Django之序列化
关于Django中的序列化主要应用在将数据库中检索的数据返回给客户端用户，特别的Ajax请求一般返回的为Json格式。
serializers
|
1
2
3
4
5
|
from django.core import serializers
ret = models.BookType.objects.all()
data = serializers.serialize("json", ret)
|
json.dumps
|
1
2
3
4
5
6
7
8
|
import json
#ret = models.BookType.objects.all().values('caption')ret = models.BookType.objects.all().values_list('caption')
ret=list(ret)
result = json.dumps(ret)
|
由于json.dumps时无法处理datetime日期，所以可以通过自定义处理器来做扩展 如：
import json
from datetime import date
from datetime import datetime d=datetime.now() class JsonCustomEncoder(json.JSONEncoder): def default(self, field): if isinstance(field, datetime):
return field.strftime('%Y-%m-%d %H:%M---%S')
elif isinstance(field, date):
return field.strftime('%Y-%m-%d')
else:
return json.JSONEncoder.default(self, field) ds = json.dumps(d, cls=JsonCustomEncoder) print(ds)
print(type(ds)) '''
Supports the following objects and types by default: +-------------------+---------------+
| Python | JSON |
+===================+===============+
| dict | object |
+-------------------+---------------+
| list, tuple | array |
+-------------------+---------------+
| str | string |
+-------------------+---------------+
| int, float | number |
+-------------------+---------------+
| True | true |
+-------------------+---------------+
| False | false |
+-------------------+---------------+
| None | null |
+-------------------+---------------+ '''