目录
一、介绍
二、Django序列化的三种方式
三、序列化错误信息
一、介绍
关于Django中的序列化主要应用在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
二、Django序列化的三种方式
1.serializers
from django.core import serializers
ret = models.BookType.objects.all()
data = serializers.serialize("json", ret)
2.json.dumps
import json
# ret = models.BookType.objects.all().values("caption")
ret = models.BookType.objects.all().values_list("caption")
ret = list(ret)
result = json.dumps(ret)
3.由于json.dumps时无法处理detetime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 class JsonCustomEncoder(json.JSONEncoder): def default(self, field): if isinstance(field, datetime): return o.strftime(‘%Y-%m-%d %H:%M:%S‘) elif isinstance(field, date): return o.strftime(‘%Y-%m-%d‘) else: return json.JSONEncoder.default(self, field) # ds = json.dumps(d, cls=JsonCustomEncoder)
三、序列化错误信息
account.py
#!/usr/bin/env python
# _*_ coding:utf-8 _*_
# Author: JiaChen
from django.shortcuts import render, HttpResponse, redirect
from django import forms
from django.forms import widgets
from django.forms import fields
import json
class LoginForm(forms.Form):
username = fields.CharField()
password = fields.CharField(
max_length=64,
min_length=12
)
from django.core.exceptions import ValidationError
class JsonCustomEncoder(json.JSONEncoder):
def default(self, field):
if isinstance(field, ValidationError):
return {"code": field.code, "messages": field.messages}
else:
return json.JSONEncoder.default(self, field)
def login(request):
if request.method == "GET":
return render(request, "login.html")
elif request.method == "POST":
ret = {"status": True, "error": None, "data": None}
obj = LoginForm(request.POST)
if obj.is_valid():
print(obj.cleaned_data)
else:
ret["error"] = obj.errors.as_data()
result = json.dumps(ret, cls=JsonCustomEncoder)
return HttpResponse(result)
login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form id="fm">
{% csrf_token %}
<p><input type="text" name="username"></p>
<p><input type="password" name="password"></p>
<a id="submit">提交</a>
</form>
<script src="/static/jquery-1.12.4.js"></script>
<script>
$(function () {
$("#submit").click(function () {
$.ajax({
url: "/login.html",
type: "POST",
data: $("#fm").serialize(),
success: function (arg) {
console.log(arg);
arg = JSON.parse(arg);
},
error: function () {
}
})
});
});
</script>
</body>
</html>
时间： 2024-08-02 22:10:43