Django 之 序列化
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
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from django.core import serializers ret = models.BookType.objects. all () data = serializers.serialize( "json" , ret) |
json.dumps
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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 | +-------------------+---------------+ '''