''' Basic serializers that do not interact with database. '''
from rest_framework import serializers


class OperationPositionSerializer(serializers.Serializer):
    ''' Operation position. '''
    id = serializers.IntegerField()
    position_x = serializers.FloatField()
    position_y = serializers.FloatField()


class PositionsSerializer(serializers.Serializer):
    ''' Operations position for OperationSchema. '''
    positions = serializers.ListField(
        child=OperationPositionSerializer()
    )