/post/politics 字段 \'id\' 的 ValueError 需要一个数字，但得到了 \'politics\'答案

【问题标题】：ValueError at /post/politics Field 'id' expected a number but got 'politics'/post/politics 字段 \'id\' 的 ValueError 需要一个数字，但得到了 \'politics\'
【发布时间】：2022-08-23 19:46:54
【问题描述】：

我有一个模板posts.html

{% extends \'base2.html\' %}
{% block posts %}

<div class=\"row\">
  <div class=\"leftcolumn\">
    <div class=\"cardpost\">
        <h1>{{posts.title}}</h1>
        <h5>{{posts.created_at}}</h5>
        <div class=\"fs-4\">{{posts.body | safe}}</div>
    </div>
  </div>
</div>
{% endblock %}

posts.html 扩展 base2.html，因为我希望 posts.html 具有导航栏功能

<nav id=\"navbar\" class=\"navbar\">
        <ul>
          <li><a href=\"about\">About</a></li>
          <li><a href=\"guestposting\">Guest Posting</a></li>
          <li class=\"dropdown\"><a href=\"\"><span>Categories</span> <i class=\"bi bi-chevron-down dropdown-indicator\"></i></a>
            <ul>
              <li><a href=\"tech\">Tech</a></li>
              <li><a href=\"bizconomics\">Bizconomics</a></li>
              <li><a href=\"politics\">Politics</a></li>
              <li><a href=\"religion\">Religion</a></li>
              <li><a href=\"sports\">Sports</a></li>
            </ul>
          </li>
          <li><a href=\"contactform\">Contact</a></li>
        </ul>

上面是导航栏的一部分，它位于 base2.html 和 index.html 上。它在 index.html 中完美运行。但是，当用户在 posts.html-> path(\'post/str:pk\', views.post, name=\'post\') 上并且他们单击政治类别时，例如，我收到此错误：

/post/politics 的 ValueError 字段 \'id\' 需要一个数字，但得到了 \'politics\'。

这是我的网址路线

    path(\'\', views.index, name=\'index\'),
    path(\'post/<str:pk>\', views.post, name=\'post\'),
    path(\'politicalpost/<str:pk>\', views.politicalpost, name=\'politicalpost\'),
    path(\'bizconomicspost/<str:pk>\', views.bizconomicspost, name=\'bizconomicspost\'),
    path(\'techpost/<str:pk>\', views.techpost, name=\'techpost\'),
    path(\'sportspost/<str:pk>\', views.sportspost, name=\'sportspost\'),
    path(\'religionpost/<str:pk>\', views.religionpost, name=\'religionpost\'),
    path(\'subscribe\', views.subscribe, name =\'subscribe\'),
    path(\'contactform\', views.contactform, name=\'contactform\'),
    path(\'about\', views.about, name=\'about\'),
    path(\'guestposting\', views.guestposting, name=\'guestposting\'),
    path(\'bizconomics\', views.bizconomics, name=\'bizconomics\'),


   #These are the caregory urls
 
    path(\'tech\', views.tech, name=\'tech\'),
    path(\'sports\', views.sports, name=\'sports\'),
    path(\'politics\', views.politics, name=\'politics\'),
    path(\'religion\', views.religion, name=\'religion\'),
    path(\'culture\', views.culture, name=\'culture\'),
    path(\'culturepost/<str:pk>\', views.culturepost, name=\'culturepost\'),

那么我怎样才能使当用户点击政治类别时，他们从posts.html重定向到政治页面->路径（\'politics\'，views.politics，name=\'politics\ '),

我的观点.py

def index(request):
    politics = Politics.objects.all().order_by(\'-created_at\')
    posts = Post.objects.all().order_by(\'-created_at\')
    trendingposts = Trending.objects.all().order_by(\'-created_at\')
    religions = Religion.objects.all().order_by(\'-created_at\')
    sliders = Heroslider.objects.all()
    return render(request,
    \'index.html\',
    {\'politics\':politics, \'posts\':posts,\'trendingposts\':trendingposts,\'religions\':religions, \'sliders\':sliders})


def politics(request):
    politics = Politics.objects.all()
    return render(request, \'Politics/politics.html\', {\'politics\':politics})

def post(request, pk):
    posts = Post.objects.get(id=pk)
    return render(request, \'posts.html\', {\'posts\':posts})

标签： python django

【解决方案1】：

请尝试更改它：

<li><a href="politics">Politics</a></li>

和：

<li><a href="{% url 'politics' %}">Politics</a></li>

【讨论】：