How to Use DetailView in Django?
Hi Dev,
This article will provide some of the most important example how to use detailview in django. In this article, we will implement a how to use detailview in django with example. This article will give you simple example of django detailview class based views example. I explained simply step by step django generic detailview example.
Django Class based views are simpler and efficient to manage than function-based views. A function based view with tons of lines of code can be converted into a class based views comes with few lines only.
So, in this example, DetailView is a class view that helps you to display a DetailView refers to a view (logic) to display one instances of a table in the database the object through template render.
let's see bellow example here you will learn how to use detailview in django.
Step 1: Create a Project
In this step, we’ll create a new django project using the django-admin. Head back to your command-line interface and run the following command:
django-admin startproject example
Step 2: Create a App
Now we'll create a single app called core to store a list of post names. We're keeping things intentionally basic. Stop the local server with Control+c and use the startapp command to create this new app.
python3 manage.py startapp core
Step 3: Update setting.py
Next, then update INSTALLED_APPS within our settings.py file to notify Django about the app.
Next, you need to add it in the settings.py file as follows:
settings.py
....
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'core',
]
Step 4: Creating the Model
In this step we will require the database model for storing article details in article table.Open the models.py file and add the following code:
core/models.py
from django.db import models
class Article(models.Model):
title= models.CharField(max_length=300)
content= models.TextField()
pub_date = models.DateTimeField(auto_now_add= True)
Ok, all set. We can engender a migrations file for this change, then integrate it to our database via migrate.
python manage.py makemigrations python manage.py migrate
Step 5: Creating the Views
In this step, we need to configure our views. The ArticleDetailView page will template and define and Article model as well as, open the views.py file and add:
core/models.py
from django.shortcuts import render
from django.views.generic.detail import DetailView
from .models import *
class ArticleDetailView(DetailView):
model = Article
get_context_name = 'article'
def get_context_data(self, *args, **kwargs):
context = super(ArticleDetailView,
self).get_context_data(*args, **kwargs)
# add extra field
context["category"] = "Django"
return context
Step 6: Creating the Template
Next, then with your text editor create new templates files: core/templates/article_detail.html file and the add:
core/templates/article_detail.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Tuts-Station.com</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css">
<style type="text/css">
body{
background-color: #f7fcff;
}
</style>
</head>
<body>
<div class="container mt-5 pt-5">
<div class="row d-flex justify-content-center">
<div class="col-md-10">
<div class="card">
<div class="card-header">
<h4>How to Use DetailView in Django? - <span class="text-primary">Tuts-Station.com</span></h4>
</div>
<div class="card-body">
<div class="row">
<div class="col-md-12">
<h3>{{ article.title }}</h3>
</div>
<div class="col-md-12">
<p>{{ article.content }}</p>
</div>
</div>
<hr>
<div class="row">
<div class="col-md-12">
<a href="#"><span class="badge badge-primary">#{{ category }}</span></a>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
Step 7: Creating URLs
In this section, we need a urls.py file within the core app however Django doesn't create one for us with the startapp command. Create core/urls.py with your text editor and within this file we'll import yet-to-be-created function for each--ArticleDetailView Note as well that we set an optional URL name for each.
Here's what it looks like:
core/urls.py
from django.urls import path
from .views import ArticleDetailView
urlpatterns = [
path('<pk>/', ArticleDetailView.as_view()),
]
Next, we require to add a URL path for our example app which can be done by importing include and setting a path for it.
example/urls.py
from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('admin/', admin.site.urls),
path('', include('core.urls')),
]
Run the Server
In this step, we’ll run the local development server for playing with our app without deploying it to the web.
python manage.py runserver
Next, go to the http://localhost:8000/{id} address with a web browser.
I Hope It will help you....
Happy Pythonic Coding!