彻底解决四种路由器不能上网故障

建一个项目 newformstutorials ，建一个 app blog ，在 blog 的 models 中定义个：

class Article(models.Model):
title = models.CharField(u'标题', maxlength=255)
author = models.CharField(u'作者', maxlength=20)
hits = models.IntegerField(u'点击数', default=0, editable=False)
content = models.TextField(u'内容')

配置好数据库，把 newformstutorials.blog 加到 INSTALLED_APPS，manage.py syncdb，然后 manage.py shell ，然后：

In [1]: import django.newforms as forms

In [2]: from newformstutorials.blog.models import Article

In [3]: ArticleForm = forms.form_for_model(Article)

In [4]: form = ArticleForm()

In [5]: print unicode(form)
标题:
作者:"text" name="author" maxlength="20" />
内容:rows="10" cols="40" name="content">

In [6]: print form.as_ul()
标题:

作者: "author" maxlength="20" />

内容: ls="40" name="content">

一个空白的 form 就这样出来了，这就是个添加文章的表单，让我们用这个表单来加点数据吧：

In [7]: form = ArticleForm({'title':'some title','author':'huangyi'})

In [8]: form.is_valid()
Out[8]: False

In [9]: form.errors
Out[9]: {'content': [u'This field is required.']}

In [10]: form = ArticleForm({'title':'some title','author':'huangyi', 'content':
'some contents...'})

In [11]: form.is_valid()
Out[11]: True

In [12]: article = form.save(commit=True)

OK，数据就这样保存了，我们再来试试数据更新的页面吧：

In [13]: ChangeForm = forms.form_for_instance(article)

In [14]: form = ChangeForm()

In [15]: print unicode(form)
标题:
作者:"text" name="author" value="huangyi" maxlength="20" />
内容:rows="10" cols="40" name="content">some contents...

In [16]: form = ChangeForm({'title':'another title', 'author':'huangyi', 'conten
t':'other contents...'})
In [17]: form.is_valid()
Out[17]: True

In [18]: form.save()
Out[18]: <article: article="" object="">

In [19]: article = Article.objects.get(id=article.id)

In [20]: article.title
Out[20]: 'another title'