sharix-sports-webservice-running/admin/participant.py

from django.contrib import admin
from webservice_running.models import Participant

@admin.register(Participant)
class ParticipantAdmin(admin.ModelAdmin):
    list_display = ('id', 'sportsman', 'event_participant', 'is_finished')
    list_filter = ('sportsman', 'event_participant', 'is_finished')