Don't know how to use it with DRF

[mpvillafranca]

I've got some models with attributes which are SelectMultipleField. I'm using Django Rest Framework to serialize that models and send the data to an AngularJS app, but I've got a problem when I'm trying to update that fields via JSON. When I get the data from the server, I'm receiving an array of strings, but when I sent the update data back to the server with the same format, I'm getting an error: "This isn't a valid option". I've also tried to parse the data to strings splited by commas but it doesn't work either.... Any ideas of what I'm doing wrong?

• Model:

class Hueco(models.Model):

    class ProteccionType(DjangoChoices):
        Ninguno = ChoiceItem(label=u'Ninguno', value='ninguno')
        Retranqueo = ChoiceItem(label=u'Retranqueo', value='retranqueo')
        Voladizo = ChoiceItem(label=u'Voladizo', value='voladizo')
        Lateral_izquierdo = ChoiceItem(label=u'Lateral Izquierdo', value='lateral_izquierdo')
        Lateral_derecho = ChoiceItem(label=u'Lateral Derecho', value='lateral_derecho')
        Toldo = ChoiceItem(label=u'Toldo', value='toldo')
        Lamas_verticales = ChoiceItem(label=u'Lamas Verticales', value='lamas_verticales')
        Lamas_horizontales = ChoiceItem(label=u'Lamas Horizontales', value='lamas_horizontales')
        Laminas = ChoiceItem(label=u'Láminas', value='laminas')
        Cortinas = ChoiceItem(label=u'Cortinas', value='cortinas')

    tipo_proteccion = SelectMultipleField(
        max_length=150,
        choices=ProteccionType.choices,
        default=ProteccionType.Ninguno
    )

• Serializer:

class HuecoSerializer(serializers.ModelSerializer):
    class Meta:
        model = Hueco
        fields = ('id', 'tipo_proteccion' )

[metalhand91]

Add new serializer field:

class LegacyMultipleChoiceField(serializers.MultipleChoiceField):
    def to_internal_value(self, value):
        return ','.join(value)

serializer:

class HuecoSerializer(serializers.ModelSerializer):
    tipo_proteccion = LegacyMultipleChoiceField(choices=your_choises)

    class Meta:
        model = Hueco
        fields = ('id', 'tipo_proteccion' )