如何在 django 3.2 中解决 NoReverseMatch at /（模板渲染过程中的错误）？

Question

Here is the screenshots of error i am getting.

and

App Name is greeting_app Now greeting_app/urls.py has the following code

from django.urls import path
from . import views

urlpatterns = [
    path('', views.home, name="home"),
    path('about/<int:id>/', views.about, name="about"),
]

greeting_app/views.py has the following code

from django.shortcuts import render, HttpResponse
from .models import basicinformation

# Create your views here.
def home(request):
    information = basicinformation.objects.all()
    return render(request, 'index.html', {"info":information})

def about(request, id):
    data = basicinformation.objects.get(id=id)
    return render(request, 'about.html', {"data":data})

templates/index.html has the following code. I have included only the url part in index.html file.

<a href="{% url "about" data.id %}">Description</a>

Answer 1

data.id does not contain an ID. From the error message it contains ('',) (or possibly (",) - it's hard to tell from an image. Please don't use images!).

You do for all in info , then reference all in every other template line, then suddenly try and use data.id .

Since you haven't posted your whole template, it's hard to tell, but I suspect you want to use all.id in your URL here, and not data.id .

Answer 2

1. Add this to urls.py above urlpatterns

app_name=“ greeting_app”

2. Fix template url to this: <a href="{% url "greeting_app:about" data.id %}">Description