[ch38605]: limit export access log to the last access

CHANGES

@@ -1,6 +1,11 @@
+4.7.13
+----
+* ExportAccessLog usage has been simplified by keeping the last access as the sole purpose 
+  it to see if an export is in use at all. 
+
 4.7.12
 ----
-Formula for SpotCheckFindings.pending_unsupported_amount has been updated as below;
+* Formula for SpotCheckFindings.pending_unsupported_amount has been updated as below;
     = audit_spotcheck.total_amount_of_ineligible_expenditure
       audit_engagement.additional_supporting_documentation_provided
       audit_engagement.justification_provided_and_accepted
@@ -9,19 +14,19 @@ Formula for SpotCheckFindings.pending_unsupported_amount has been updated as bel
 
 4.7.11
 ----
-CI pipline improvements for version tagging.
+* CI pipline improvements for version tagging.
 
 4.7.10
 ----
-Further improve Celery task failure error report
+* Further improve Celery task failure error report
 
 4.7.9
 ----
-Make groups parameter name consistent 
+* Make groups parameter name consistent 
 
 
 ----
-Hotfix for export access log to handle non-standard  date format
+* Hotfix for export access log to handle non-standard  date format
 
 4.7.6
 ----

src/etools_datamart/__init__.py

@@ -1,3 +1,3 @@
 NAME = "etools-datamart"
-VERSION = __version__ = "4.7.12"
+VERSION = __version__ = "4.7.13"
 __author__ = ""

src/unicef_rest_framework/models/export.py

@@ -149,7 +149,7 @@ def log_access(cls, export, username):
 
         try:
             access_log = cls.objects.get(export=export)
-            access_log.access_history.append(log_entry)
+            access_log.access_history = [log_entry]
             access_log.save()
         except cls.DoesNotExist:
             cls.objects.create(export=export, access_history=[log_entry])