Files
session_redis_public/session_redis/json_encoding.py
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2024-06-24 11:58:48 +02:00

43 lines
1.3 KiB
Python

# Copyright 2016-2020 Camptocamp SA
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html)
import json
from datetime import date, datetime
import dateutil
class SessionEncoder(json.JSONEncoder):
"""Encode date/datetime objects
So that we can later recompose them if they were stored in the session
"""
def default(self, obj):
if isinstance(obj, datetime):
return {"_type": "datetime_isoformat", "value": obj.isoformat()}
elif isinstance(obj, date):
return {"_type": "date_isoformat", "value": obj.isoformat()}
elif isinstance(obj, set):
return {"_type": "set", "value": tuple(obj)}
return json.JSONEncoder.default(self, obj)
class SessionDecoder(json.JSONDecoder):
"""Decode json, recomposing recordsets and date/datetime"""
def __init__(self, *args, **kwargs):
super().__init__(*args, object_hook=self.object_hook, **kwargs)
def object_hook(self, obj):
if "_type" not in obj:
return obj
type_ = obj["_type"]
if type_ == "datetime_isoformat":
return dateutil.parser.parse(obj["value"])
elif type_ == "date_isoformat":
return dateutil.parser.parse(obj["value"]).date()
elif type_ == "set":
return set(obj["value"])
return obj