我对CBV很新,并试图弄清楚它。我从django doc页面复制了以下示例:
https://docs.djangoproject.com/en/dev/topics/class-based-views/generic-editing/
from django.core.urlresolvers import reverse
from django.db import models
class Author(models.Model):
name = models.CharField(max_length=200)
def get_absolute_url(self):
return reverse('author-detail', kwargs={'pk': self.pk})
from django.views.generic.edit import CreateView, UpdateView, DeleteView
from django.core.urlresolvers import reverse_lazy
from myapp.models import Author
class AuthorCreate(CreateView):
model = Author
fields = ['name']
class AuthorUpdate(UpdateView):
model = Author
fields = ['name']
class AuthorDelete(DeleteView):
model = Author
success_url = reverse_lazy('author-list')
from django.conf.urls import patterns, url
from myapp.views import AuthorCreate, AuthorUpdate, AuthorDelete
urlpatterns = patterns('',
# ...
url(r'author/add/$', AuthorCreate.as_view(), name='author_add'),
url(r'author/(?P<pk>\d+)/$', AuthorUpdate.as_view(), name='author_update'),
url(r'author/(?P<pk>\d+)/delete/$', AuthorDelete.as_view(), name='author_delete'),
)
在author / add /我确实得到了表单,但是当我输入字符串时出现以下错误:
Reverse for 'author-detail' with arguments '()' and keyword arguments '{'pk': 3}' not found.
似乎新条目已添加到数据库中,但它无法解析下一个视图的URL?
所以我很困惑,这个get_absolute_url()对象的方法应该做什么,它是如何工作的(我无法从django doc中掌握它)以及如何解决这个问题? 感谢。
编辑1:添加了模板:
author_form.html:
<form action="" method="post">{% csrf_token %}
{{ form.as_p }}
<input type="submit" value="Create" />
</form>
答案 0 :(得分:4)
默认情况下,创建新模型时,django会将您重定向到get_absolute_url
方法返回的模型绝对URL。在您的示例中,您需要添加一个名为author-detail
的网址,该网址接受pk
关键字参数。
urlpatterns = patterns('',
# ...
url(r'author/(?P<pk>\d+)/$', AuthorDetail.as_view(), name='author-detail'),
)
请注意,网址名称与get_absolute_url
方法中的视图名称相匹配。
在模板中使用它:
{% for author in authors %}
<a href="{{author.get_absolute_url}}">{{author.name}}</a>
{% endfor %}