/ registration __init __（）的TypeError得到一个意外的关键字参数'null'

Question

请求方法：GET 请求网址：http://127.0.0.1:8000/registration Django版本：1.3.1 异常类型：TypeError 例外值：

__init__()收到意外的关键字参数'null'

  

例外位置：     /usr/local/lib/python2.7/dist-packages/django/forms/fields.py in    init ，第196行Python可执行文件：/ usr / bin / python Python版本：2.7.2 Python路径：

     

[ '/家/ forent / myprograms / mysite7'，   '/usr/local/lib/python2.7/dist-packages/oauth2-1.5.211-py2.7.egg'，   '/usr/local/lib/python2.7/dist-packages'，   '/usr/local/lib/python2.7/dist-packages/python_twitter-0.8.2-py2.7.egg'，   '/usr/local/lib/python2.7/dist-packages/ipython-0.12-py2.7.egg'，   '/usr/lib/python2.7'，'/ usr / lib / python2.7 / plat-linux2'，   '/usr/lib/python2.7/lib-tk'，'/ usr / lib / python2.7 / lib -old'，   '/usr/lib/python2.7/lib-dynload'，   '/usr/local/lib/python2.7/dist-packages'，   '/usr/lib/python2.7/dist-packages'，   '/usr/lib/python2.7/dist-packages/PIL'，   '/usr/lib/python2.7/dist-packages/gst-0.10'，   '/usr/lib/python2.7/dist-packages/gtk-2.0'，   '/usr/lib/pymodules/python2.7'，   '/usr/lib/python2.7/dist-packages/ubuntu-sso-client'，   '/usr/lib/python2.7/dist-packages/ubuntuone-client'，   '/usr/lib/python2.7/dist-packages/ubuntuone-control-panel'，   '/usr/lib/python2.7/dist-packages/ubuntuone-couch'，   '/usr/lib/python2.7/dist-packages/ubuntuone-installer'，   '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol']

     

服务器时间：2012年1月27日星期五11:11:22 -0600

＃

view

from django.shortcuts import render_to_response
from registration.models import UserDetails
from forms import UserForm
from django.template import RequestContext
from django.http import HttpResponseRedirect


def user_details(request):
    if request.method=="POST":
        uform=UserForm(request.POST)
        if uform.is_valid():
            profile=uform.save(commit=False)
            profile.save()
        else:
            uform=UserForm()
        return render_to_response('career.html',{'uform':uform},context_instance=RequestContext(request))

#model

from django.db import models

class UserDetails(models.Model):
    fname=models.CharField(max_length=20)
    lname=models.CharField(max_length=20)
    email = models.EmailField()
    address = models.CharField(max_length=50)
    country = models.CharField(max_length=20)
    def __unicode__(self):
        return self.fname
        return self.lname
        return self.email
        return self.address
        return self.country
#forms

from django import forms
from registration.models import UserDetails


class UserForm(forms.Form ):
    fname=forms.CharField(max_length=20, null=True,blank=True)
    lname=forms.CharField(max_length=20, null=True,blank=True)
    email = forms.EmailField(blank=True, null=True)
    address = forms.CharField(max_length=50, null=True,blank=True)
    country = forms.CharField(max_length=20, null=True,blank=True)

#urls

from django.conf.urls.defaults import patterns, include, url

from django.contrib import admin
admin.autodiscover()
# Uncomment the next two lines to enable the admin:
# from django.contrib import admin
# admin.autodiscover()

urlpatterns = patterns('',
    # Examples:
     url(r'^registration/$', 'registration.views.user_details', name='user_details'),
    # url(r'^mysite7/', include('mysite7.foo.urls')),

    # Uncomment the admin/doc line below to enable admin documentation:
    # url(r'^admin/doc/', include('django.contrib.admindocs.urls')),

    # Uncomment the next line to enable the admin:
      url(r'^admin/', include(admin.site.urls)),
)

#template 

<form enctype="multipart/form-data" method="post">{% csrf_token %}
    {{ uform.as_p }}
   <input type="submit" ....>
</form>

这是我写的代码..

Answer 1

表单字段没有null或blank个参数。这些仅适用于模型字段。对于表单字段，您只需required。

但是，您应该使用ModelForm来为模型创建表单字段，然后允许您保存它。

Answer 2

不是肯定的，但我认为您不能在null=True上使用blank=True或forms.CharField()，而是将null作为参数传递给{{的init（） 1}}并且解释器抛出此错误。尝试从

中删除forms.CharField

将表单更改为：

null=True

根据django网站Django Form Fields，CharField有两个可选的验证参数：max_length和min_length，以及必需的。