Django TypeError 缺少 1 个必需的位置参数：'listing_id'

Question

这里是 Django 新手。对于我的第一个项目，我正在学习我在网上找到的一门课程，这是一个寻找房产、房地产经纪人和其他东西的网站。

在登录页面上，我有一个搜索表单，可用于根据位置、价格等查找属性。但是，在提交表单时，它给了我以下错误。

TypeError at /listings/search
listing() missing 1 required positional argument: 'listing_id'
Request Method: GET
Request URL:    http://localhost:8000/listings/search?keywords=&city=
Django Version: 2.1.4
Exception Type: TypeError
Exception Value:    
listing() missing 1 required positional argument: 'listing_id'
Exception Location: /home/nived/Documents/BTRE_PROJECTF/venv/lib/python3.6/site-packages/django/core/handlers/base.py in _get_response, line 124
Python Executable:  /home/nived/Documents/BTRE_PROJECTF/venv/bin/python
Python Version: 3.6.7
Python Path:    
['/home/nived/Documents/BTRE_PROJECTF',
 '/usr/lib/python36.zip',
 '/usr/lib/python3.6',
 '/usr/lib/python3.6/lib-dynload',
 '/home/nived/Documents/BTRE_PROJECTF/venv/lib/python3.6/site-packages']

我不确定这里指的是哪个listing_id。

到目前为止，我还没有在 search.html 文件中添加任何标记。它只是一个简单的

<h1>Search</h1>

在开始添加更多内容之前，我想确保页面链接正确。

索引页面html

<section id="showcase">
    <div class="container text-center">
      <div class="home-search p-5">
        <div class="overlay p-5">
          <h1 class="display-4 mb-4">
            Property Searching Just Got So Easy
          </h1>
          <p class="lead">Lorem ipsum dolor sit, amet consectetur adipisicing elit. Recusandae quas, asperiores eveniet vel nostrum magnam
            voluptatum tempore! Consectetur, id commodi!</p>
          <div class="search">
            <form action="{% url 'search' %}">
              <!-- Form Row 1 -->
              <div class="form-row">
                <div class="col-md-4 mb-3">
                  <label class="sr-only">Keywords</label>
                  <input type="text" name="keywords" class="form-control" placeholder="Keyword (Pool, Garage, etc)">
                </div>

                <div class="col-md-4 mb-3">
                  <label class="sr-only">City</label>
                  <input type="text" name="city" class="form-control" placeholder="City">
                </div>

                <div class="col-md-4 mb-3">
                  <label class="sr-only">State</label>
                  <select name="state" class="form-control">
                    <option selected="true" disabled="disabled">State (All)</option>
                    {%for key,value in state_choices.items%}
                      <option value="{{key}}">{{value}}</option>
                    {%endfor%}
                  </select>
                </div>
              </div>
              <!-- Form Row 2 -->
              <div class="form-row">
                <div class="col-md-6 mb-3">
                  <label class="sr-only">Bedrooms</label>
                  <select name="bedrooms" class="form-control">
                    <option selected="true" disabled="disabled">Bedrooms (All)</option>
                    {%for key,value in bedroom_choices.items%}
                      <option value="{{key}}">{{value}}</option>
                    {%endfor%}            
                  </select>
                </div>
                <div class="col-md-6 mb-3">
                  <select name="price" class="form-control" id="type">
                    <option selected="true" disabled="disabled">Max Price (Any)</option>
                    {%for key,value in price_choices.items%}
                      <option value="{{key}}">{{value}}</option>
                    {%endfor%}
                  </select>
                </div>
              </div>
              <button class="btn btn-secondary btn-block mt-4" type="submit">Submit form</button>
            </form>
          </div>
        </div>
      </div>
    </div>
  </section>

列表应用程序中的 urls.py

from django.urls import path
from . import views
urlpatterns=[

    path('', views.index,name='listings'),
    path('<int:listing_id>',views.listing,name='listing'),
    path('search',views.listing,name='search'),

]

列表应用中的views.py

from django.shortcuts import get_object_or_404, render
from django.http import HttpResponse
from django.core.paginator import EmptyPage, PageNotAnInteger, Paginator
from .models import Listing

def index(request):

    listings = Listing.objects.order_by('-list_date') .filter(is_published=True)

    paginator = Paginator(listings,6)
    page=request.GET.get('page')
    paged_listings=paginator.get_page(page)

    context={
        'listings':paged_listings 
    }
    return render(request, 'listings/listings.html',context)

def listing(request,listing_id):

    listing=get_object_or_404(Listing,pk=listing_id)

    context = {
        'listing' : listing
    }
    return render(request,'listings/listing.html',context)

def search(request):   
    return render(request, 'listings/search.html')

这里似乎有什么问题？欢迎任何建议。

Answer 1

请注意，在编写路径时，空格非常危险。 我遇到了同样的问题，我注意到我在 : 和 id 之间使用了一个空格，当我删除那个空格时，问题就解决了。

urlpatterns = [
path('', views.index, name='listings'),
path('<int:listing_id>', views.listing, name='listing'),
path('search', views.search, name='search'),

]