Add part 4a, simple views

README.md

@@ -89,3 +89,9 @@ Remove the `User` model and replace with that in `django.contrib.auth.models`.
     python manage.py makemigrations urlapp
     python manage.py migrate
 
+Part 4
+------
+
+Add default view.
+Edit `urlapp/views.py`, create `urlapp/urls.py`.
+Edit `redurl/urls.py`.

redurl/urls.py

@@ -17,5 +17,6 @@ from django.conf.urls import include, url
 from django.contrib import admin
 
 urlpatterns = [
+    url(r'^', include('urlapp.urls')),
     url(r'^admin/', include(admin.site.urls)),
 ]

urlapp/urls.py

+from django.conf.urls import url
+
+from . import views
+
+urlpatterns = [
+    url(r'^$', views.index, name='index'),
+    url(r'^(?P<url_id>[0-9]+)/$', views.redir, name='redir'),
+    url(r'^url=(?P<url_id>[0-9]+)/$', views.url, name='url'),
+]

urlapp/views.py

 from django.shortcuts import render
+from django.http import HttpResponse
 
 # Create your views here.
+
+def index(request):
+    return HttpResponse("Hello, world!")
+
+def redir(request, url_id):
+    return HttpResponse("You're following URL {}.".format(url_id))
+
+def url(request, url_id):
+    return HttpResponse("You're looking at URL {}.".format(url_id))