uncloud-mravi/uncloud/ungleich_service/serializers.py

from rest_framework import serializers
from .models import MatrixServiceProduct
from uncloud_vm.serializers import ManagedVMProductSerializer
from uncloud_vm.models import VMProduct
from uncloud_pay.models import RecurringPeriod

class MatrixServiceProductSerializer(serializers.ModelSerializer):
    vm = ManagedVMProductSerializer()

    # Custom field used at creation (= ordering) only.
    recurring_period = serializers.ChoiceField(
            choices=MatrixServiceProduct.allowed_recurring_periods())

    class Meta:
        model = MatrixServiceProduct
        fields = ['uuid', 'order', 'owner', 'status', 'vm', 'domain', 'recurring_period']
        read_only_fields = ['uuid', 'order', 'owner', 'status']