创建与DetailView相反的视图

Posted 2023-02-24

【中文标题】创建与DetailView相反的视图

【英文标题】：Create View reverse to DetailView

【发布时间】：2015-01-08 21:00:52

【问题描述】：

上传图片后，我正在尝试从 CreateView 反转到 DetailView。

我收到同样的信息

/photo/image/add 处的 NoReverseMatch 未找到带有参数“（）”和关键字参数“'pk'：50”的“图像视图”的反向。尝试了 0 个模式：[]

这是我的图像模型

from django.db import models
from django.contrib.auth.models import User
from django.contrib import admin
from django.conf import settings
from string import join
import os

class Image(models.Model):
    title = models.CharField(max_length=60, blank=True, null=True)
    image = models.FileField(upload_to="images/")
    tags = models.ManyToManyField(Tag, blank=True)
    albums = models.ManyToManyField(Album, blank=True)
    created = models.DateTimeField(auto_now_add=True)
    rating = models.IntegerField(default=50)
    width = models.IntegerField(blank=True, null=True)
    height = models.IntegerField(blank=True, null=True)
    user = models.ForeignKey(User, null=True, blank=True)


    def __unicode__(self):
        return self.image.name

    def size(self):
            return "%s x %s" % (self.width, self.height)


    def tags_(self):
        lst = [x[1] for x in self.tags.values_list()]
        return str(join(lst, ', '))

    def albums_(self):
        lst = [x[1] for x in self.albums.values_list()]
        return str(join(lst, ', '))

    def thumbnail(self):
        return """<a href="/media/%s"><img border="0"  src="/media/%s"  /></a>""" % (
                                                                        (self.image.name, self.image.name))
        thumbnail.allow_tags = True

    def get_absolute_url(self,*args,**kwargs):
        return reverse('image-view',kwargs='pk': self.pk)

我的 urls.py

from django.conf.urls import patterns, url
from django.conf import settings
from django.conf.urls.static import static
from photo import views


urlpatterns = patterns('',
    url(r'^image/(?P<pk>\d+)/$', views.ImageView.as_view(),name='image-view',),
    url(r'^$', views.ListImage.as_view(),name ='Photo-List',),
    url(r'^image/add/$', views.ImageCreate.as_view(), name = 'create-image',),
    url(r'update/(?P<pk>\d+)/$', views.ImageUpdate.as_view(),name='image-update',),

) 

if settings.DEBUG:
    urlpatterns += static(settings.STATIC_URL,
                          document_root = settings.STATIC_ROOT)
    urlpatterns += static(settings.MEDIA_URL,
                          document_root = settings.MEDIA_ROOT)

我的观点

from django.views.generic import ListView, DetailView, UpdateView, CreateView, UpdateView, DeleteView
from django.core.urlresolvers import reverse_lazy, reverse
from photo.models import Tag, Image, Album
from django.conf import settings

class ImageView(DetailView):
    model = Image
    allow_empty = True
    template_name = 'image.html'

class ListImage(ListView):
    #context_object_name = 'object_list'
    template_name = 'image_list.html'
    model = Image
    #def get_queryset(self):
    #    return Image.objects.all()

class ImageCreate(CreateView):
    model = Image
    template_name='image_create.html'
    fields = ['title','image']

有关我的错误的更多详细信息

Traceback Switch to copy-and-paste view

/Library/Python/2.7/site-packages/django/core/handlers/base.py in get_response
                    response = wrapped_callback(request, *callback_args, **callback_kwargs) ...
▶ Local vars
/Library/Python/2.7/site-packages/django/views/generic/base.py in view
            return self.dispatch(request, *args, **kwargs) ...
▶ Local vars
/Library/Python/2.7/site-packages/django/views/generic/base.py in dispatch
        return handler(request, *args, **kwargs) ...
▶ Local vars
/Library/Python/2.7/site-packages/django/views/generic/edit.py in post
        return super(BaseCreateView, self).post(request, *args, **kwargs) ...
▶ Local vars
/Library/Python/2.7/site-packages/django/views/generic/edit.py in post
            return self.form_valid(form) ...
▶ Local vars
/Library/Python/2.7/site-packages/django/views/generic/edit.py in form_valid
        return super(ModelFormMixin, self).form_valid(form) ...
▶ Local vars
/Library/Python/2.7/site-packages/django/views/generic/edit.py in form_valid
        return HttpResponseRedirect(self.get_success_url()) ...
▶ Local vars
/Users/henriaugris/Documents/Django/mysite/photo/views.py in get_success_url
        return reverse('image-view', kwargs='pk' : self.object.pk) ...
▶ Local vars
/Library/Python/2.7/site-packages/django/core/urlresolvers.py in reverse
    return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)) ...
▶ Local vars
/Library/Python/2.7/site-packages/django/core/urlresolvers.py in _reverse_with_prefix
                             (lookup_view_s, args, kwargs, len(patterns), patterns)) ...
▶ Local vars
Request information

GET
No GET data

【问题讨论】：

您是否尝试在 View 上设置成功变量？

您的模型中的from django.core.urlresolvers import reverse 在哪里？

Madzohan：在我看来

@frlan 如何设置成功？

@madzohan 有什么帮助吗？

【参考方案1】：

而不是将你的models.py文件中的get_absolute_url设置为：

def get_absolute_url(self,*args,**kwargs):
        return reverse('image-view',kwargs='pk': self.pk)

你可以在你的views.py文件中设置它：

class ImageCreate(CreateView):
    model = Image
    template_name='image_create.html'
    fields = ['title','image']
    def get_success_url(self):
        return reverse('image-view', kwargs='pk' : self.object.pk)

    def get_form_kwargs(self, *args, **kwargs):
        kwargs = super(ImageCreate, self).get_form_kwargs(
            *args, **kwargs)
        return kwargs

进行此更改后，您应该从您的 models.py 文件中删除 get_absolute_url。通过此更改，您应该会在成功创建新图像后进入您上传的图像的详细视图。

【讨论】：

github.com/django/django/blob/master/django/views/generic/… 一样

你说的覆盖get_form_kwargs是什么意思，但没有使用它？

今晚我会重新更新我的github项目，感谢您的耐心等待。我刚刚评论了 get_form_kwars 来调试第一部分。

@madzohan 所以你们知道出了什么问题吗？我尝试为我的 DeletView 使用 success_url 但它仅在我硬编码 url 时才有效，所以我猜 Django 无法识别我在 urls.py 中为不同视图赋予的名称