Python-Django [找不到错误404页面的网址]

Question

I have written the following simple piece of code, I just wanted to check whether when accessed the POST method, it says 405, but instead it says page not found.

views.py

from django.shortcuts import render, redirect
from django.http import HttpResponse
from .forms import helloform

def index(request):
    form = helloform()
    return render(request, 'hello/index.html', {'form' : form})

def addintodb(request): #trying to invoke this function
    form = helloform(request.POST)
    print(request.POST)
    return redirect(index)

urls.py

from django.urls import path
from . import views

urlpatterns = [
    path('', views.index, name='index'),
    path('add', views.addintodb, name='addtodb'), #using this url
]

index.html

> form action="{% url 'addtodb' %}" method="POST" role="form" # from here
>     ...                      
>     </form> 

I figured quite after some time that, having my projects URL to "" gives the required. (ie)

myproject's urls.py

from django.contrib import admin
from django.urls import path, include


urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('hello.urls')) #previously I had path('hellobfs', include('hello.urls'))
]

so removing any path of my project's url allowed me to have myapp's url working without "404" error, can someone explain why?

Answer 1

我认为您需要将表单保存在views.py文件中，请尝试在form = helloform（request.POST）之后添加一个form.save（）。

Answer 2

Replace the return redirect(index) with return redirect('/', ) . Your code should look like this:

def addintodb(request): #trying to invoke this function
    form = helloform(request.POST)
    print(request.POST)
    return redirect('/', )  #<-- this is the url pattern for your index

Answer 3

I figured this, as the urls.py in my app requires both the urls of projects and app

that is project url ->

path('hellobfs', include('hello.urls'))

app's url ->

path('', views.index, name='index'),
path('adding', views.addnewentry, name='add'),

when I need to traverse to adding page, I need to provide (where I made the mistake)

127.0.0.1:8000/hellobfsadding

which provided the method not allowed, and to improve readability we can add a '/' in project's url like

path('hellobfs/', include('hello.urls'))

now we can traverse by

127.0.0.1:8000/hellobfs/adding