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Django blog app won't display edit posts page

Currently working through the Python Crash Course Django section I've got everything but the edit posts page working. I added the edit post link under each post but this error now displays when you try to view the homepage:
Reverse for 'edit_post' with no arguments not found. 1 pattern(s) tried: ['edit_post/(?P<post_id>[0-9]+)/$']
Here is the code I've been using.
from django.db import models
# Create your models here.
class BlogPost(models.Model):
"""A topic the user is learning about"""
title = models.CharField(max_length=200)
body = models.TextField()
date_added = models.DateTimeField(auto_now_add=True)
def __str__(self):
"""A place for the user to create a blog post"""
return self.title
Views
from django.shortcuts import render, redirect
from .models import BlogPost
from .forms import BlogForm
# Create your views here.
def index(request):
"""The home page for Blog"""
return render(request, 'blogs/index.html')
def blogposts(request):
"""Show all blogposts"""
blogposts = BlogPost.objects.order_by('date_added')
context = {'blogposts': blogposts}
return render(request, 'blogs/blogposts.html', context)
def new_post(request):
"""Add a new post"""
if request.method != 'POST':
# No data submitted, create a blank form
form = BlogForm()
else:
# POST data submitted; process data
form = BlogForm(data=request.POST)
if form.is_valid():
form.save()
return redirect('blogs:blogposts')
# Display a blank or invalid form
context = {'form': form}
return render(request, 'blogs/new_post.html', context)
def edit_post(request, post_id):
current_entry = BlogPost.objects.get(id=post_id)
if request.method != 'POST':
# Initial request; pre-fill form with current entry
form = BlogForm(instance=current_entry)
else:
form = BlogForm(instance=current_entry, data=request.POST)
if form.is_valid():
form.save()
return redirect('blogs:index')
context = {'post':post, 'form':form}
return render(request, 'blogs/edit_post.html', context)
URLs
"""Defines URL patterns 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 topics
path('blogposts/', views.blogposts, name='blogposts'),
# Page that displays a single post
path('new_post/', views.new_post, name='new_post'),
# Page for editing a post
path('edit_post/<int:post_id>/', views.edit_post, name='edit_post'),
]
blogposts.html
{% extends "blogs/base.html" %}
{% block content %}
<p>Blog Posts</p>
<ul>
{% for blogpost in blogposts %}
<h1>{{ blogpost }}</h1>
<p>{{ blogpost.body }}</p>
Edit post
{% empty %}
<li>No blogs have been posted yet</li>
{% endfor %}
</ul>
Create a new post
{% endblock content %}
edit_post.html
{% extends "blogs/base.html" %}
{% block content %}
<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 %}

You need to pass the id of the blog post you want to edit.
So in your blogposts.html try:
"{% url 'blogs:edit_post' blogpost.pk %}"

Editing posts in a Django blog

Note: there's a similar question to mine, there're a few differences in our code, and I tried the solutions to his question, didn't work for me.
I'm working on a blog using Django, I'm trying to add an edit_post feature but when I go to localhost:8000 it shows NoReverseMatch, the problem is related to the post's id, I'm trying to create a home page that shows the post's title and it's content.
here'e my code:
models.py
from django.db import models
# Create your models here.
class BlogPost(models.Model):
title = models.CharField(max_length=20)
text = models.TextField()
date_added = models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.title
urls.py
from django.urls import path
from . import views
app_name = 'blogs'
urlpatterns = [
# Home page
path('', views.index, name='index'),
# page for adding a new post
path('new_post/', views.new_post, name='new_post'),
# page for editing a post
path('edit_post/<int:post_id>/', views.edit_post, name='edit_post'),
]
index.html
{% block content %}
<p>My personal Blog</p>
Add a new post
<ul>
{% for p in posts %}
# the problem is probably here
<li>{{ p.title }}</li>
<li>{{ p.text }}</li>
<p>
Edit post
</p>
{% endfor %}
</ul>
{% endblock content %}
edit_post.html
{% block content %}
<p>Edit post:</p>
<form action="{% url 'blogs:edit_post' post.id %}" method='post'>
{% csrf_token %}
{{ form.as_p }}
<button name="submet">Save changes</button>
</form>
{% endblock content %}
new_post.html
{% block content %}
<P>Add a new post:</P>
<form action="{% url 'blogs:new_post' %}" method='post'>
{% csrf_token %}
{{ form.as_p }}
<button name="submet">Add post</button>
</form>
{% endblock content %}
views.py
from django.shortcuts import render, redirect
from .models import BlogPost
from .forms import BlogPostForm
# Create your views here.
def index(request):
posts = BlogPost.objects.order_by('date_added')
context = {'posts': posts}
return render(request, 'blogs/index.html', context)
def new_post(request):
"""Add a new post."""
if request.method != 'POST':
form = BlogPostForm()
else:
form = BlogPostForm(data=request.POST)
if form.is_valid():
new_p = form.save()
return redirect('blogs:index')
context = {'form': form}
return render(request, 'blogs/new_post.html', context)
def edit_post(request, post_id):
post = BlogPost.objects.get(id=post_id)
if request.method != 'POST':
form = BlogPostForm(instance=post)
else:
form = BlogPostForm(instance=post, data=request.POST)
if form.is_valid():
form.save()
return redirect('blogs:index', post_id=post.id)
context = {'post': post, 'index': index, '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 = ['title', 'text']
labels = {'text': ''}
widgets = {'text': forms.Textarea(attrs={'cols':80})}

The problem is with the arguments of the url you are creating on index.html, you are looping posts as p in html so try to change:
Edit post
With
Edit post

cant see my post in my list .html

i created a blog
this is my models.py configurations:
from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User
from django.core.urlresolvers import reverse
# Create your models here.
class PublishedManager(models.Manager):
def get_queryset(self):
return super(PublishedManager, self).get_queryset()\
.filter(status='published')
class post(models.Model):
STATUS_CHOICE=(
('draft','DRAFT'),
('published','Published'),
('admin','admin'),
)
title=models.CharField(max_length=250,null=True)
author=models.ForeignKey(User,related_name='blog_posts',null=True)
slug=models.SlugField(max_length=250,unique_for_date='publish',null=True)
body=models.TextField(default='')
publish=models.DateTimeField(default=timezone.now)
created = models.DateTimeField(auto_now_add=True,null=True)
updated =models.DateTimeField(auto_now=True)
status = models.CharField(max_length=10,
choices =STATUS_CHOICE,
default='draft')
objects = models.Manager()
published = PublishedManager()
class Meta:
ordering = ('-publish',)
def __str__(self):
return self.title
def get_absolute_url(self):
return reverse('blog:post_detail',args=[self.publish.year,
self.publish.strftime('%m'),
self.publish.strftime('%dz'),
self.slug])
and this is my views.py:
from django.shortcuts import render
from .models import post
# Create your views here.
def post_list(request):
posts= post.published.all()
return render(request,'blog/post/list.html',{posts:posts})
def post_detail(request,year,month,day,post):
post=get_object_or_404(post,slug=post,
status = 'published',
publish__year=year,
publish__month=month,
publish__day=day)
return render(request,'blog/post/index.html',{'post':post})
and this is my base.html:
{%load staticfiles%}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>{% block title %}
<link rel="stylesheet" href={% static "/css/blog.css"%}>
{% endblock %}
</title>
</head>
<body>
<div id="content">
{% block content %}
{% endblock %}
</div>
<div id="sidebar">
<h2>my blog</h2>
<h3>this blog</h3>
</div>
</body>
</html>
and my list.html file:
{% extends "blog/base.html" %}
{% block title %}My blog{% endblock %}
{% block content %}
<h1>My Blog</h1>
{% for post in posts %}
<h2>
{{ post.title }}
</h2>
<p class="date">
Published {{ post.publish }} by {{ post.author }}
</p>
{{ post.body|truncatewords:30|linebreaks }}
{% endfor %}
{% endblock %}
and this is my urls.py (app folder)
from django.conf.urls import url
from . import views
urlpatterns = [
url(r'^$',views.post_list,name = 'post_list'),
url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<post>[-\W]+)/$',
views.post_detail,
name='post_detail'),
]
and this is my urls.py file of my project folder:
from django.conf.urls import url,include
from django.contrib import admin
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^blog/', include('myblog.urls',namespace='blog',app_name='blog')),
]
and i have added some post objects using admin user but when i tried to access the page the expected output according to the tutorial looks like this:
enter image description here
but instead my output was :
enter image description here

Firstly, the key in your context dictionary should be the string 'posts', not the variable posts, as #ABDUL pointed out in the comments.
return render(request,'blog/post/list.html',{'posts':posts})
Then you need to fix the NoReverseMatch error. In your get_absolute_url method, you have %dz. It should be '%d'. Remove the z.
def get_absolute_url(self):
return reverse('blog:post_detail',args=[self.publish.year,
self.publish.strftime('%m'),
self.publish.strftime('%d'),
self.slug])

django rendering template issue

I'm just built my django project but have some problem. I want to display title that is in Academy. When I run python manage.py runserver everything is okay but the title is not displayed. I don't know what the problem is.
class.html
{% extends "base.html" %}
{% block content %}
<div>
<div style="margin-top: 200px;">
</div>
{% for academy in academys %}
<h3>{{ academy.title }}</h3>
{% endfor %}
</div>
{% endblock %}
urls.py
...
url(r'^academy/class', 'academy.views.class', name='class'),
views.py
from django.shortcuts import render, Http404
from .models import Academy
def class(request):
template = 'academy/class.html'
try:
academys = Academy.objects.all()
context = {'academy': academys}
except Academy.DoesNotExit:
raise Http404
if request.user.is_authenticated():
return render(request, template, context)
else:
return HttpResponseRedirect("/account/login/")
models.py
...
class Academy(models.Model):
title = models.CharField(max_length=50)
def __unicode__(self):
return self.title

Your context dictionary key is incorrect. Instead of
context = {'academy': academys}
type
context = {'academys': academys}

You've passing 'academy' in your context not 'academys'
context={'academys ': academys}

Tango with Django - Chapter 8 - Exercise

I need some help getting the add_page function to work properly. I am very new to HTML and even newer to Django. The chapter I am working on can be found here: http://www.tangowithdjango.com/book17/chapters/forms.html. Currently my relevent files look like this:
Forms.py
from django import forms
from rango.models import Page, Category
class CategoryForm(forms.ModelForm):
name = forms.CharField(max_length=128, help_text="Please enter the category name.")
views = forms.IntegerField(widget=forms.HiddenInput(), initial=0)
likes = forms.IntegerField(widget=forms.HiddenInput(), initial=0)
slug = forms.CharField(widget=forms.HiddenInput(), required=False)
# An inline class to provide additional information on the form.
class Meta:
# Provide an association between the ModelForm and a model
model = Category
fields = ('name',)
class PageForm(forms.ModelForm):
title = forms.CharField(max_length=128, help_text="Please enter the title of the page.")
url = forms.URLField(max_length=200, help_text="Please enter the URL of the page.")
views = forms.IntegerField(widget=forms.HiddenInput(), initial=0)
class Meta:
# Provide an association between the ModelForm and a model
model = Page
# What fields do we want to include in our form?
# This way we don't need every field in the model present.
# Some fields may allow NULL values, so we may not want to include them...
# Here, we are hiding the foreign key.
# we can either exclude the category field from the form,
exclude = ('category',)
#or specify the fields to include (i.e. not include the category field)
#fields = ('title', 'url', 'views')
def clean(self):
cleaned_data = self.cleaned_data
url = cleaned_data.get('url')
# If url is not empty and doesn't start with 'http://', prepend 'http://'.
if url and not url.startswith('http://'):
url = 'http://' + url
cleaned_data['url'] = url
return cleaned_data
Views.py:
from django.shortcuts import render
from django.http import HttpResponse
from rango.models import Category, Page
from rango.forms import CategoryForm, PageForm
def index(request):
# Query the database for a list of ALL categories currently stored.
# Order the categories by no. likes in descending order.
# Retrieve the top 5 only - or all if less than 5.
# Place the list in our context_dict dictionary which will be passed to the template engine.
category_list = Category.objects.order_by('-likes')[:5]
page_list = Page.objects.order_by('-view')[:5]
context_dict = {'categories': category_list,
'pages': page_list}
# Render the response and send it back!
return render(request, 'rango/index.html', context_dict)
def category(request, category_name_slug):
# Create a context dictionary which we can pass to the template rendering engine.
context_dict = {}
try:
# Can we find a category name slug with the given name?
# If we can't, the .get() method raises a DoesNotExist exception.
# So the .get() method returns one model instance or raises an exception.
category = Category.objects.get(slug=category_name_slug)
context_dict['category_name'] = category.name
context_dict['category_name_slug'] = category_name_slug
# Retrieve all of the associated pages.
# Note that filter returns >= 1 model instance.
pages = Page.objects.filter(category=category)
# Adds our results list to the template context under name pages.
context_dict['pages'] = pages
# We also add the category object from the database to the context dictionary.
# We'll use this in the template to verify that the category exists.
context_dict['category'] = category
except Category.DoesNotExist:
# We get here if we didn't find the specified category.
# Don't do anything - the template displays the "no category" message for us.
pass
# Go render the response and return it to the client.
print context_dict
return render(request, 'rango/category.html', context_dict)
def add_category(request):
# A HTTP POST?
if request.method == 'POST':
form = CategoryForm(request.POST)
# Have we been provided with a valid form?
if form.is_valid():
# Save the new category to the database.
form.save(commit=True)
# Now call the index() view.
# The user will be shown the homepage.
return index(request)
else:
# The supplied form contained errors - just print them to the terminal.
print form.errors
else:
# If the request was not a POST, display the form to enter details.
form = CategoryForm()
# Bad form (or form details), no form supplied...
# Render the form with error messages (if any).
return render(request, 'rango/add_category.html', {'form': form})
def add_page(request, category_name_slug):
try:
cat = Category.objects.get(slug=category_name_slug)
except Category.DoesNotExist:
cat = None
if request.method == 'POST':
form = PageForm(request.POST)
if form.is_valid():
if cat:
page = form.save(commit=False)
page.category = cat
page.views = 0
page.save()
# probably better to use a redirect here.
return category(request, category_name_slug)
else:
print form.errors
else:
form = PageForm()
context_dict = {'form':form, 'category': cat}
return render(request, 'rango/add_page.html', context_dict)
urls.py
from django.conf.urls import patterns, url
from rango import views
urlpatterns = patterns('',
url(r'^$', views.index, name='index'),
# url(r'^about/$', views.about, name='about'),
url(r'^add_category/$', views.add_category, name='add_category'),
url(r'^category/(?P<category_name_slug>[\w\-]+)/add_page/$', views.add_page, name='add_page'),
url(r'^category/(?P<category_name_slug>[\w\-]+)/$', views.category, name='category'),)
I think this ^ is where I am encountering the issue. I manage to get to the "add a page" screen, but when I try to submit something, I receive an error that states I am only supplying 1 argument and add_page() requires 2. I think I may need an additional url that is similar to the "add_category" URL, but that must mean by other URL is pointing to the wrong place?
category.html
<!DOCTYPE html>
<html>
<head>
<title>Rango</title>
</head>
<body>
<h1>{{ category_name }}</h1>
{% if category %}
{% if pages %}
<ul>
{% for page in pages %}
<li>{{ page.title }}</li>
{% endfor %}
</ul>
{% else %}
<strong>No pages currently in category.</strong>
{% endif %}
<li>Add a New Page</li>
{% else %}
The specified category {{ category_name }} does not exist!
{% endif %}
</body>
</html>
add_page.html:
<!DOCTYPE html>
<html>
<head>
<title>Rango</title>
</head>
<body>
<h1>Add a Page</h1>
<form id="page_form" method="post" action="/rango/add_page/">
{% csrf_token %}
{% for hidden in form.hidden_fields %}
{{ hidden }}
{% endfor %}
{% for field in form.visible_fields %}
{{ field.errors }}
{{ field.help_text }}
{{ field }}
{% endfor %}
<input type="submit" name="submit" value="Create Page" />
</form>
</body>
</html>

I edited the add_page function to include category_name_slug:
def add_page(request, category_name_slug):
try:
cat = Category.objects.get(slug=category_name_slug)
except Category.DoesNotExist:
cat = None
if request.method == 'POST':
form = PageForm(request.POST)
if form.is_valid():
if cat:
page = form.save(commit=False)
page.category = cat
page.views = 0
page.save()
# probably better to use a redirect here.
return category(request, category_name_slug)
else:
print form.errors
else:
form = PageForm()
# made the change here
context_dict = {'form':form, 'category': cat, 'category_name_slug': category_name_slug}
return render(request, 'rango/add_page.html', context_dict)
Then I edited the add_page.html to look like this:
<!DOCTYPE html>
<html>
<head>
<title>Rango</title>
</head>
<body>
<h1>Add a Page</h1>
<form id="page_form" method="post" action="/rango/category/{{ category_name_slug }}/add_page/">
{% csrf_token %}
{% for hidden in form.hidden_fields %}
{{ hidden }}
{% endfor %}
{% for field in form.visible_fields %}
{{ field.errors }}
{{ field.help_text }}
{{ field }}
{% endfor %}
<input type="submit" name="submit" value="Create Page" />
</form>
</body>
</html>

if you dont wanna edit your views.py
just doit
<!DOCTYPE html>
<html>
<head>
<title>Rango</title>
</head>
<body>
<h1>Add a Page</h1>
<form id="page_form" method="post" action="/rango/category/{{ category }}/add_page/">
{% csrf_token %}
{% for hidden in form.hidden_fields %}
{{ hidden }}
{% endfor %}
{% for field in form.visible_fields %}
{{ field.errors }}
{{ field.help_text }}
{{ field }}
{% endfor %}
<input type="submit" name="submit" value="Create Page" />
</form>
</body>
</html>
but i have problem to it still cannot be save on database.