Convert NDB result to JSON Serializable data

make_ndb_return_data_json_serializable.py

def make_ndb_return_data_json_serializable(data):
    """Build a new dict so that the data can be JSON serializable"""

    result = data.to_dict()
    record = {}

    # Populate the new dict with JSON serializiable values
    for key in result.iterkeys():
        if isinstance(result[key], datetime.datetime):
            record[key] = result[key].isoformat()
            continue
        record[key] = result[key]
    
    # Add the key so that we have a reference to the record
    record['key'] = data.key.id()

    return record


def filter_results(qry):
    """
    Send NDB query result to serialize function if single result, 
    else loop through the query result and serialize records one by one
    """

    result = []

    # check if qry is a list (multiple records) or not (single record)
    if type(qry) != list:
        record = make_ndb_return_data_json_serializable(qry)
        return record

    for q in qry:
        result.append(make_ndb_return_data_json_serializable(q))

    return result

# Usage:
# 
# qry = TodoModel.query().fetch()
# serialized_results = filter_results(qry)
#
# self.response.headers['Content-Type'] = 'text/plain'
# self.response.write(json.dumps(serializable_results))
#
#
# Example:
#
# For a working implemented example of this, see: 
# https://github.com/bengrunfeld/gae-restful-api/blob/master/handlers.py

Thanks! Work excellent!!! Thank you very much!