Add Import Export Time Stamped Admin class to all apps.

apps/hosts/admin.py

@@ -1,21 +1,19 @@
 from django.contrib import admin
 
-from base.admin import TimeStampedAdmin
+from base.admin import ImportExportTimeStampedAdmin
 
 from .models import (ChallengeHost,
                      ChallengeHostTeam)
 
-from import_export.admin import ImportExportModelAdmin
-
 
 @admin.register(ChallengeHostTeam)
-class ChallengeHostTeamModelAdmin(TimeStampedAdmin, ImportExportModelAdmin):
+class ChallengeHostTeamModelAdmin(ImportExportTimeStampedAdmin):
     list_display = ("team_name", "created_by")
     search_fields = ("team_name", "created_by")
 
 
 @admin.register(ChallengeHost)
-class ChallengeHostAdmin(TimeStampedAdmin, ImportExportModelAdmin):
+class ChallengeHostAdmin(ImportExportTimeStampedAdmin):
     list_display = ("user", "team_name", "status", "permissions")
     list_filter = ("status", "permissions")
     search_fields = ("user", "team_name")

apps/jobs/admin.py

@@ -1,14 +1,12 @@
 from django.contrib import admin
 
-from base.admin import TimeStampedAdmin
+from base.admin import ImportExportTimeStampedAdmin
 
 from .models import Submission
 
-from import_export.admin import ImportExportModelAdmin
-
 
 @admin.register(Submission)
-class SubmissionAdmin(TimeStampedAdmin, ImportExportModelAdmin):
+class SubmissionAdmin(ImportExportTimeStampedAdmin):
     list_display = ('participant_team', 'challenge_phase', 'created_by', 'status', 'is_public',
                     'submission_number', 'submitted_at', 'execution_time', 'input_file', 'stdout_file', 'stderr_file',
                     'submission_result_file', 'submission_metadata_file', )

apps/participants/admin.py

@@ -1,13 +1,12 @@
 from django.contrib import admin
 
-from base.admin import TimeStampedAdmin
+from base.admin import ImportExportTimeStampedAdmin
 from .models import (
     Participant,
     ParticipantTeam,
 )
 
 from import_export import resources
-from import_export.admin import ImportExportModelAdmin
 
 
 class ParticipantResource(resources.ModelResource):
@@ -19,7 +18,7 @@ class Meta:
 
 
 @admin.register(Participant)
-class ParticipantAdmin(TimeStampedAdmin, ImportExportModelAdmin):
+class ParticipantAdmin(ImportExportTimeStampedAdmin):
     """
     An abstract base class which provides an
     interface to display user and team status.
@@ -31,7 +30,7 @@ class ParticipantAdmin(TimeStampedAdmin, ImportExportModelAdmin):
 
 
 @admin.register(ParticipantTeam)
-class ParticipantTeamAdmin(TimeStampedAdmin, ImportExportModelAdmin):
+class ParticipantTeamAdmin(ImportExportTimeStampedAdmin):
     """
     A class which provides interface to display
     and filter team names.

apps/web/admin.py

@@ -1,18 +1,18 @@
 from django.contrib import admin
 
-from base.admin import TimeStampedAdmin
+from base.admin import ImportExportTimeStampedAdmin
 
 from .models import Contact, Team
 
 
 @admin.register(Contact)
-class ContactAdmin(TimeStampedAdmin):
+class ContactAdmin(ImportExportTimeStampedAdmin):
     list_display = ("name", "email", "message",)
     search_fields = ("email",)
 
 
 @admin.register(Team)
-class TeamAdmin(admin.ModelAdmin):
+class TeamAdmin(ImportExportTimeStampedAdmin):
     list_filter = ("team_type",)
     list_display = ("name", "email", "team_type",)
     search_fields = ("email", "name",)