Python Django：必须使用对象 pk 或 slug 调用通用详细信息视图
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Django: Generic detail view must be called with either an object pk or a slug
提问by slaughterize
Getting this error when submitting the form associated with this view. Not sure what exactly is the problem, considering I have a form with a very similar structure and it works fine.
提交与此视图关联的表单时出现此错误。不确定到底是什么问题，考虑到我有一个结构非常相似的表单并且它工作正常。
#views.py
class Facture_Creer(SuccessMessageMixin, CreateView):
model = Facture
template_name = "facturation/nouvelle_facture.html"
form_class= FormulaireFacture
# permet de retourner a l'URL pointant vers le membre modifie
def get_success_url(self):
return reverse_lazy('facture_consulter',kwargs={'pk': self.get_object().id})
class Facture_Update(SuccessMessageMixin, UpdateView):
model = Facture
template_name = "facturation/nouvelle_facture.html"
form_class= FormulaireFacture
success_message = "Facture mise à jour avec succes"
# permet de retourner a l'URL pointant vers le membre modifie
def get_success_url(self):
return reverse_lazy('facture_consulter',kwargs={'pk': self.get_object().id})
#urls.py
urlpatterns = patterns('',
url(r'^$', TemplateView.as_view(template_name="facturation/index.html")),
url(r'^facture/$', FactureView.as_view()),
url(r'^facture/(?P<id>\d+)', FactureView.as_view(), name='facture_consulter'),
url(r'^facture/ajouter/$', Facture_Creer.as_view(), name='facture_creer'),
url(r'^facture/modifier/(?P<pk>\d+)/$', Facture_Update.as_view(), name='facture_update'),
url(r'^membre/ajouter/$', Membre_Creer.as_view(), name='membre_creer'),
url(r'^membre/modifier/(?P<pk>\d+)/$', Membre_Update.as_view(), name='membre_update'),
#url(r'membre/(?P<pk>\d+)/supprimer/$', Membre_Supp.as_view(), name='membre_delete')
)
urlpatterns += staticfiles_urlpatterns()
采纳答案by Alex
You need to pass an object identifier (pk or slug) so your views know which object they're operating on.
您需要传递一个对象标识符（pk 或 slug），以便您的视图知道它们正在操作哪个对象。
Just to take an example from your urls.py:
仅举一个例子urls.py：
url(r'^facture/ajouter/$', Facture_Creer.as_view(), name='facture_creer'),
url(r'^facture/modifier/(?P<pk>\d+)/$', Facture_Update.as_view(), name='facture_update'),
See how the second one has (?P<pk>\d+)/? That is passing a pk to the UpdateView so it knows which object to use. Thus if you go to facture/modifier/5/, then the UpdateView will modify object with pk of 5.
看看第二个怎么样了(?P<pk>\d+)/？这就是将 pk 传递给 UpdateView，以便它知道要使用哪个对象。因此，如果您转到facture/modifier/5/，则 UpdateView 将修改 pk 为 5 的对象。
If you don't want to pass a pk or slug in your url, you'll need to override the get_objectmethod and get your object another way. Url here.
如果您不想在 url 中传递 pk 或 slug，则需要覆盖该get_object方法并以另一种方式获取您的对象。网址在这里。
回答by Robin
As Alex suggests: for default Django behaviour you have to use "pk" in your url pattern.
正如亚历克斯所建议的那样：对于默认的 Django 行为，您必须在 url 模式中使用“pk”。
If you wish to change the object identifier for the primary key "pk" to a different name, you can define pk_url_kwarg. This is available since Django 1.4.
如果您希望将主键“pk”的对象标识符更改为不同的名称，您可以定义pk_url_kwarg。这从 Django 1.4 开始可用。
回答by Linh
Update: In django 2.0.2, change this to:
更新：在 django 2.0.2 中，将其更改为：
url(r'^facture/modifier/<int:pk>/$', Facture_Update.as_view(), name='facture_update'),
回答by radtek
Hey all I used the new path()function and here is my working example that I'm sure will help:
嘿，我使用了新path()功能，这是我的工作示例，我相信它会有所帮助：
views.py:
视图.py：
from django.views.generic.detail import DetailView
class ContentAmpView(DetailView):
model = Content
template_name = 'content_amp.html' # Defaults to content_detail.html
urls.py:
网址.py：
from django.urls import path
from .views import ContentAmpView
# My pk is a string so using a slug converter here intead of int
urlpatterns = [
path('<slug:pk>/amp', ContentAmpView.as_view(), name='content-amp'),
]
templates/content_amp.html
模板/content_amp.html
<!doctype html>
<html amp lang="en">
<head>
<meta charset="utf-8">
<script async src="https://cdn.ampproject.org/v0.js"></script>
<title>Hello, AMPs</title>
<link rel="canonical" href="http://example.ampproject.org/article-metadata.html">
<meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
<script type="application/ld+json">
{
"@context": "http://schema.org",
"@type": "NewsArticle",
"headline": "Open-source framework for publishing content",
"datePublished": "2015-10-07T12:02:41Z",
"image": [
"logo.jpg"
]
}
</script>
<style amp-boilerplate>
body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}
</style>
<noscript>
<style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}
</style>
</noscript>
</head>
<body>
<h1>Welcome to AMP - {{ object.pk }}</h1>
<p>{{ object.titles.main }}</p>
<p>Reporter: {{ object.reporter }}</p>
<p>Date: {{ object.created_at|date }}</p>
</body>
</html>
Also note that in my settings.py, under TEMPLATES, I have 'APP_DIRS': True. More on path here.
还要注意，在我的settings.py，下TEMPLATES，我有'APP_DIRS': True。更多关于这里的路径。
回答by aldyahsn
Like Robin said, you can use pk_url_kwargif you want custom pk name.
就像 Robin 说的，pk_url_kwarg如果你想要自定义 pk 名称，你可以使用。
But as addition, issue Generic detail view must be called with either an object pk or a slugraises also in slug.
但是作为补充，必须使用对象 pk 或 slug在 slug 中引发问题通用详细信息视图。
So if you want to create custom slug field(no need to use pkor slugname). You can override slug_fieldand slug_url_kwargin your DetailView class.
因此，如果您想创建自定义 slug 字段（无需使用pk或slug名称）。您可以在 DetailView 类中覆盖slug_field和slug_url_kwarg。
Here is just another example if you want url as Slug Field.
如果您想要 url 作为 Slug Field，这只是另一个示例。
models.py
模型.py
class Post(models.Model):
title = models.CharField(max_length=255)
url = models.SlugField()
body = models.TextField()
image = models.ImageField(upload_to='blog/', blank=True, null=True)
views.py
视图.py
class ListPost(ListView):
model = Post
template_name = 'blog/list.html'
paginate_by = 2
context_object_name = 'posts'
class DetailPost(DetailView):
model = Post
template_name = 'blog/detail.html'
slug_field = 'url'
slug_url_kwarg = 'url'
urls.py
网址.py
urlpatterns = [
path('', ListPost.as_view()),
path('<slug:url>/', DetailPost.as_view()),
]
回答by Keerthi
I am using Django version 2.2.12,
我使用的是 Django 2.2.12 版，
Here is just another example this works fine for me :
这只是另一个例子，这对我来说很好用：
models.py
模型.py
from django.db import models
class Book(models.Model):
title = models.CharField(max_length=256)
author = models.CharField(max_length=256)
pages = models.IntegerField()
price = models.FloatField()
views.py
视图.py
from django.views.generic import ListView,DetailView
from testapp.models import Book
class BookListView(ListView):
model=Book
class BookDetailView(DetailView):
model=Book
urls.py
网址.py
from django.contrib import admin
from django.urls import path
from testapp import views
urlpatterns = [
path('admin/', admin.site.urls),
path('', views.BookListView.as_view()),
path('<slug:pk>/', views.BookDetailView.as_view()),
]
