Develop Reference

NoReverseMatch at /'blog' is not a registered namespace

I am trying to link two pages. Page files are home.html and pageOne.html. I am getting "NoReverseMatch at /'blog' is not a registered namespace". I am using django. When I first created the app, I named it artclBlog, I then created a templates folder and another folder within that one, this one I named blog. I think I should have kept these two names the same, this may have caused some confusion in my code.
pic of error
my views.py
from django.shortcuts import render, get_object_or_404
from .models import Blog
def home(request):
blogs = Blog.objects.order_by('-date')
return render(request, 'blog/home.html', {'blogs': blogs})
my urls.py
from django.contrib import admin
from django.urls import path, include
from django.conf.urls.static import static
from django.conf import settings
from artclBlog import views
urlpatterns = [
path('admin/', admin.site.urls),
path('', views.home, name='home'),
path('<int:blog_id>/', views.PageOne, name='PageOne')
]
urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
my models.py
from django.db import models
class Blog(models.Model):
title = models.CharField(max_length=200, default='')
summary = models.CharField(max_length=200, default='')
pageOne = models.TextField(default='')
pageTwo = models.TextField(default='')
pageThree = models.TextField(default='')
pageFour = models.TextField(default='')
date = models.DateField(default='')
def __str__(self):
return self.title
home.html
{% for blog in blogs %}
<a href="{% url 'blog:PageOne' blog.id %}">
<h2 id="txt">{{ blog.title }}</h2>
</a>
<h4 id="txt">{{ blog.date|date:'M d y' }}</h4>
<p id="txt">{{ blog.summary|truncatechars:190 }}</p>
<hr>
{% endfor %}

You did not define an app_name in your urls.py, hence that means that blog: in blog:PageOne makes no sense. You thus either define an app_name, or remove the namespace.
Option 1: Add an app_name in urls.py
You can specify the namespace by writin an app_name in the urls.py:
from django.contrib import admin
from django.urls import path, include
from django.conf.urls.static import static
from django.conf import settings
from artclBlog import views
app_name = 'blog'
urlpatterns = [
path('admin/', admin.site.urls),
path('', views.home, name='home'),
path('<int:blog_id>/', views.PageOne, name='PageOne')
]
urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
This however means that thus all views now use this namespace, including home for example.
Option 2: Remove the namespace
Another option is to remove the namespace in the {% url … %} template tag [Django-doc]:
{% for blog in blogs %}
<a href="{% url 'PageOne' blog.id %}">
<h2 id="txt">{{ blog.title }}</h2>
</a>
<h4 id="txt">{{ blog.date|date:'M d y' }}</h4>
<p id="txt">{{ blog.summary|truncatechars:190 }}</p>
<hr>
{% endfor %}

This mistake comes usually when you have created different apps in your project.
First you do:
django-admin startproject mainapp
Then you do
python manage.py startapp secondapp
urls.py in your secondapp folder would automatically have app_name = 'secondapp'. However you must add in mainapp urls.py the following:
urlpatterns = [
...
path('secondapp/',include('secondapp.urls',namespace='secondapp')),
...
]
This is because your mainapp is the one that has the main access to the project and needs to know your secondapp urls.

Django Template - Cannot iterate throught this list and get menu item

i have one project andromeda where is 2 apps. 1 is blog and seccond one is blogmenu
but when I want to get information from the blog app there is no problem and i can get all information. but when I want to get a menu item from blogmenu I'm getting now error but there is empty navigation bar.
blogmenu urls.py
from django.contrib import admin
from django.urls import path,include
from django.conf import settings
from django.conf.urls.static import static
urlpatterns = [
path('admin/', admin.site.urls),
path('', include('blog.urls')),
path('', include('blogmenu.urls')),
]
if settings.DEBUG:
urlpatterns += static(settings.MEDIA_URL,
document_root=settings.MEDIA_ROOT)
blogmenu views.py
from django.shortcuts import render
def Blog_Menu(request):
Menu_items = Menu.objects.all()
template_name = 'front/index.html'
return render(request, template_name, {"Menu_items":Menu_items})
blogmenu models.py
from django.db import models
class Menu(models.Model):
Menu_name = models.CharField(max_length=100,blank=True)
Menu_slug = models.SlugField(name="სლაგი",blank=True)
Menu_image = models.ImageField(upload_to="menuimages")
Menu_url = models.CharField(name="url",max_length=100,blank=True,null=True)
class Meta:
verbose_name = "მენიუ"
def __str__(self):
return self.Menu_name
sample html template code
{% for menu in Menu_items %}
<li class="main-menu-item">
just text
</li>
{% endfor %}

When iteration items in loop you should post something. You can do the below in your template.
{% for menu in Menu_items %}
<li class="main-menu-item">
{{ menu.Menu_name }}
</li>
{% endfor %}

Seems to me that you just forgot to use the object from the for loop.
This is probably what your looking for:
{% for menu in Menu_items %}
<li class="main-menu-item">
{{ menu.Menu_name }}
</li>
{% endfor %}
If this isn't working either then I would suggest putting a print(Menu_items) after you make the query in your blogmenu views.py and see if your getting your data there.
Also don't forget to import your model in your views.py.

Django save() method does not insert data to my Mysql database

I have tried to entered data to Mysql database using Django. The user enters the required data through addSubscriber.html page to save in the database but the data entered is not saved in the database. Whenever I check the Mysql table (in this case 'Subscribers' table), the table is empty. Should I install mysql-connecter or not?
Here are my files:
views.py
from django.shortcuts import render, redirect
from django.contrib.auth.decorators import login_required
from django.views import generic
from .models import Subscribers
from .forms import addSubsForm
#login_required
def dashboard(request):
user = request.user
context = {'user': user}
template = 'dashboard.html'
return render(request, template, context)
#login_required
def addSubscriber(request):
template = 'addSubscriber.html'
if request.method == 'POST':
form = addSubsForm(request.POST)
if form.is_valid():
name = form.cleaned_data['name']
area = form.cleaned_data['area']
phoneNumber = form.cleaned_data['phoneNumber']
installationCost = form.cleaned_data['installationCost']
billNumber = form.cleaned_data['billNumber']
print name
Subs = Subscribers.objects.create(name=name, area=area, phoneNumber=phoneNumber, installationCost=installationCost, billNumber=billNumber)
Subs.save()
return redirect('report')
else:
form = addSubsForm()
return render(request, template, {'form': form})
#login_required
def report(request):
context = locals()
template = 'report.html'
return render(request, template, context)
models.py
from __future__ import unicode_literals
from django.db import models
class Subscribers(models.Model):
name = models.CharField(max_length=120)
area = models.CharField(max_length=30)
phoneNumber = models.CharField(max_length=10)
installationCost = models.CharField(max_length=10)
billNumber = models.CharField(max_length=100, unique=True)
addSubscriber.html
{%extends 'base.html'%}
{% load staticfiles %}
{% load crispy_forms_tags %}
{% block content %}
<div class="row">
<div class="col-xs-7">
{% if form %}
<br>
<form class="POST" action="." method="post">
{% csrf_token %}
{{ form|crispy }}
<input type="submit" value="submit form" class="btn btn-primary"/>
</form>
{% endif %}
</div>
</div>
{% endblock %}
urls.py
from dashboard import views as dashboard_views
from profiles import views as profiles_views
from django.conf import settings
from django.conf.urls import url, include
from django.conf.urls.static import static
from django.contrib import admin
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^$', profiles_views.home, name='homepage'),
url(r'^contact/$', profiles_views.contact, name='contact'),
url(r'^dashboard/$', dashboard_views.dashboard, name='dashboard'),
url(r'^dashboard/addSubscriber/$', dashboard_views.addSubscriber, name='addSubscriber'),
url(r'^dashboard/userDetail/$', dashboard_views.userDetail, name='userDetail'),
url(r'^dashboard/report/$', dashboard_views.report, name='report'),
url(r'^account/', include('allauth.urls')),
]
# this statement says that: if in the settings file, DEBUG is true than use this static URL
if settings.DEBUG:
urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)
urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

Since you are using two databases, for saving entities you should specify which database to save by specifying
Subs.save(using='db2')
According to Django documentation:
If you don’t specify using, the save() method will save into the
default database allocated by the routers.

well you dont need all this extra things in the view as you are using form and why use create and also save??
just try this inside the form.is_valid
if form.is_valid():
f = form.save(commit=False)
f.save(using='db2')
return redirect('report')

Django urls.py not rendering correct template

This is my urls.py
"""s7h URL Configuration
The `urlpatterns` list routes URLs to views. For more information please see:
https://docs.djangoproject.com/en/1.8/topics/http/urls/
Examples:
Function views
1. Add an import: from my_app import views
2. Add a URL to urlpatterns: url(r'^$', views.home, name='home')
Class-based views
1. Add an import: from other_app.views import Home
2. Add a URL to urlpatterns: url(r'^$', Home.as_view(), name='home')
Including another URLconf
1. Add an import: from blog import urls as blog_urls
2. Add a URL to urlpatterns: url(r'^blog/', include(blog_urls))
"""
from django.conf.urls import include, url
from django.contrib import admin
from django.conf import settings
from django.conf.urls.static import static
urlpatterns = [
url(r'^admin/', include(admin.site.urls)),
url(r'^articles/', include('article.urls')),
url(r'^',include('django.contrib.auth.urls')),
url(r'^projects/', include('project.urls')),
#Serve Media Files
url(r'^media/(?P<path>.*)$', 'django.views.static.serve', {
'document_root': settings.MEDIA_ROOT,
}),
#subscribe
url(r'^subscribe/$', 'article.views.subscribe'),
url(r'^verify/$', 'article.views.activateSubscriber'),
# user auth urls
url(r'^home/$', 's7h.views.home'),
url(r'^', 's7h.views.home'),
url(r'^accounts/login/$', 's7h.views.login'),
url(r'^accounts/auth/$', 's7h.views.auth_view'),
url(r'^accounts/logout/$', 's7h.views.logout'),
url(r'^accounts/loggedin/$', 's7h.views.loggedin'),
url(r'^accounts/invalid/$', 's7h.views.invalid_login'),
# user registration urls
url(r'^accounts/register/$', 's7h.views.register'),
url(r'^accounts/register_success/$', 's7h.views.register_success'),
url(r'^accounts/register_auth/$', 's7h.views.register_auth'),
url(r'^contact/$', 's7h.views.contact'),
]+ static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)
handler400 = 's7h.views.custom_400'
handler403 = 's7h.views.custom_403'
handler404 = 's7h.views.custom_404'
handler500 = 's7h.views.custom_500'
if not settings.DEBUG:
from django.contrib.staticfiles.urls import staticfiles_urlpatterns
urlpatterns += staticfiles_urlpatterns()
This is my views.py
from django.shortcuts import render, render_to_response, RequestContext
from django.http import HttpResponseRedirect
from django.contrib import auth,messages
from django.core.context_processors import csrf
from django.template import RequestContext
from django.template.loader import get_template
from forms import MyRegistrationForm
from article.models import Article, ArticleCategory
from project.models import Project, ProjectCategory
def home(request):
args={}
article = Article.objects.earliest("-pub_date")
project = Project.objects.earliest("-pub_date")
article_category = ArticleCategory.objects.all()
project_category = ProjectCategory.objects.all()
args.update(csrf(request))
args['article'] = article
args['project'] = project
args['project_categories'] = project_category
args['article_categories'] = article_category
args['loggedin'] = request.session.get('email', None)
return render_to_response('home.html', args)
def login(request):
c = {}
c.update(csrf(request))
return render_to_response('login.html', c)
def auth_view(request):
username = request.POST.get('username', '')
password = request.POST.get('password', '')
user = auth.authenticate(username=username, password=password)
if user is not None:
auth.login(request, user)
request.session['email'] = user.email
return render(request, "loggedin.html", locals(),context_instance=RequestContext(request))
else:
return HttpResponseRedirect('/accounts/invalid/')
def loggedin(request):
return render_to_response('loggedin.html', {})
def invalid_login(request):
return render_to_response('invalid_login.html')
def logout(request):
auth.logout(request)
return HttpResponseRedirect('/accounts/login/')
This is my template for login
{% extends "user_forms.html" %}
{% block title %}
S7H - Login
{% endblock %}
{% block main %}
<span class="fa fa-user bigicon"></span>
<h2>Enter Details</h2>
<form action = "/accounts/auth/" method = "POST">{% csrf_token %}
<p><input type="text" name="username" required placeholder="Username" autofocus></p>
<p><input type="password" name="password" required placeholder="Password"></p>
<button class="btn btn-default" type="submit" name="submit" />Sign In</button>
Sign Up
</form>
<small>Forgot your password?</small><br />
{% if messages %}
{% for message in messages %}
<small {% if message.tags %} class="{{message.tags}}" {% endif %}>{{message}}</small>
{% endfor %}
{% endif %}
{% endblock %}
Now when I do http://127.0.0.1:8000/accounts/login/ , Django should render login.html because url accounts/login/ leads me to def login(request): and there in render_to_response() I have mentioned login.html to get rendered but instead of it, Django renders my home.html file. URL of the browser changes to http://127.0.0.1:8000/accounts/login/ when I press the login button on my home page but it keeps on rendering the same home.html template.
This thing is happening with other urls also. Every url is rendering home.html template.
I double checked all my urls, views and templates, I have not been able to figure out my mistake. Django is also not giving any Exceptions and Error messages.
Also in the terminal the HTTP response is 200 OK :/
[08/Jun/2015 01:38:40]"GET /accounts/login/ HTTP/1.1" 200 10201
Help me!

Your s7h.views.home pattern has no terminating $ so it matches every URL.

How to embed the results of my django app inside a template using something like {% include "app" %}?

So far I have been able to Create a project and setup a Homepage. So far I have had success with styling the page and getting my nav areas setup. I have also created an app that pulls a list of category names from my database and displays it in a right-justified list. When I point my browser to the app url, it works perfectly, but when I try to include the view in my project it displays the base panel with an error, and the dictionary I passed to the view does not appear to be available.
This is what I get when I load the home url localhost:8000/ in my browser:
This is what I get when I load the app url localhost:8000/categories/ in my browser:
Why am I not able to push the results of my app into my template? Both appear to work but not together?
base_right_panel.html
{% block content %}
<div style="float: right;">
<div id="base_categories" style="margin: 10px; padding-bottom: 10px;">
{% block base_categories %}
{% include "base_categories.html" %}
{% endblock %}
</div>
</div>
{% endblock %}
base_categories.html
{% block content %}
<div class="section" style="float: right;">
<h4 class="gradient">Category List</h4>
<ul>
{% if categories %}
{% for category in categories %}
<li>{{ category.title }}</li>
{% endfor %}
{% else %}
<p>no data! {{ categories|length }}</p>
{% endif %}
</ul>
</div>
{% endblock %}
CategoryList/views.py
from django.views.generic import TemplateView
from CategoryList.models import CategorylistCategorylist #<-- Changed to match inspectdb result
class IndexView(TemplateView):
template_name="base_categories.html" #<-- Changed name from index.html for clarity
def get_context_data(self, **kwargs):
context = super(IndexView, self).get_context_data(**kwargs)
context["categories"] = CategorylistCategorylist.objects.all()
return context
CategoryList/models.py
from django.db import models
class CategorylistCategorylist(models.Model): #<-- Changed to match inspectdb
id = models.IntegerField(primary_key=True)
name = models.CharField(max_length=255L, unique=True)
base_url = models.CharField(max_length=255L, unique=True)
thumb = models.ImageField(upload_to="dummy", blank=True) #<-- Ignored inspectdb's suggestion for CharField
def __unicode__(self):
return self.name
# Re-added Meta to match inspectdb
class Meta:
db_table = 'categorylist_categorylist'
CategoryList/urls.py
from django.conf.urls.defaults import patterns, url, include
from django.contrib import admin
from django.conf import settings
from CategoryList import views
admin.autodiscover()
urlpatterns = patterns('',
url(r'^$', views.IndexView.as_view(), name='base_categories'),
)
if settings.DEBUG:
urlpatterns = patterns('',
url(r'^media/(?P<path>.*)$', 'django.views.static.serve',
{'document_root': settings.MEDIA_ROOT, 'show_indexes': True}),
url(r'', include('django.contrib.staticfiles.urls')),
) + urlpatterns
MySite/urls.py
from django.conf.urls import patterns, include, url
from django.contrib import admin
from django.conf import settings
from home import views as home_view
from CategoryList import views as index_view
admin.autodiscover()
urlpatterns = patterns('',
url(r'^$', home_view.HomeView.as_view(), name="home"),
url(r'^categories/$', index_view.IndexView.as_view(), name='base_categories'),#include('CategoryList.urls')),
url(r'^admin/', include(admin.site.urls)),
#url(r'^admin/doc/', include('django.contrib.admindocs.urls')),
)
if settings.DEBUG:
urlpatterns = patterns('',
url(r'^media/(?P<path>.*)$', 'django.views.static.serve',
{'document_root': settings.MEDIA_ROOT, 'show_indexes': True}),
url(r'', include('django.contrib.staticfiles.urls')),
) + urlpatterns
I have another open question which has the relevant code examples but the question differs from what I am asking here.
Is there a simple way to display mysql data in Django template without creating an app?

You need to add the category queryset to your context in your HomeView. Remember, the view uses the templates to build the response - including a template that you also use in a different view (IndexView) does not cause any interaction with IndexView.
HomeView produces its response by rendering a template. If that template uses {% include %} tags to pull in pieces of other templates, those pieces will be rendered using the context established by HomeView. Nothing you do in IndexView has any effect on HomeView, and vice versa.
Continuing to reason by analogy to string interpolation, pretend your templates are global string variables instead of files on disk. Your situation is something like this:
base_categories = "My categories are: %(categories)s."
base_right_panel = "This is the right panel. Here are other fields before categories."
Using the {% include %} tag is something like string concatenation:
base_right_panel = base_right_panel + base_categories
Then your two views are analogous to this:
def home_view(request):
context = {}
return base_right_panel % context
def index_view(request)
context = {'categories': ['a', 'b', 'c']}
return base_categories % context
Unless you add the categories queryset to the context in HomeView, it will not be available to the template engine when rendering the response.
Your HomeView class should include the get_context_data method that you currently have in your IndexView. I am not sure you actually need IndexView at all, unless you want to have something that serves that page with just the categories list.