【补充】Django自带的序列化组件

【11.0补充】Django自带的序列化组件

【一】准备数据

from django.db import models


# Create your models here.
class User(models.Model):
    username = models.CharField(max_length=32, verbose_name="姓名")
    age = models.IntegerField(verbose_name="年龄")
    gender_choices = (
        (1, 'male'),
        (2, 'female'),
        (3, 'others')
    )
    gender = models.IntegerField(choices=gender_choices, verbose_name="性别")

【二】需求

  • 在前端获取到后端用户表里面的所有数据，并且格式是列表套字典

【1.0】简单版本

  • 后端
def ab_ser(request):
    user_queryset = models.User.objects.all()
    # 返回数据格式：[{},{},,{},{},{},{}]
    user_list = []
    for user in user_queryset:
        tmp = {
            'username': user.username,
            'password': user.age,
            'gender': user.get_gender_display(),
        }
        user_list.append(tmp)
    return JsonResponse(user_list, safe=False)
    # return render(request, 'ab_ser.html', locals())
  • 前端
<body>

{% for user_obj in user_queryset %}
    <p>{{ user_obj.name }}</p>
{% endfor %}


</body>
  • 前端接收到的数据展示
[
{"username": "dream", "password": 18, "gender": "male"}, 
{"username": "meng", "password": 28, "gender": "female"}, 
{"username": "hope", "password": 38, "gender": "others"}
]

【2.0】升级版

def ab_ser(request):
    user_queryset = models.User.objects.all()
    res = serializers.serialize('json', user_queryset)
    '''
    serializers 模块内部会帮我们将数据全部变成JSON格式的字符串，并且内部非常的全面
    '''
    return HttpResponse(res)
  • 前端返回的到的数据
[
{
	"model": "app01.user", 
	"pk": 1, 
	"fields": {"username": "dream", "age": 18, "gender": 1}}, 
{
	"model": "app01.user", 
	"pk": 2, 
	"fields": {"username": "meng", "age": 28, "gender": 2}}, 
{
	"model": "app01.user", 
	"pk": 3, 
	"fields": {"username": "hope", "age": 38, "gender": 3}}
]
posted @ 2023-07-17 11:33  Chimengmeng  阅读(8)  评论(0)  编辑  收藏  举报