Having trouble with slug - django

I was writing a model online shop django app, wanted to incorporate slug in it. Having trouble in opening a page.
This is my model:
from __future__ import unicode_literals
from django.db import models
from django.db.models.signals import pre_save
from django.utils .text import slugify
class Customer(models.Model):
customer_name = models.CharField(max_length=200)
slug = models.SlugField(unique = True)
def __str__(self):
return self.customer_name
def get_absolute_url(self):
return reverse("OnlineShop:order", kwargs={"slug": self.slug})
def pre_save_customer_receiver(sender, instance, *args, **kwargs):
slug = slugify(instance.customer_name)
exists = Customer.objects.filter(slug = slug).exists()
if exists:
slug = "%s-%s" % (slug,instance.id)
instance.slug=slug
pre_save.connect(pre_save_customer_receiver, sender = Customer)
This is my view:
def customer(request):
customer_list = Customer.objects.all()
template_path = 'OnlineShop/customer.html'
context={
'customer_list':customer_list,
}
return render(request,template_path,context)
def order(request,slug):
Customer = Customer.objects.filter(slug=slug)
''' some code from here '''
And my template customer.html:
<h1>List of Customers:</h1>
<ul>
{% for customer in customer_list %}
<li><a href='{% url 'order' customer.slug %}'>{{ customer.customer_name }}<br></li>
{% endfor %}
</ul>
This is my urls.py
from django.conf.urls import url
from . import views
urlpatterns=[
url(r'^$',views.customer, name='customer'),
url(r'^customer/(?P<slug>[\w-]+)$',views.order, name='order'),
]
Is the problem in the template? What is wrong?

I hope you've defined your urls.py like below,
from django.conf.urls import url, include
from . import views
onlineshop_patterns = [
url(r'^$', views.customer, name='customer'),
url(r'^customer/(?P<slug>[\w-]+)$', views.order, name='order'),
]
urlpatterns = [
# ...
url(r'^OnlineShop/', include(onlineshop_patterns)),
# ...
]
Read Reverse resolution of URLs and Regex for SlugField.

Related

get request in django?

I have problem with django request.I dont know. I tried to do everything, but I got
'blog' object has no attribute 'get'. I want to do mini blog on my website,but it isnt working now. I would like to get all objects from database.(Sorry,If I did something wrong,I am beginner in django and tried to functions for my website) :)
models.py
from django.db import models
# Create your models here.
CHOOSE =[
('Usual','Обычный тариф'),
('Premium','Премиум тариф'),
('Prise','Аукционный')
]
class VDSTARIFS( models.Model):
id = models.CharField(max_length=40, primary_key= True,serialize=True)
name = models.CharField(max_length=20, verbose_name = 'Цены')
choosen = models.CharField(max_length= 20, choices = CHOOSE, verbose_name = 'Тариф', help_text='Выбор тарифного плана.')
title = models.CharField(max_length= 15)
def __str__(self):
return str(self.title)
class blog(models.Model):
id = models.CharField(max_length=40, primary_key= True,serialize=True)
message = models.TextField( verbose_name= 'Сообщение блога')
titleblog = models.CharField(max_length=50, verbose_name = 'Название')
img = models.ImageField(upload_to = 'admin/', verbose_name= 'Картинка' )
def __str__(self):
return str(self.titleblog)
def get_all_objects(self): ##maybe I have troubles with it.
queryset = self.__class__.objects.all()
blog.html
{% csrftoken %}
{% for item in message %}
{% endfor %}
views.py
from django.shortcuts import render
from django.http import HttpResponse
from django.shortcuts import render
from django.http import HttpResponseRedirect
import os
from polls.models import VDSTARIFS
from polls.models import blog
from django.template.loader import render_to_string
def index_view(request):
#return HttpResponse("<h1>Hello</h1>")
return render(request, "home.html", {})
def about(request):
return render(request, "about.html", {})
def minecraft(request):
return render(request, "minecraft.html",{})
def vds(request):
HTML_STRING = render_to_string("vds.html", context = context1)
return HttpResponse(HTML_STRING)
try:
VDS1 = VDSTARIFS.objects.get(id=0)
name = VDS1.name
except VDSTARIFS.DoesNotExist:
VDS1 = None
context1 = {
'name':name,
'prise':VDS1,
}
def messagesblog(request,self):
HTML_STRING = render_to_string('blog.html')
return HttpResponse(HTML_STRING)
urls.py
from django.contrib import admin
from django.urls import path
from polls import views
from django.conf import settings
from django.conf.urls.static import static
urlpatterns = [
path('admin/', admin.site.urls),
path('', views.index_view, name='home'),
path('vds', views.vds, name='vds' ),
path('minecraft', views.minecraft, name='minecraft' ),
path('about', views.about, name='about'),
path('blog', views.blog, name='blog')
]
The actual error is probably caused by the wrong url pattern:
path('blog', views.blog, name='blog')
views.blog refers to the blog model due to:
from polls.models import blog
What you need here is the view not the model, so:
path('blog', views.messagesblog, name='blog')
Then, remove the "self" argument from your messagesblog function.
Use the "render" function from django.shortcuts and provide a context with the blog objects:
def messagesblog(request):
return render(request, "blog.html", {message: blog.objects.all()})
That might solve your problem.
Still, there are some things you could improve.
E.g.: Don't use "id" fields in your model definitions if you don't really, really have to, as this is usually an auto-generated number (BigInt) field.
That's only one tip from an old Django veteran happy to be finally heard. You'll find out much more yourself as you proceed.

get_absolute_url: error of Reverse for 'article-detail' not found

I am using class based views to create a post. I have used get_absolute_url to go to the post page after clicking on post but it is giving an error of no reverse match.
this is my modelspy
from django.db import models
from django.conf import settings
from django.urls import reverse
# Create your models here.
class BlogPost(models.Model):
title = models.CharField(max_length = 50 , null=False,blank=False)
body = models.TextField(max_length = 5000 , null=False,blank=False)
date_published = models.DateTimeField(auto_now_add=True)
date_update = models.DateTimeField(auto_now_add=True)
author = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
def __str__(self):
return self.title
def get_absolute_url(self):
return reverse('article-detail', args=(str(self.id)))
this is my urls.py:
urlpatterns = [
path('',views.home,name="home"),
path('home2/',HomeView.as_view(),name = "home2"),
path('article/<int:pk>',ArticleDetailView.as_view(),name = "article-detail"),
path('add_post/',AddPostView.as_view(),name="add_post"),
]
this is home2.html:
<ul>
{%for post in object_list %}
<li>{{post.title}}-{{post.author}}<br/>
{{post.body}}</li>
{%endfor%}
</ul>
this is views.py:
from django.shortcuts import render
from .models import *
from .forms import *
from django.views.generic import ListView,CreateView
from django.views.generic.detail import DetailView
# Create your views here.
def home(request):
return render(request,'post/home.html')
class HomeView(ListView):
model = BlogPost
template_name = "post/home2.html"
class ArticleDetailView(DetailView):
model = BlogPost
template_name = "post/article_details.html"
context_object_name = 'post'
class AddPostView(CreateView):
model = BlogPost
template_name = "post/add_post.html"
fields = '__all__'
I would suggest doing something like. I provide 2 methods.
1st method:
By using get_absolute_url
from django.urls import reverse
def get_absolute_url(self):
return reverse('post:article-detail', args=(self.id)) #post is the app_name
urls.py
url(r'^article/(?P<pk>\d+)/$', ArticleDetailView.as_view(), name='article-detail'),
home2.html
<ul>
{%for post in object_list %}
<li>
{{post.title}}-{{post.author}}<br/>{{post.body}}
</li>
{%endfor%}
</ul>
2nd Method:
By using template tag.Here get absolute url with help of template tag.
home2.html
{% load templatehelpers %}
<ul>
{%for post in object_list %}
<li>
{{post.title}}-{{post.author}}<br/>
{{post.body}}
</li>
{% endfor %}
</ul>
Here we use a new simple tag namely abs_url (absolute url) in templatehelpers.py (Template tag). And app_name is the name of the app.
templatehelpers.py
from django import template
from django.urls import reverse
register = template.Library()
#register.simple_tag
def abs_url(value, request, **kwargs):
return reverse(value,kwargs=kwargs)
If you change this
def get_absolute_url(self):
return reverse('article-detail', args=(str(self.id)))
to this
def get_absolute_url(self):
return reverse('home')
You will not get the error, but you will not either be redirected to the post you just posted.
So if your goal is to just get rid of this error, but don't care about where you get redirected afterwards, then this is the solution for you.

In the process of categorising my blogs but keep hitting the wall "Page not found 404"

I am a complete beginner so I apologies for my noobiness explanation. I am in the process of categorising my blogs.
I created a model -> migrated it -> imported in view.py -> Imported the view that I created into urls.py -> and created URL for my new page but when I add the href to other pages (home) it takes me to the error.
My codes:
models.py
class Category(models.Model):
name = models.CharField(max_length=100)
def __str__(self):
return self.name
class Post(models.Model):
title = models.CharField(max_length=100)
content=models.TextField()
date_posted=models.DateTimeField(default=timezone.now)
author=models.ForeignKey(User, on_delete=models.CASCADE)
category = models.CharField(max_length=100, default='Engineering')
def __str__(self):
return self.title
def get_absolute_url(self):
return reverse('post-detail', kwargs={'pk': self.pk})
Views.py:
from .models import Post, Category
class CategoryListView(ListView):
model = Post
template_name= 'blog/category_posts.html'
context_object_name = 'posts'
ordering = ['-date_posted']
paginate_by = 3
urls.py:
from django.urls import path
from .views import (
PostListView,
PostDetailView,
PostCreateView,
PostUpdateView,
PostDeleteView,
UserPostListView,
CategoryListView)
path('category/<str:category>/', CategoryListView.as_view(), name='category-posts'),
home.html
{{ post.category }}
In addition to what Arun said.
I think you need to set url_patters in your urls.py. Something like this:
from django.urls import path
from .views import (
PostListView,
PostDetailView,
PostCreateView,
PostUpdateView,
PostDeleteView,
UserPostListView,
CategoryListView)
urlpatterns = [
path('category/<str:category>/', CategoryListView.as_view(), name='category-posts'),
]
You should also pass the category in your url, like this
{{ post.category }}
Because your url needs a str parameter category.

Django 2.0 NoReverseMatch: not a registered namespace

My goal is to Create hyperlinks which would toss a keyword into a views function which would then pull a query from my db onto the page.
GOAL: Press hyperlink which would give me query of a specific major.
I was attemping to use the converter,
So the goal was, 1 being the first step, 3 being final step.
Is this possible?
1) Click the hyperlink -> Major = Accounting
2)URL.py
path(<str:Accounting/, views.Major, name=Major)
3)Views.py
def Major(request, Accounting):
major_choice = professor.objects.filter(Major = Accounting)
return render(request, 'locate/major.html', {'major_choice': major_choice})
NOTE: I replaced variables with what I want it to contain "Accounting", you will notice inside the bottom views.py its called "Major".
Index.html
Accounting
major.html
<ul>
{% for major in major_choice %}
<li>{{major.ProfessorName}}</li>
{%endfor%}
</ul>
urls.py
from django.urls import path
from . import views
urlpatterns = [
path('', views.index, name='index'),
path('<str:Major/', views.Major, name='Major')
]
models.py
from django.db import models
class professor(models.Model):
ProfessorIDS = models.IntegerField()
ProfessorName = models.CharField(max_length=100)
ProfessorRating = models.DecimalField(decimal_places=2,max_digits=4)
NumberofRatings = models.CharField(max_length=50)
Major = models.CharField(max_length=50)
def __str__(self):
return self.ProfessorName
views.py
from django.http import HttpResponse
from django.shortcuts import render
from .models import professor
def index(request):
professors = professor.objects.all()
return render(request, 'locate/index.html', {'professors': professors})
def Major(request, major):
major_choice = professor.objects.filter(Major = major)
return render(request, 'locate/major.html', {'major_choice': major_choice})
Please update your url path to this:
path('<str:Major>/', views.Major, name='Major')
And in your html:
Accounting
in views:
def Major(request, Major):
....

How to use {{ post.title }} from blog.models into home_app template

I want to use the {{ post.title }} and {{ for post in object_list }}
into my home template to show the latest 4 posts, I tried to import from blog.models import Post, but it doesn't work. I guess I'm putting it in the wrong place.
blog.models
from django.db import models
from ckeditor.fields import RichTextField
class Post(models.Model):
title = models.CharField(max_length = 140)
image = models.ImageField(upload_to="media", blank=True)
body = RichTextField(config_name='default')
date = models.DateField()
def __str__(self):
return self.title
home.urls
from django.urls import path
from . import views
urlpatterns = [
path('', views.HomePageView.as_view(), name='home'),
]
home.views
from django.views.generic import TemplateView
from allauth.account.forms import LoginForm
class HomePageView(TemplateView):
template_name = 'home/index.html'
mysite tree look like this
mysite
home
admin
app
models
tests
urls
views
blog
admin
app
models
tests
urls
views
You can override get_context_data and add the latest blog posts to the template context.
from blog.models import Post
class HomePageView(TemplateView):
template_name = 'home/index.html'
def get_context_data(self, **kwargs):
context = super(HomePageView, self).get_context_data(**kwargs)
context['object_list'] = Post.objects.order_by('-date')[:4]
return context