planetstack/core/xoslib/methods/plus.py

from rest_framework import serializers

""" PlusSerializerMixin

    Implements Serializer fields that are common to all OpenCloud objects. For
    example, stuff related to backend fields.
"""

class PlusSerializerMixin():
    backendIcon = serializers.SerializerMethodField("getBackendIcon")
    backendHtml = serializers.SerializerMethodField("getBackendHtml")

    # This will cause a descendant class to pull in the methods defined
    # above. See rest_framework/serializers.py: _get_declared_fields().
    base_fields = {"backendIcon": backendIcon, "backendHtml": backendHtml}
    # Rest_framework 3.0 uses _declared_fields instead of base_fields
    _declared_fields = {"backendIcon": backendIcon, "backendHtml": backendHtml}

    def getBackendIcon(self, obj):
        return obj.getBackendIcon()

    def getBackendHtml(self, obj):
        return obj.getBackendHtml()