Question

我用django作为我的网站。但是我有一个关于blog / urls.py的问题（我的应用名称是博客）

我在blog / models.py中使用了一对多的关联。

类别（1 =＆gt; *）主题（1 =＆gt; *）文章。

class Category(models.Model):
    name = models.CharField(max_length=200)
    statement = models.TextField()
    slug=models.SlugField()

    page_name = models.ForeignKey('Page', on_delete=models.CASCADE)

    def __str__(self):
        return self.name


class Subject(models.Model):
    name = models.CharField(max_length=200)
    statement = models.TextField()
    slug=models.SlugField()

    category_name = models.ForeignKey('Category', on_delete=models.CASCADE)

    def __str__(self):
        return self.name

class Article(models.Model):
    author = models.ForeignKey('auth.User', on_delete=models.CASCADE)
    title = models.CharField(max_length=200)
    slug=models.SlugField()
    text = models.TextField()
    created_date = models.DateTimeField(
        default=timezone.now)
    published_date = models.DateTimeField(
        blank=True, null=True)
    subject_name = models.ForeignKey('Subject', on_delete=models.CASCADE)


    def publish(self):
        self.published_date = timezone.now()
        self.save()

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse('blog:detail', kwargs={'id' : self.id})

博客/ views.py

def detail(request,article_slug):
article = get_object_or_404(Article, slug=article_slug)
article_list=Article.objects .all()
subject_list = Subject.objects.all()
context={
    'article': article,

    'article_list':article_list,
    'subject_list': subject_list
}

return render(request, 'blog/detail.html', context)

博客/ urls.py

url(r'^(?P<category_slug>[\w-]+)/(?P<subject_slug>[\w-]+)/(?P<article_slug>[\w-]+)/$', views.detail, name='detail'),

当我点击文章的链接

时，我想看到该网址

http://127.0.0.1:8000/myworkandresearch/category_slug/subject_slug/article_slug

blog / urls.py'如何编辑？

Answer 1

我认为你应该有一个详细视图

def detail(request, category_slug, subject_slug, article_slug):
    article = Article.objects.filter(
        slug = article_slug,
        subject__slug = subject_slug,
        subject__category__slug = category_slug
    )
    return render(request, 'blog/detail.html', {'article': article})

您的文章模型需要以下方法

def get_absolute_url(self):
    return reverse('detail', args=[self.slug, self.subject.slug, self.subject.category.slug])

展示文章时

<a href="{{article.get_absolute_url}}">{{article.title}}</a>

您的网址可能如下所示

url(r'^myworkandreseach/(?P<category_slug>[\w-]+)/(?P<subject_slug>[\w-]+)/(?P<article_slug>[\w-]+)/$', views.detail, name='detail'),

务必导入视图

Answer 2

编辑我的博客/ models.py

class Article(models.Model):
author = models.ForeignKey('auth.User', on_delete=models.CASCADE)
title = models.CharField(max_length=200)
slug=models.SlugField()
text = models.TextField()
created_date = models.DateTimeField(
    default=timezone.now)
published_date = models.DateTimeField(
    blank=True, null=True)
subject_name = models.ForeignKey('Subject', on_delete=models.CASCADE)


def publish(self):
    self.published_date = timezone.now()
    self.save()

def __str__(self):
    return self.title

def get_absolute_url(self):
     return reverse('blog:detail', args=[self.slug, self.subject.slug, self.subject.category.slug])

博客/ views.py

def detail(request, category_slug, subject_slug, article_slug):
article = Article.objects.filter(
    slug = article_slug,
    subject__slug = subject_slug,
    subject__category__slug = category_slug
)

subject_list = Subject.objects.all()
category_list = Category.objects.all()

context = {
    'category_list': category_list,
    'subject_list': subject_list,
    'article': article
}
return render(request, 'blog/detail.html', context)

博客/ urls.py

    from django.conf.urls import include, url
from . import views

app_name = 'blog'
urlpatterns = [
    url(r'^$', views.myworkandresearch, name='myworkandresearch'),
    url(r'(?P<category_slug>[\w-]+)/$', views.subjects, name='subjects'),
    url(r'^(?P<category_slug>[\w-]+)/(?P<subject_slug>[\w-]+)/(?P<article_slug>[\w-]+)/$', views.detail, name='detail'),
]

subjects.html

{% for article in subject.article_set.all %}}
                <ul class="sidebar-items">
                  <li><a href="{{article.get_absolute_url}}">{{article.title}}</a></li>
                </ul>
                {% endfor %}

[错误继续。] [2]

找不到页面（404）请求方法：GET请求   网址：http://127.0.0.1:8000/myworkandresearch/machine_learning/python_dictionary/numpy/提出者：blog.views.subjects没有类别与给定的查询匹配。

您看到此错误，因为您的Django中有DEBUG = True   设置文件。将其更改为False，Django将显示一个   标准404页。

Django一对多关系网址

2 个答案: