Django is a high-level web framework written in Python that encourages rapid development and clean, pragmatic design. It follows the model-view-template (MVT) architecture pattern, which is similar to the model-view-controller (MVC) pattern used in other web frameworks. Django is known for its simplicity, flexibility, and scalability, making it a popular choice for building web applications.
In this tutorial, we will cover the basics of Django and walk through the process of creating a simple web application using Django. We will cover topics such as setting up a Django project, creating models, views, and templates, handling URLs, and deploying the application to a production server.
Setting up Django
To get started with Django, you first need to install it on your system. You can do this using pip, which is the package installer for Python. Open a terminal window and run the following command:
pip install djangoOnce Django is installed, you can create a new Django project by running the following command:
django-admin startproject myprojectThis will create a new directory called myproject containing the files and directories needed to start a Django project. You can navigate to the project directory using the cd command:
cd myprojectCreating models
In Django, models are used to define the structure of the data that will be stored in the database. Models are defined using Python classes that inherit from the django.db.models.Model class. For example, let’s create a simple model for a blog post:
from django.db import models
class Post(models.Model):
title = models.CharField(max_length=200)
content = models.TextField()
created_at = models.DateTimeField(auto_now_add=True)This model defines a Post class with three fields: title, content, and created_at. The title field is a CharField with a maximum length of 200 characters, the content field is a TextField, and the created_at field is a DateTimeField that is automatically set to the current date and time when a new post is created.
To use this model in our Django project, we need to register it in the admin panel. Open the admin.py file in the app directory and add the following code:
from django.contrib import admin
from .models import Post
admin.site.register(Post)This code tells Django to register the Post model in the admin panel so that we can manage blog posts from the Django admin interface.
Creating views
Views in Django are Python functions or classes that take a web request and return a web response. Views are responsible for processing requests, interacting with models, and rendering templates. Let’s create a view for displaying a list of blog posts:
from django.shortcuts import render
from .models import Post
def post_list(request):
posts = Post.objects.all()
return render(request, 'post_list.html', {'posts': posts})In this view, we use the render function to render the post_list.html template with a context containing all the blog posts retrieved from the database. We use the Post.objects.all() method to fetch all the posts from the Post model.
Creating templates
Templates in Django are HTML files that contain the layout and structure of a web page. Templates are used to display data to the user, and they can be rendered using the Django template language. Let’s create a simple template for displaying a list of blog posts:
<!DOCTYPE html>
<html>
<head>
<title>Blog Post List</title>
</head>
<body>
<h1>Blog Post List</h1>
{% for post in posts %}
<h2>{{ post.title }}</h2>
<p>{{ post.content }}</p>
<p>{{ post.created_at }}</p>
{% endfor %}
</body>
</html>This template iterates over the list of blog posts passed from the view and displays the title, content, and creation date of each post.
Handling URLs
In Django, URLs are used to map web requests to specific views or functions. URLs are defined in the urls.py file of the project and app directories. Let’s create a URL pattern for displaying the list of blog posts:
from django.urls import path
from .views import post_list
urlpatterns = [
path('', post_list, name='post_list'),
]This URL pattern maps the root URL of the website to the post_list view we created earlier. When a user visits the root URL, Django will call the post_list view to display the list of blog posts.
Deploying the application
Once you have finished building your Django web application, you may want to deploy it to a production server. There are several ways to deploy a Django application, but one common method is to use a web server such as Nginx or Apache in conjunction with a WSGI server such as Gunicorn or uWSGI.
To deploy your Django application, you will need to install the necessary dependencies on the production server, configure the web server and WSGI server, and deploy your project code to the server. It is also recommended to set up a database server such as PostgreSQL or MySQL to store the data for your application.
Conclusion
Django is a powerful web framework that makes it easy to build web applications in Python. In this tutorial, we covered the basics of Django and walked through the process of creating a simple web application using Django. We discussed setting up a Django project, creating models, views, and templates, handling URLs, and deploying the application to a production server. With this knowledge, you should be well-equipped to start building your own web applications using Django.
Yeah but 7 shots from a 6 shooter?
Meh
The D is silent
I know….
Essa trilha sonora é muito linda 👏👏👏👏❤️❤️
Fanning a gun at that range with two badly injured hands…just not believable.
Джанго никогда не будет негром! 😂
2:57 impressive background
Imagine what he could do with a healthy hand.
I love the sliding camera movement as the scene opens
Se não estou enganado o diretor deste filme é Sergio Corbuci. Era assim como Leone um ótimo diretor.
3:57 Can you hear this?
I like this cowboy flim most.
Em nome da Lei❤
Uat ă bulșit 😂😂
I just gotta say it ….. good fuckin luck getting the trigger gaurd screws out with your teeth lol.
My favorite movie 🎬 🎞 🎥 🎦 😊❤
Epic, master piece
Amém 🖐️
Cena época 👏👍🤠📽🎞❤
isso se chama cinema