I’m working out of a text book Python Crash Course third edition in chapters 18 and 19. I writing the code word for word line by line. I believe my issue is in views.py. When I run python manage.py runserver the browser opens to localhost:8000. But when I try to click on new topic link I get the error above. Here is my views.py code
from django.http import HttpResponseRedirect
#from importlib.metadata import EntryPoints, entry_points
from django.shortcuts import render, redirect
#from pkg_resources import EntryPoint
Create your views here.
from .models import Topic, Entry
from .forms import TopicForm, EntryForm
def index(request):
“”“The home page for learning Log.”“”
return render(request, ‘learning_logs/index.html’)
def topics(request):
“”“Show all topics.”“”
topics = Topic.objects.order_by('date_added')
context = {'topics': topics}
return render(request, 'learning_logs/topics.html', context)
def topic(request, topic_id):
“”“Show a single topic and all its entries.”“”
topic = Topic.objects.get(id=topic_id)
entries = topic.entry_set.order_by(‘-date_added’)
context = {‘topic’: topic, ‘entries’: entries}
return render(request, ‘learning_logs/topic.html’, context)
def new_topic(request):
“”“Add a new topic”“”
if request.method != ‘POST’:
# No data submitted; create a blank form.
form = TopicForm()
else:
# POST data submitted; process data.
form = TopicForm(data=request.POST)
if form.is_valid():
form.save()
return redirect(‘learning_logs:topics’)
# Display a blank or invalid form.
context = {‘form: form’}
return render(request, ‘learning_logs/new_topic.html’, context)
def new_entry(request, topic_id):
“”“Add a new entry for a particular topic.”“”
topic = Topic.objects.get(id=topic_id)
if request.method != 'POST':
# No data submitted; create a blank form.
form = EntryForm()
else:
# POST data submitted; process data.
form = EntryForm(data=request.POST)
if form.is_valid():
new_entry = form.save(commit=False)
new_entry.topic = topic
new_entry.save()
return redirect('learning_logs:topic', topic_id=topic_id)
def edit_entry(request, entry_id):
“”“Edit an existing entry.”“”
entry = Entry.objects.get(id=entry_id)
topic = entry.topic
if request.method !='POST':
# Initial request; pre-fill form with current entry.
form = EntryForm(instanc=entry)
else:
# Post data submitted; process data.
form = EntryForm(instance=entry, data=request.POST)
if form.is_valid():
form.save()
return redirect('learning_logs:topic', topic_id=topic.id)
# Display a blank or invalid form.
context = {'entry': entry, 'topic': topic, 'form': form}
return render(request, 'learning_logs/edit_entry.html', context)
Here is my learning_logs/urls code
Blo"““Define URL patterns for learning_logs.””"
from django.urls import path
from . import views
app_name = ‘learning_logs’
urlpatterns = [
# Home page
path(‘’, views.index, name=“index”),
# Page that shows all topics.
path(‘topics/’, views.topics, name=‘topics’),
# Detail page for a single topic.
path('topics/<int:topic_id>/', views.topic, name='topic'),
# Page for adding a new topic,\
path('new_topic/', views.new_topic, name='new_topic'),
# Page for adding a new entry
path('new_entry/<int:topic_id>/', views.new_entry, name='new_entry'),
# page for editing an entry.
path('edit_entry/<int:entry_id>/', views.edit_entry, name='edit_entry'),
]ckquote
