67 lines
3.2 KiB
Python
67 lines
3.2 KiB
Python
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from rest_framework import serializers
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from .models import Device, Sistema, sistemas_por_cliente
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from Clientes.models import Clientes
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from django.db.models import Q
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class SistemaPrimaryKeyRelatedField(serializers.PrimaryKeyRelatedField):
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def to_internal_value(self,data):
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try:
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return Sistema.objects.get(nombre_sistema=data)
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except Sistema.DoesNotExist:
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raise serializers.ValidationError("Sistema no existe")
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class ClientPrimaryKeyRelatedField(serializers.PrimaryKeyRelatedField):
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def to_internal_value(self,data):
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try:
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return Clientes.objects.get(RFC=data)
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except Clientes.DoesNotExist:
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raise serializers.ValidationError("No existe Cliente")
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class DeviceSerializer(serializers.ModelSerializer):
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client = ClientPrimaryKeyRelatedField(queryset=Clientes.objects.all())
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sistema = SistemaPrimaryKeyRelatedField(queryset=Sistema.objects.all())
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#this read_only fields not are required to be updated in the serializer.
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#however in the model are required in other instantiation like queries, forms, are required to add it
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token = serializers.CharField(read_only=True)
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macAddress = serializers.CharField(read_only=True)
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class Meta:
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model =Device
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fields = ('client','sistema','device_name','device_os', 'ip_address','token', 'macAddress', 'database',)
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#this assign the masAddress value from
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#the request context passed throught argument in the view to the serializer
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#given that the macAddres field are read_Only in the beggining of this serialazer
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#we need passing the post data to the creation instance before commited to the DB
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def create(self, validated_data):
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mac_address = self.context['request'].data.get('macAddress')
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# sistema = validated_data['sistema']
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# client = validated_data['client']
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# existing_devices = Device.objects.filter(
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# Q(sistema=sistema)
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# & Q(client=client)
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# & Q(macAddress__icontains=mac_address)
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# & Q(database=self.context['request'].data.get('database'))
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# )
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# print('self.context[request].data',self.context['request'].data)
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# if existing_devices.exists():
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# # A device with the same macAddress already exists for the given sistema and client
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# # Get the number of existing devices and add 1 to create a new suffix
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# suffix = existing_devices.count() + 1
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# mac_address += f'_{suffix}'
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validated_data['macAddress']= mac_address
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return super().create(validated_data)
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def validate(self, data):
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sistema = data.get('sistema', None)
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client = data.get('client', None)
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try:
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sistemaxCli = sistemas_por_cliente.objects.get(id_sistema=sistema,cliente=client)
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except sistemas_por_cliente.DoesNotExist:
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raise serializers.ValidationError('No existe licencia para este sistema y/o cliente')
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if sistemaxCli.num_licencias <= Device.objects.filter(sistema=sistemaxCli.id_sistema, client=client).count():
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raise serializers.ValidationError(f"No hay licencias disponibles para este sistema:{sistema} y cliente:{client}")
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return data |