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import bson
from flask import url_for
from marshmallow import Schema, fields
# Map ObjectId to String
Schema.TYPE_MAPPING[bson.ObjectId] = fields.String
class ObjectId(fields.Field):
def _serialize(self, value, attr, obj, **kwargs):
if value is None:
return value
return str(value)
def _deserialize(self, value, attr, data, **kwargs):
if value is None:
return value
return bson.ObjectId(value)
class FieldSchema(Schema):
name = fields.String(required=True)
value = fields.String(required=True)
# type
class NodeSchema(Schema):
_id = ObjectId(dump_only=True, data_key='id')
name = fields.String(required=True)
parent_id = ObjectId(default=None)
_fields = fields.List(fields.Nested(FieldSchema()), default=[], attribute='fields', data_key='fields')
# These are not set by the caller, but by the API endpoint
created_at = fields.AwareDateTime(dump_only=True)
updated_at = fields.AwareDateTime(dump_only=True)
# Not actual stored fields
parent = fields.Nested(lambda: NodeSchema(), dump_only=True)
children = fields.List(fields.Nested(lambda: NodeSchema()), dump_only=True)
url = fields.Function(lambda obj: url_for('.node', node_id=obj['_id']), dump_only=True)
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