You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

32 lines
1.0 KiB

import json
import logging
import uuid
from datetime import datetime
from django.conf import settings
from django.db import models
from django.utils import timezone as dj_timezone
from django.utils.translation import gettext_lazy as _
lazy_type = type(_('gettext_lazy'))
class ModelJSONFieldEncoder(json.JSONEncoder):
""" 解决一些类型的字段不能序列化的问题 """
def default(self, obj):
str_cls = (models.Model, lazy_type, models.ImageField, uuid.UUID)
if isinstance(obj, str_cls):
return str(obj)
elif isinstance(obj, datetime):
obj = dj_timezone.localtime(obj)
return obj.strftime(settings.DATETIME_DISPLAY_FORMAT)
elif isinstance(obj, (list, tuple)) and len(obj) > 0 \
and isinstance(obj[0], models.Model):
return [str(i) for i in obj]
else:
try:
return super().default(obj)
except TypeError:
logging.error(f'Type error: {type(obj)}')
return str(obj)