KeyError Post DjangoRestFramework

Question

I'm new on Django Rest Framework and when I want to POST data I get a error: KeyError: 'id_area' I do not know what I'm doing wrong. Here's my code:

in my models.py

class Area(models.Model):
id_area = models.AutoField(primary_key=True)
APM = 'apm'
BUSINESS = 'business'
DESARROLLO = 'desarrollo'
SISTEMAS = 'sistemas'

ATENTUSIANOS_CHOICES = (
    (APM, 'Apm'),
    (BUSINESS, 'Business'),
    (DESARROLLO, 'Desarrollo'),
    (SISTEMAS, 'Sistemas'),
)

nombre = models.CharField(max_length=255, choices=ATENTUSIANOS_CHOICES)

class Meta:
    verbose_name = 'Área'
    verbose_name_plural = 'Áreas'

def __str__(self):
    return self.nombre

class Atentusiano(models.Model):
id_atentusiano = models.AutoField(primary_key=True)
nombre = models.CharField(max_length=255, blank=False, null=False)
apellido = models.CharField(max_length=255, blank=False, null=False)
correo = models.CharField(max_length=255, blank=False, null=False, unique=True)
anexo = models.CharField(max_length=255, blank=True, null=True)
area = models.ForeignKey(Area, related_name='areas', on_delete=models.CASCADE)

class Meta:
    verbose_name = 'Atentusiano'
    verbose_name_plural = 'Atentusianos'
    ordering = ['nombre']

def __str__(self):
    return self.nombre + ' ' + self.apellido

in my serializers.py

class AreaSerializer(serializers.ModelSerializer):
areas = serializers.CharField(read_only=True)
class Meta:
    model = Area
    fields = ('id_area', 'nombre', 'areas')

class AtentusianoSerializer(serializers.ModelSerializer):
atentusianos = serializers.CharField(read_only=True)
area = serializers.CharField(source='area.nombre', read_only=True)
id_area = serializers.CharField(source='area.id_area')

class Meta:
    model = Atentusiano
    fields = ['id_atentusiano', 'nombre', 'apellido', 'correo', 'anexo', 'id_area', 'area', 'atentusianos']

def create(self, validated_data):
    area_data = validated_data.pop('id_area')
    area = models.Area.objects.create(**area_data)
    atentusiano = models.Atentusiano.objects.create(area=area, **validated_data)
    return atentusiano

And in my views.py

class AtentusianoView(viewsets.ModelViewSet):
queryset = Atentusiano.objects.all()
serializer_class = AtentusianoSerializer

class AreaView(viewsets.ModelViewSet):
queryset = Area.objects.all()
serializer_class = AreaSerializer

The problem is that when I want to Post data, for example: { "nombre": "name", "apellido": "lastname", "correo": "email@gmail.com", "anexo": "1364", "id_area": "1" }

i got this error area_data = validated_data.pop('id_area') KeyError: 'id_area'

I need help please

Answer 1

you should pop like this,

class AtentusianoSerializer(serializers.ModelSerializer):
    .....
    .....

class Meta:
    model = Atentusiano
    fields = ['id_atentusiano', 'nombre', 'apellido', 'correo', 'anexo', 'id_area', 'area', 'atentusianos']

def create(self, validated_data):
    id_area = validated_data.pop('area')['id_area'] # here the correction
    area = Area.objects.create(id_area=id_area) # an additional correction
    atentusiano = Atentusiano.objects.create(area=area, **validated_data)
    return atentusiano

EDIT: As id_area value, you are passing a string instead of an integer which will through another error. Also not,

area = models.Area.objects.create(**area_data)

it should be,

area = Area.objects.create(id_area=id_area)