Let's connect your View (page) to app URL.

Open the created urls.py file inside the app folder (in our case new_app folder).
It's a new file, so it will be empty.

Create the app_name and urlpatterns variables:

from django.urls import path


app_name = 'NewApp'

urlpatterns = [
    
]

In Django, the app_name variable is used to specify the application namespace for URL names within a Django app. It is defined in the urls.py file of the app. Here's a description of the app_name variable:

• The app_name variable is a string that represents the namespace of the Django app.
• It is used to create a unique identifier for the app's URLs to avoid naming conflicts with URLs from other apps in the project.
• By setting the app_name, you can refer to specific URL patterns using the app's namespace in the Django Tamplate Language (should be described later).
• The app_name should be unique and preferably descriptive, reflecting the purpose or name of the app.

We have the implemented hello_world_view in views.py file:

from django.http import HttpResponse
from django.shortcuts import render

# Create your views here.

def hello_world_view(request):
    return HttpResponse("<h1>Hello, world!</h1>")

Import this view to the urls.py and add path to urlpatterns:

urlpatterns = [
    path('hello', hello_world_view, name='hello-world'),
]

Now we have access to this page via URL:

http://127.0.0.1:7000/app1/hello

If you want to use the app1 as endpoint URL, you can write the empty string into urlpatterns:

urlpatterns = [
    path('', hello_world_view, name='hello-world'),
]

Now, the access to this page provided by URL:

http://127.0.0.1:7000/app1/

At this point, our View is connected, and we can safely modify it:

def hello_world_view(request):
    header = "<h1>Hello, world!</h1>"
    paragraph = "<p>Go to the next chapter!</p>"
    return HttpResponse(header + paragraph)

http://127.0.0.1:7000/app1/