Django Ajax ModelForm 向 request.POST 提交一个空表单
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【中文标题】Django Ajax ModelForm 向 request.POST 提交一个空表单【英文标题】：Django Ajax ModelForm submits an empty form to request.POST 【发布时间】：2013-08-11 03:47:31 【问题描述】：在 django、ajax 和 jquery 方面我有点新手，所以如果我的问题变得微不足道，我提前道歉。
一段时间以来，我一直在摸索这个问题，但我正在尝试使用 ajax 和 jquery 通过 jQuery UI 提供的模式对话框窗口提交 Django ModelForm 表单。我遇到的问题是，表单数据似乎没有传递到请求中，或者我的views.py 文件中的表单对象在解析reqest.POST 对象时遇到问题。无论我何时提交表单，form.is_valid() 都会失败并查看表单错误，我会为表单的每个输入获得“此字段是必需的”。所以不确定我做错了什么，有问题的表单在我尝试使用 ajax 对其进行“模态化”之前就起作用了。
这是我的代码，也许更老练的人可以看到我错过了什么。
forms.py
from django.forms import ModelForm
from artists.views import Artist
class RegistrationForm(ModelForm):
username = forms.CharField(label=(u'User Name'))
first_name = forms.CharField(label=(u'First Name'))
last_name = forms.CharField(label=(u'Last Name'))
email = forms.EmailField(label=(u'Email'))
password = forms.CharField(label=(u'Password'),
widget=forms.PasswordInput(render_value=False))
password = forms.CharField(label=(u'Verify Password'),
widget=forms.PasswordInput(render_value=False))
class Meta:
model = Artist
exlude = (user, slug, work_email)
views.py
from django.http import HttpResponse
from django.contrib.auth.models import User
from django.shortcut import render
from django.template.defaultfilters import slugify
from django.utils.functional import Promise
from django.utils.encoding import force_text
from django.shortcuts import render
from artists.forms import RegistrationForm
from artists.models import Artist
import json
class LazyEncoder(json.JSONEncoder):
def default(self, obj):
if isinstance(obj, Promise):
return force_text(obj)
return super(LazyEncoder, self).default(obj)
def ValidateEmail(email):
from django.core.validators import validate_email
from django.core.exception import ValidationError
try:
validate_email(email)
return True
except ValidationError:
return False
def ArtistRegistration(request):
form = False
if request.method == 'POST' and request.is_ajax():
form = RegistrationForm(request.POST)
if form.is_Valid():
is_valid = True
username = form.cleaned_data['username']
password = form.cleaned_data['password']
password1 = form.cleaned_data['password1']
email = form.cleaned_data['email']
first_name = form.cleaned_data['first_name'].title()
last_name = form.cleaned_data['last_name'].title()
if ValidateEmail(email) is False:
is_valid = False
message = "Email entry is invalid."
if User.objects.filter(username=username).exists():
is_valid = False
message = "Username already exists."
if password != password1:
is_valid = False
message = "Passwords do not match."
if is_valid is False:
response_dict = "type": "error"
response_dict["message"] = message
result = json.dumps(response_dict, cls=LazyEncoder)
return HttpResponse(result, mimetype='application/json')
else:
user = User.objects.create_user)
username = username,
email = email,
password = password,
first_name = first_name,
last_name = last_name_
user.save()
artist = Artist(
user = user,
first_name = first_name,
last_name = last_name,
work_email = email,
slug = slugify('%s %s' % (first_name, last_name)),
department=form.cleaned_data['department'])
artist.save()
response_dict = 'status':1, 'type':'success'
result = json.dumps(response_dict, cls=LazyEncoder)
return HttpResponse(result, mimetype='application/json')
else:
response_dict = 'type': 'error'
response_dict['message'] = 'form is invalid'
response_dict['errors'] = json.dumps(form.errors)
result = json.dumps(response_dict, cls=LazyEncoder)
return HttpResponse(result, mimetype='application/json')
else:
form = RegistrationForm()
context = 'form' : form
return render(request, 'register-modal.html', context)
这是我的模态对话框调用的 html： 注册-modal.html
<form action="% url 'modal_registration' %" method="post" id="register_form" name="register_form">
% csrf_token %
<table>
<tbody>
<tr>
<th><label for="first_name">First Name:</label></th>
<td> form.first_name </td>
</tr>
<tr>
<th><label for="last_name">Last Name:</label></th>
<td> form.last_name </td>
</tr>
<tr>
<th><label for="email">Email:</label></th>
<td> form.email </td>
</tr>
<tr>
<th><label for="username">Username:</label></th>
<td> form.username </td>
</tr>
<tr>
<th><label for="password">Password:</label></th>
<td> form.password </td>
</tr>
<tr>
<th><label for="password1">Verify Pswd:</label></th>
<td> form.password1 </td>
</tr>
<tr>
<th><label for="department">Department:</label></th>
<td> form.department </td>
</tr>
</tbody>
</table>
</form>
<span id="registration_error" name="registration_error" style="color: #FF0000;"></span>
最后是进行所有 jquery 和 ajax 调用的 js 文件。 我省略了 csrf 部分，因为它是从 Django 文档中逐字复制的。
注册.js
$(document).ready(function ()
$.ajaxSetup(traditional: true);
var $register_dialog = $('#modal_register_div').dialog(
autoOpen: false,
title: "User Registration",
closeOnEscape: true,
draggable: false,
resizable: false,
modal: true,
width: 450,
buttons:
"Register": function ()
var $this = $(this);
var frm = document.form['register_form'];
$.ajax(
type: frm.method,
url: frm.action,
data: $('#register_form').serialize(),
contentType: "application/json;charset=utf-8",
dataType: 'json',
success: function(response)
if(response['type'] == 'success')
//any extra success functionality goes here
$this.dialog("close");
else
$("#registration_error").html(response['message']);
console.log(response['errors']);
,
error: function(xhr, ajaxOptions, thrownError)
alert(thrownError + '\n' + xhr.status + '\n' + ajaxOptions)
);
return false;
);
$('#register_artist').live("click", function ()
$.ajax(
type: 'get',
dataType: 'html',
url: '/register/'
data: ,
success: function(response)
$register_dialog.empty().html(response).dialog('open');
);
);
);
模态对话框绑定到我的 django 页面的基本模板页面上的隐藏 div，并且 js 脚本加载在同一页面上。通过单击空 href 链接调用该对话框。无论如何，如果有人能看到我做错了什么，您的意见将不胜感激。
谢谢！
【问题讨论】：
$('#register_form').serialize()的内容是什么？
【参考方案1】：
弄清楚我的愚蠢之处。在我的 ajax 调用中，我将我的内容类型定义为：
contentType: 'application/json;charset=utf-8'
当它应该是以下情况时：
contentType: 'application/x-www-form-urlencoded;charset=utf-8'
在查看了与注册表单相比有效的登录表单的标题数据后，我意识到，在我的登录表单中，数据是通过“Form_Data”传递给请求的，而我的注册表单正在传递作为“Request_Payload”。做出改变后，一切都像魅力一样。
【讨论】：
谢谢，我是一个堆栈菜鸟，所以我忽略了这样做。以上是关于Django Ajax ModelForm 向 request.POST 提交一个空表单的主要内容，如果未能解决你的问题，请参考以下文章
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