admin.site.register(APIUserToken, APITokenAdmin)
 admin.site.register(OAuthToken, OAuthTokenAdmin)
+admin.site.register(ExternalIdentifier, ExternalIdentifierAdmin)

intervention/admin.py

@@ -1,6 +1,6 @@
 from django.contrib import admin
 
-from intervention.models import Intervention, Responsibility, Legal, Revocation, InterventionDocument
+from intervention.models import Intervention
 from konova.admin import AbstractDocumentAdmin, BaseObjectAdmin
 
 

konova/admin.py

@@ -7,10 +7,7 @@ Created on: 22.07.21
 """
 from django.contrib import admin
 
-from konova.models import Geometry, Deadline, GeometryConflict, Parcel, District, Municipal, ParcelGroup, Resubmission
 from konova.sub_settings.lanis_settings import DEFAULT_SRID_RLP
-from konova.utils.message_templates import COMPENSATION_REMOVED_TEMPLATE
-from user.models import UserAction
 
 
 class GeometryAdmin(admin.ModelAdmin):
@@ -123,6 +120,7 @@ class BaseResourceAdmin(admin.ModelAdmin):
 
 class BaseObjectAdmin(BaseResourceAdmin, DeletableObjectMixinAdmin):
     search_fields = [
+        "id",
         "identifier",
         "title",
     ]

konova/models/object.py

@@ -146,6 +146,33 @@ class BaseObject(BaseResource, DeletableObjectMixin):
     class Meta:
         abstract = True
 
+    def delete(self, using=None, keep_parents=False):
+        """ Base deleting of a BaseObject instance
+
+        Args:
+            using:
+            keep_parents:
+
+        Returns:
+
+        """
+        self.__delete_external_identifier()
+        super().delete(using, keep_parents)
+
+    def __delete_external_identifier(self):
+        """ Checks on existing external identifier linking and drops them
+
+        Returns:
+
+        """
+        from api.models import ExternalIdentifier
+        try:
+            external_identifier = ExternalIdentifier.objects.filter(internal_id=self.id)
+            external_identifier.delete()
+        except ObjectDoesNotExist:
+            pass
+
+
     @abstractmethod
     def set_status_messages(self, request: HttpRequest):
         raise NotImplementedError