html - 未找到带有关键字参数“{'pk': 1}”的“喜欢”的反向操作。尝试了 1 种模式：['datasecurity/likes/'] 像 django 中的按钮错误

Question

注册和登录页面工作正常，但我的喜欢按钮不起作用..我不知道为什么......有人可以帮我解决这个问题......这将是很大的帮助，请帮助谢谢！

1. 视图.py`

    from django.shortcuts import render, get_object_or_404
    from datasecurity.models import Post
    from django.urls import reverse
    from django.http import HttpResponseRedirect
    from django.contrib.auth.decorators import login required
   
   
    # Create your views here.
    def datasecurity(request):
         allPosts= Post.objects.all()
         context={'allPosts': allPosts}
          return render(request, 'datasecurity/data.html',context=context)
   
    def blogHome(request, slug):
         post=Post.objects.filter(slug=slug).first()
         context={"post":post}
         return render(request, "datasecurity/blogHome.html", context)
   
    @login_required
    def likes(request, pk):
         post=get_object_or_404(Post, id=request.POST.get('post_id'))
         post.likes.add(request.user)
         return HttpResponseRedirect(reverse('datasecurity:blogHome', args=str(pk)))
   

2. 网址.py

   from django.conf.urls import url
   
   from . import views
   
   app_name = 'datasecurity'
   
   urlpatterns = [
           url(r'^$', views.datasecurity, name="datasecurity"),
           url(r'^datasecurity/(?P<slug>[^/]+)', views.blogHome, name='blogHome'),
           url(r'^likes/<int:pk>', views.likes, name = "likes"),
   
   ]
   

3. 数据.html

    {% extends 'careforallapp/navbar.html' %}
    {% block body_block %}
     {% load static %}
   

   欢迎来到数据安全

       {% for post in allPosts  %}
   
        <div class="line-dec"></div>
        <span
          >This is a Bootstrap v4.2.1 CSS Template for you. Edit and use
          this layout for your site. Updated on 21 May 2019 for repeated main menu HTML code.</span
        >
      </div>
      <div class="left-image-post">
        <div class="row">
          <div class="col-md-6">
            <div class="left-image">
              {% if post.img %}
                <img src="{{ post.img.url }}" alt="" />
              {% endif %}
            </div>
          </div>
          <div class="col-md-6">
            <div class="right-text">
              <h4>{{post.title}}</h4>
              <h6>Article  by {{post.author}}</h6>
              <h2>{{post.datetime}}</h2>
   
              <p>
                {{post.content|safe | truncatechars:280}}
              </p>
   
              <from action = "{% url 'datasecurity:likes' pk=post.pk %}" method = "POST">
                {% csrf_token %}
                <button type="submit" name="post_id" value = "{{ post_id }}" class="btn"> Like 
              </button>
              </form>
   
              <div class="white-button">
                <a href="{% url 'datasecurity:blogHome' slug=post.slug %}">Read More</a>
              </div><br>
            </div>
               {% endfor %}
   

4. 错误信息<from action = "{% url 'datasecurity:likes' pk=post.pk %}" method = "POST">

• 未找到带有关键字参数“{'pk': 1}”的“喜欢”的反向操作。尝试了 1 种模式：['datasecurity/likes/int:pk']

当我调试代码时，这个消息被突出显示。所以有人可以告诉我我的代码中遗漏了什么......谢谢！

标签： htmldjangofbsdklikebutton

Answer 1

你没有pk从观点中接受论点。将您的视图更改为：

@login_required
 def likes(request, pk):
      post=get_object_or_404(Post, id=pk)

和网址：

url(r'^likes/(?P<pk>\d+)/', views.likes, name = "likes"),

注意 url 中使用的正则表达式。