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Reverse for 'list-events' not found

Im currently following a Django tutorial to learn views and URLs. I have watched the tutorial over and over and cant see what I am doing wrong.
I receive the error:
Exception Value:
Reverse for 'list-events' not found. 'list-events' is not a valid view function or pattern name.
Views.py
from django.shortcuts import render, redirect
import calendar
from calendar import HTMLCalendar
from datetime import datetime
from .models import Event, Venue
from .forms import VenueForm, EventForm
from django.http import HttpResponseRedirect
# Create your views here.
# all events is listed in the urls.py hence why the function is named all_events
def update_event(request, event_id):
event = Event.objects.get(pk=event_id)
form = EventForm(request.POST, instance=event)
if form.is_valid():
form.save()
return redirect('list-events')
return render(request, 'events/update_event.html',
{'event': event,
'form':form})
def add_event(request):
submitted = False
if request.method == 'POST':
form = EventForm(request.POST)
if form.is_valid():
form.save()
return HttpResponseRedirect('/add_event?submitted=True')
else:
form = EventForm
if 'submitted' in request.GET:
submitted = True
return render(request, 'events/add_event.html', {'form': form, 'submitted': submitted})
def update_venue(request, venue_id):
venue = Venue.objects.get(pk=venue_id)
form = VenueForm(request.POST, instance=venue)
if form.is_valid():
form.save()
return redirect('list-venues')
return render(request, 'events/update_venue.html',
{'venue': venue,
'form': form})
def search_venues(request):
if request.method == "POST":
searched = request.POST['searched']
venues = Venue.objects.filter(name__contains=searched)
return render(request,
'events/search_venues.html',
{'searched': searched,
'venues': venues})
else:
return render(request,
'events/search_venues.html',
{})
def show_venue(request, venue_id):
venue = Venue.objects.get(pk=venue_id)
return render(request, 'events/show_venue.html',
{'venue': venue})
def list_venues(request):
venue_list = Venue.objects.all()
return render(request, 'events/venue.html',
{'venue_list': venue_list})
URLS.py
from django.urls import path
from . import views
urlpatterns = [
path('', views.home, name="home"),
path('<int:year>/<str:month>/', views.home, name="home"),
path('events', views.all_events, name='list_events'),
path('add_venue', views.add_venue, name='add-venue'),
path('list_venues', views.list_venues, name='list-venues'),
path('show_venue/<venue_id>', views.show_venue, name='show-venue'),
path('search_venues', views.search_venues, name='search-venues'),
path('update_venue/<venue_id>', views.update_venue, name='update-venue'),
path('add_event', views.add_event, name='add-event'),
path('update_event/<event_id>', views.update_event, name='update-event'),
event_list.html:
{% extends 'events/base.html' %}
{% block content %}
<h1>Event </h1>
<br />
{% for event in event_list %}
<div class="card">
<div class="card-header">
{{Event}}
</div>
<div class="card-body">
<h5 class="card-title">Venue: {{ event.venue }}</h5>
<p class="card-text">
<ul>
<li>Date: {{ event.event_date }}</li>
<li>Event Venue: {{ event.venue.web }}</li>
<li>Manager: {{ event.manager }}</li>
<li>Desc: {{ event.description }}</li>
<li>Attendees:<br />
{% for user in event.attendees.all %}
{{ user }}<br/>
{% endfor %}
</li>
</ul>
</p>
</div>
<div class="card-footer text-muted">
Update Event
</div>
</div>
<br /><br />
{% endfor %}
{% endblock %}

You have defined your url in the "urls.py" file with the name of "list_events" (note the underscore). In the views you have used it as "list-events" (note the hyphen).
You can fix that by following one of these options:
1.You can change that in the views (by using underscore instead of hyphen):
return redirect('list_events')
2.Or changing it in the url (by using hyphen instead of underscore):
path('events', views.all_events, name='list-events'),

TemplateSyntaxError at /: Cannot Parse the remainder

I am trying to update my homepage whenever a new "article" is added, however it is giving me this error whenever I try to update the page using my updateHomepage view it doesn't work and I get the error
TemplateSyntaxError at /
Could not parse the remainder: ' 'update_homepage'' from 'url 'update_homepage''
I am very new to django so any help with this would be amazing.
My Views.py
def index(request):
articles = Article.objects.all()
context = {'articles': articles}
return render(request, 'able/homepage.html', context)
def updateHomepage(request, pk):
form = EditorForm(instance=task)
context = {'form': form}
article = Editor.objects.get(id=pk)
return render(request, 'able/update_homepage.html', context)
if request.method == 'POST':
form = EditorForm(request.POST, instance=task)
if form.is_valid():
form.save()
return redirect('/')
def editorview(request):
editor = EditorForm
context = {'editor': editor}
return render(request, 'able/editor.html', context)
if request.method == 'POST':
form = EditorForm(request.POST)
if form.is_valid():
form.save()
return redirect('/')
urls.py
urlpatterns = [
path('', views.index, name='homepage'),
path('editor/', views.editorview),
path('update_homepage/<str:pk>/', views.updateHomepage, name='update_homepage')
]
homepage.html
<h1>My Blog</h1>
{% for article in articles %}
<div class="article">
{% csrf_token %}
<h1>{{ article.title }}</h1>
<h3>{{ article.text }}</h3>
</div>
{% endfor %}
Update
update_homepage.html
<h3>Update Homepage</h3>
<form action="" method="POST">
{% csrf_token %}
{{form}}
<input type="submit">
</form>

python crash course 19-1 edit posts not working

This is the error I get when clicking on Edit post under any one of the posts. Would appreciate any help as all this django stuff is confusing me but trying my best to learn. My new post function works and clicking blog/posts to go to the overview page for the blog or to look at all the posts works as well.
NoReverseMatch at /edit_post/1/
Reverse for 'posts' with arguments '(1,)' not found. 1 pattern(s) tried: ['posts/$']
Error during template rendering
In template C:\Users\seng\Desktop\Python projects\c19\nineteen_one\blogs\templates\blogs\base.html, error at line 0
urls.py
"""Defines url paterns for blogs"""
from django.urls import path
from . import views
app_name = 'blogs'
urlpatterns =[
#Home page
path('', views.index, name='index'),
# Page that shows all posts/
path('posts/', views.posts, name='posts'),
#Page for adding a new blogpost
path('new_post/', views.new_post, name='new_post'),
#Page for editing a post
#maybe remove the id?
path('edit_post/<int:post_id>/', views.edit_post, name='edit_post'),
]
views.py
from django.shortcuts import render, redirect
from .models import BlogPost
from .forms import BlogPostForm
# Create your views here.
def index(request):
"""The home page for blogs"""
return render(request, 'blogs/index.html')
def posts(request):
"""Show all blogposts"""
posts = BlogPost.objects.order_by('date_added')
context = {'posts': posts}
return render(request, 'blogs/posts.html', context)
def new_post(request):
"""Add a new blogpost"""
if request.method != 'POST':
#No data submitted; create a blank form.
form = BlogPostForm()
else:
#POST data submitted, process data
form = BlogPostForm(data=request.POST)
if form.is_valid():
form.save()
return redirect('blogs:posts')
#Display a blank or invalid form
context = {'form': form}
return render(request, 'blogs/new_post.html', context)
def edit_post(request, post_id):
"""Edit existing post"""
post = BlogPost.objects.get(id=post_id)
if request.method != "POST":
#Initial request, pre-fill form with the current post
form = BlogPostForm(instance=post)
else:
#Post data submitted, process data
form = BlogPostForm(instance=post, data=request.POST)
if form.is_valid():
form.save()
return redirect('blogs:posts', post_id=post.id)
context = {'post':post, 'form':form}
return render(request, 'blogs/edit_post.html', context)
forms.py
from django import forms
from .models import BlogPost
class BlogPostForm(forms.ModelForm):
class Meta:
model = BlogPost
fields = ['text', 'title']
labels = {'text':'This is the text box', 'title' :"Title here"}
edit_post.html
{% extends "blogs/base.html" %}
{% block content %}
<p>{{ post }}</p>
<p>Edit post:</p>
<form action="{% url 'blogs:edit_post' post.id %}" method='post'>
{% csrf_token %}
{{ form.as_p }}
<button name="submit">Save changes</button>
</form>
{% endblock content %}
posts.html
{% extends "blogs/base.html" %}
{% block content %}
<p>Posts</p>
<ul>
{% for post in posts %}
<li>
<p>{{ post }}</p>
<p>
Edit post
</p>
</li>
{% empty %}
<li>No posts have been added yet.</li>
{% endfor %}
</ul>
Add a new post
{% endblock content %}
new_post.html
{% extends "blogs/base.html" %}
{% block content %}
<p>Add a new post:</p>
<form action="{% url 'blogs:new_post' %}" method='post'>
{% csrf_token %}
{{ form.as_p }}
<button name="submit">Add post</button>
</form>
{% endblock content %}

The issue is with this line in edit_post.html:
<p>{{ post }}</p>
If you are editing the post with id 1, then this link is to the url /posts/1. But that has no match in your urls.py file.
Either you need to remove the post.id parameter from the link, or create a view and a corresponding path in urls.py for this link.

Django search page

I'm trying to make a website that lets visitors search for books using another search engine. I have a script that takes a query, and returns some HTML with the results of the search, but I'm struggling to make a front end for this. I am using django because it seemed like the best option when I started, but now I am going in circles and I can't figure out how to make this thing - I'm just getting overwhelmed because the different tutorials and documentation that I'm reading all go into the advanced stuff before I can get the basic thing working.
Do I need separate search and results templates? Right now I'm getting the error The view book_search.views.search didn't return an HttpResponse object. It returned None instead.
How can I fix this error and/or design this whole thing better?
Here's what I have so far (the script that returns the results in html is pull.py):
The views and urls are from inside the book_search app.
views.py:
from django.shortcuts import render
from django.http import HttpResponse
from . import pull
from .forms import SearchForm
def index(request):
return HttpResponse("Welcome to the index page")
def test_search(request):
context = {'query': 'test query'}
return render(request, 'book_search/search.html', context)
def search(request):
if request.method == "GET":
form = SearchForm(request.GET)
if form.is_valid():
query = form.cleaned_data['query']
results = pull.main(query)
context = {'query': query, 'form': form, 'results': results}
return render(request, 'book_search/results.html', context)
apps.py:
from django.apps import AppConfig
class BookSearchConfig(AppConfig):
name = 'book_search'
urls.py:
from django.urls import path
from . import views
urlpatterns = [
path('index', views.index, name='index'),
path('test', views.test_search, name='test_search'),
path('', views.search, name='search'),
]
forms.py:
class SearchForm(forms.Form):
query = forms.CharField(label='Search', max_length=200)
template base.html:
<html>
<head>
</head>
<body>
<form method="GET" action="/search/">
{% csrf_token %}
{{ form }}
<input type="submit" value="Submit">
</form>
{% block content %}{% endblock %}
</body>
</html>
template results.html:
{% block content %}
{% results %}
{% endblock content %}

Since we guessed that form isn't valid (because no POST handler - you do not send anything to the form) and wrong indentation gives None response, now you can fix reference before assignment:
def search(request):
if request.method == "GET":
form = SearchForm()
context = {'form': form}
elif request.method == "POST":
form = SearchForm(request.POST)
if form.is_valid():
query = form.cleaned_data['query']
results = pull.main(query)
context = {'query': query, 'form': form, 'results': results}
return render(request, 'book_search/results.html', context)
and render errors in results.html template by putting this:
{% if form.errors %}
{% for field in form %}
{% for error in field.errors %}
<div class="alert alert-danger">
<strong>{{ error|escape }}</strong>
</div>
{% endfor %}
{% endfor %}
{% for error in form.non_field_errors %}
<div class="alert alert-danger">
<strong>{{ error|escape }}</strong>
</div>
{% endfor %}
{% endif %}

CSRF verification failed. Request aborted. I think its more of a token mismatch because implementation of {% csrf_token %} is there

Reason given for failure:
CSRF token missing or incorrect.
I have provided the '{% csrf_token %}' as concerned in this html page but I can't sort the error myself, it's probably out of my understanding about django.
eventcreationform.html
<!DOCTYPE html>
<html lang="en">
<head>
{% csrf_token %}
</head>
<body>
<div class="alert-success">
{% if messages %} {{ message }} {% endif %}
</div>
<div class='container'>
<h1>
{% if user.is_authenticated %}
{{ user.username }} !
{% endif %} Please fill this form:
</h1>
<h3>
<form method='POST' enctype="text/plain"> {% csrf_token %} {{ form }}
<button type='submit' class='btn btn-default'>Submit</button>
</form>
</h3>
</div>
</body>
</html>
forms.py
...
class EventForm(forms.ModelForm):
event_name = forms.CharField(label='Name')
event_date_time = forms.DateTimeField(label='Date and Time',
widget=forms.DateTimeInput)
address = forms.CharField(label='Address')
class Meta:
model = CreatedEvent
fields = ('event_name', 'event_date_time', 'address')
...
urls.py
from django.conf.urls import url
from django.views.generic import TemplateView
from rest_framework.urlpatterns import format_suffix_patterns
from api import views
from django.conf import settings
from django.conf.urls.static import static
app_name = 'api'
urlpatterns = [
....
url(r'^register/', views.Register.as_view(), name='register'),
url(r'^eventform/', views.EventCreationForm.as_view(), name='eventform'),
....
]
urlpatterns = format_suffix_patterns(urlpatterns)
urlpatterns += static(settings.STATIC_URL,
document_root=settings.STATIC_ROOT)
urlpatterns += static(settings.MEDIA_ROOT, document_root=settings.MEDIA_ROOT)
views.py
....
class EventCreationForm(View):
template_eventcreationform = 'eventcreationform.html'
form_class = EventForm
def get(self, request):
form = self.form_class(None)
return render(request, self.template_eventcreationform, {'form':
form})
def post(self, request):
# data is here
form = self.form_class(request.POST)
if form.is_valid():
event = form.save(commit=False)
user = request.user.objects
form.user = user.email
event_name = form.cleaned_data.get('event_name')
event_date_time = form.cleaned_data.get('event_date_time')
event_address = form.cleaned_data.get('address')
event.save()
message = 'Event added'
return render(request, 'base.html', {'message': message})
else:
message = 'Invalid form data, try again'
form = self.form_class(None)
return render(request, self.template_eventcreationform,
{'message': message, 'form': form})
....

The error is gone, i think the issue was with 'enctype=text/plain-text' and i just removed it.