如何在Django中修复此搜索栏错误？

问题描述

我正在尝试在python中的博客中创建搜索栏，但收到以下错误：找不到带有参数'（'，）'的'article-detail'。尝试了1个模式：['app1 / article /（？P [0-9] +）$']，但我不确定为什么，所以这是代码，以便您可以看到这里发生了什么：>

追踪

Traceback (most recent call last):
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\core\handlers\exception.py",line 47,in inner
    response = get_response(request)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\core\handlers\base.py",line 179,in _get_response
    response = wrapped_callback(request,*callback_args,**callback_kwargs)
  File "C:\Users\snin2\Desktop\basura\lapagina\app1\views.py",line 187,in searchbar
    return render(request,'app1/search.html',{'query':query,'results':results})
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\shortcuts.py",line 19,in render      
    content = loader.render_to_string(template_name,context,request,using=using)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\loader.py",line 62,in render_to_string
    return template.render(context,request)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\backends\django.py",line 61,in render
    return self.template.render(context)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\base.py",line 170,in render 
    return self._render(context)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\base.py",line 162,in _render
    return self.nodelist.render(context)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\base.py",line 938,in render 
    bit = node.render_annotated(context)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\base.py",line 905,in render_annotated
    return self.render(context)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\loader_tags.py",line 150,in 
render
    return compiled_parent._render(context)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\base.py",in render
    result = block.nodelist.render(context)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\base.py",in render_annotated
    return self.render(context)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\defaulttags.py",line 312,in 
render
    return nodelist.render(context)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\base.py",line 211,in 
render
    nodelist.append(node.render_annotated(context))
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\template\base.py",line 446,in 
render
    url = reverse(view_name,args=args,kwargs=kwargs,current_app=current_app)
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\urls\base.py",line 87,in reverse     
    return iri_to_uri(resolver._reverse_with_prefix(view,prefix,*args,**kwargs))
  File "C:\Users\snin2\anaconda3\envs\MyDjangoEnv\lib\site-packages\django\urls\resolvers.py",line 685,in _reverse_with_prefix
    raise noreverseMatch(msg)
django.urls.exceptions.noreverseMatch: Reverse for 'article-detail' with arguments '('',)' not found. 1 pattern(s) tried: ['app1/article/(?P<pk>[0-9]+)$']

Models.py

class StockNames(models.Model):
    name = models.CharField(max_length=255)
    symbol = models.CharField(max_length=255)

    def __str__(self):
        return self.symbol

        
    

class Post(models.Model):
    title = models.CharField(max_length= 255)
    header_image = models.ImageField(null = True,blank = True,upload_to = 'images/')
    author = models.ForeignKey(User,on_delete=models.CASCADE)
    body = RichTextField(blank = True,null = True)
    #body = models.TextField()
    post_date = models.DateField(auto_Now_add=True)
    category = models.CharField(max_length=255,default='coding')
    snippet = models.CharField(max_length=255)
    likes = models.ManyToManyField(User,related_name = 'blog_posts')
    stock = models.ForeignKey(StockNames,null=True,on_delete = models.CASCADE)

    def total_likes(self):
        return self.likes.count()

    def __str__(self):
        return self.title + ' | ' + str(self.author)
    
    def get_absolute_url(self):
        return reverse('app1:article-detail',args=(self.id,))

Views.py

def searchbar(request):
    query = None
    results = []
    if request.method == 'GET':
        query=request.GET.get("search")
        results= Post.objects.filter(Q(title__icontains=query) | Q(stock__symbol__icontains=query))
    return render(request,'results':results})
    

search.html

{% extends "app1/base.html" %}
    {% block body_block %}
    <div class="container">
        <h1>Search Page</h1>
        {% if query %}
        <h3>{% with results.count as total_results %}
            Found {{total_results}} total results
            {% endwith %}
        </h3>
        {% for x in results %}
        <li><a href="{% url 'app1:article-detail' post.pk %}">{{sym}}</a> -
            {{post.author}} - <small>{{post.post_date}}</small> - 
            {% if user.is_authenticated %}
            <small><a href="{% url 'app1:updatepost' post.pk %}">Edit</a></small><small>
            <a href="{% url 'app1:deletepost' post.pk %}">- Delete</a>  
            </small></li>
            {% endif %}
        </div>
    {% empty %}
    <h1>There's no query</h1>
    {% endfor %}
    {% else %}
    <h3>Error in your query</h3>
    {% endif %}





    {% endblock %}

base.html（特别是搜索输入）

<form action="{% url 'app1:searchbar' %}" class="form-inline my-2 my-lg-0" method="GET">
   <input name="search" class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search",name='search'>
   <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>

urls.py（最后一个）

app_name = 'app1'

urlpatterns = [
    path('post/',PostView.as_view(),name = 'Post'),path('article/<int:pk>',ArticleDetailView.as_view(),name = 'article-detail'),path('add_post/<str:sym>',AddPostView.as_view(),name='addpost'),path('update_post/<int:pk>',UpdatePostView.as_view(),name = 'updatepost'),path('delete_post/<int:pk>',DeletePostView.as_view(),name = 'deletepost'),path('add_category/',AddCategoryView.as_view(),name = 'add_category'),path('category/<str:cats>/',views.CategoryView,name = 'category'),path('category-list/',views.CategoryListView,name ='category-list'),path('like/<int:pk>/',views.LikeView,name = 'like_post'),path('my_posts/',views.MyPostsView.as_view(),name = 'my_posts'),path('article/<int:pk>/add_comment/',AddCommentView.as_view(),name = 'add_comment'),path('update_comment/<int:pk>',UpdateCommentView.as_view(),name = 'updatecomment'),path('delete_comment/<int:pk>',DeleteCommentView.as_view(),name = 'deletecomment'),path('stock/<str:sym>/',views.StockView,name = 'stock'),path('searchbar/',views.searchbar,name = 'searchbar'),]

谢谢！

解决方法

    {% for post in results %}
    <li><a href="{% url 'app1:article-detail' post.pk %}">{{sym}}</a> -
      {% if user.is_authenticated %}
    <small><a href="{% url 'app1:updatepost' post.pk %}">Edit</a></small><small>
    <a href="{% url 'app1:deletepost' post.pk %}">- Delete</a>  
    </small></li>
    {% endif %}

,

<a href="{% url 'app1:article-detail' post.pk %}">

这里的“ post”没有从db声明/上下文/检索，这就是为什么您出错的原因。