[
  {
    "title": "test",
    "address": "55.99752311227003,49.08959250252893"
  },
  {
    "title": "test122",
    "address": "63.08891623673952,46.243883499999946"
  },
  {
    "title": "test1111",
    "address": "55.69684742706125,37.59635133512744"
  },
  {
    "title": "kgeu",
    "address": "55.816852257889856,49.09529045886616"
  }
]

[
 {
    "title": "kgeu",
    "address": [55.816852257889856,49.09529045886616]
 }
]

REST_FRAMEWORK = {
'DEFAULT_RENDERER_CLASSES': (
    'rest_framework.renderers.JSONRenderer',
    'rest_framework.renderers.BrowsableAPIRenderer',
),
 'DEFAULT_PARSER_CLASSES': (
    'rest_framework.parsers.JSONParser',
)
}

class FactorySerializer(serializers.ModelSerializer):

    class Meta:
        model = Factory
        fields = ['title', 'address']

class FactoryListView(generics.ListCreateAPIView):
    queryset = Factory.objects.all()
    serializer_class = FactorySerializer

class FactorySerializer(serializers.ModelSerializer):

    address = serializers.SerializerMethodField()

    class Meta:
        model = Factory
        fields = ['title', 'address']

    def get_address(self, obj):
        return [float(i) for i in obj.address.split(',')]