ilab_gestion_backend/project/api/views/red_transporte.py

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from rest_framework import viewsets
from rest_framework.response import Response
from rest_framework.decorators import action
from django_filters.rest_framework import DjangoFilterBackend
from rest_framework import status
from .. import models , serializers
from django.db import models as dj_models
class RedTransporteViewSet(viewsets.ModelViewSet):
queryset = models.RedTransporte.objects.all()
serializer_class = serializers.RedTransporteSerializer
filter_backends = [DjangoFilterBackend]
filterset_fields = ['id_red', 'nombre_red', 'descripcion','vigente']
def create(self, request, *args, **kwargs):
# se indica que si no se indico el id, entonces sea el maximo + 1
if not request.data.get('id_red', None):
max_id = models.RedTransporte.objects.aggregate(dj_models.Max('id_red'))['id_red__max']
new_id = max_id + 1 if max_id is not None else 1
request.data['id_red'] = new_id
return super().create(request, *args, **kwargs)