This is first part of the series Django For Beginners we are going to see an introduction to Django, we will then see about why to use django, and then its design philosophies then we will see about advantages of django and at last we will which comanies uses django. Just like iTunes, Spotify changed the way people listen to, share and purchase music. When using it, you can access your music library everywhere and on any device. The developers chose Django for two reasons: Fast backend. Machine learning options. With Django, they got not only a full range of Python features, but also made the most of it.
Among the biggest Websites using Django, we have: i. One of the biggest social media apps out there, Instagram is a very popular social app. Django is at the core of Instagram and they have just become a gold-level sponsor of the Django Software Foundation (DSF). Django has great integration with other technologies like iOS. Spotify Clone App in Django. An educational simple clone project of original Spotify Website written in Django. This Project is having the CRUD operation, File Upload, Search operation examples in Django.
Let’s learn by example.
Throughout this tutorial, we’ll walk you through the creation of a basicpoll application.
It’ll consist of two parts:
We’ll assume you have Django installed already. You cantell Django is installed and which version by running the following commandin a shell prompt (indicated by the $ prefix):
If Django is installed, you should see the version of your installation. If itisn’t, you’ll get an error telling “No module named django”.
This tutorial is written for Django 3.1, which supports Python 3.6 andlater. If the Django version doesn’t match, you can refer to the tutorial foryour version of Django by using the version switcher at the bottom right cornerof this page, or update Django to the newest version. If you’re using an olderversion of Python, check What Python version can I use with Django? to find a compatibleversion of Django.
See How to install Django for advice on how to removeolder versions of Django and install a newer one.
Where to get help:
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If you’re having trouble going through this tutorial, please head over tothe Getting Help section of the FAQ.
Creating a project¶
If this is your first time using Django, you’ll have to take care of someinitial setup. Namely, you’ll need to auto-generate some code that establishes aDjango project – a collection of settings for an instance of Django,including database configuration, Django-specific options andapplication-specific settings.
From the command line,
cd into a directory where you’d like to store yourcode, then run the following command:
This will create a
mysite directory in your current directory. If it didn’twork, see Problems running django-admin.
Note
You’ll need to avoid naming projects after built-in Python or Djangocomponents. In particular, this means you should avoid using names like
django (which will conflict with Django itself) or test (whichconflicts with a built-in Python package).
Where should this code live?
If your background is in plain old PHP (with no use of modern frameworks),you’re probably used to putting code under the Web server’s document root(in a place such as
/var/www ). With Django, you don’t do that. It’snot a good idea to put any of this Python code within your Web server’sdocument root, because it risks the possibility that people may be ableto view your code over the Web. That’s not good for security.
Put your code in some directory outside of the document root, such as
/home/mycode .
Let’s look at what
startproject created:
These files are:
The development server¶
Best spotify podcasts. Let’s verify your Django project works. Change into the outer
mysite directory, ifyou haven’t already, and run the following commands:
You’ll see the following output on the command line:
Note
Ignore the warning about unapplied database migrations for now; we’ll dealwith the database shortly.
You’ve started the Django development server, a lightweight Web server writtenpurely in Python. We’ve included this with Django so you can develop thingsrapidly, without having to deal with configuring a production server – such asApache – until you’re ready for production.
Now’s a good time to note: don’t use this server in anything resembling aproduction environment. It’s intended only for use while developing. (We’re inthe business of making Web frameworks, not Web servers.)
Now that the server’s running, visit http://127.0.0.1:8000/ with your Webbrowser. You’ll see a “Congratulations!” page, with a rocket taking off.It worked!
Changing the port
By default, the
runserver command starts the development serveron the internal IP at port 8000.
If you want to change the server’s port, passit as a command-line argument. For instance, this command starts the serveron port 8080:
If you want to change the server’s IP, pass it along with the port. Forexample, to listen on all available public IPs (which is useful if you arerunning Vagrant or want to show off your work on other computers on thenetwork), use:
0 is a shortcut for 0.0.0.0. Full docs for the development servercan be found in the
runserver reference.
Automatic reloading of
runserver
The development server automatically reloads Python code for each requestas needed. You don’t need to restart the server for code changes to takeeffect. However, some actions like adding files don’t trigger a restart,so you’ll have to restart the server in these cases.
Creating the Polls app¶
Now that your environment – a “project” – is set up, you’re set to startdoing work.
Each application you write in Django consists of a Python package that followsa certain convention. Django comes with a utility that automatically generatesthe basic directory structure of an app, so you can focus on writing coderather than creating directories.
Projects vs. apps
Django Example Apps
What’s the difference between a project and an app? An app is a Webapplication that does something – e.g., a Weblog system, a database ofpublic records or a small poll app. A project is a collection ofconfiguration and apps for a particular website. A project can containmultiple apps. An app can be in multiple projects.
Your apps can live anywhere on your Python path. Inthis tutorial, we’ll create our poll app in the same directory as your
manage.py file so that it can be imported as its own top-level module,rather than a submodule of mysite .
Django App Using Spotify Subscription
To create your app, make sure you’re in the same directory as
manage.py and type this command:
That’ll create a directory
polls , which is laid out like this:
This directory structure will house the poll application.
Write your first view¶
Let’s write the first view. Open the file
polls/views.py and put the following Python code in it:
This is the simplest view possible in Django. To call the view, we need to mapit to a URL - and for this we need a URLconf. Free google home from spotify.
To create a URLconf in the polls directory, create a file called
urls.py .Your app directory should now look like:
In the
polls/urls.py file include the following code:
The next step is to point the root URLconf at the
polls.urls module. Inmysite/urls.py , add an import for django.urls.include and insert aninclude() in the urlpatterns list, so you have:
The
include() function allows referencing other URLconfs.Whenever Django encounters include() , it chops off whateverpart of the URL matched up to that point and sends the remaining string to theincluded URLconf for further processing.
The idea behind
include() is to make it easy toplug-and-play URLs. Since polls are in their own URLconf(polls/urls.py ), they can be placed under “/polls/”, or under“/fun_polls/”, or under “/content/polls/”, or any other path root, and theapp will still work.
When to use
include()
You should always use
include() when you include other URL patterns.admin.site.urls is the only exception to this. Spotify app on amazon fire tablet.
You have now wired an
index view into the URLconf. Verify it’s working withthe following command:
Start Django App
Go to http://localhost:8000/polls/ in your browser, and you should see thetext “Hello, world. You’re at the polls index.”, which you defined in the
index view.
Page not found?
If you get an error page here, check that you’re going tohttp://localhost:8000/polls/ and not http://localhost:8000/.
The
path() function is passed four arguments, two required:route and view , and two optional: kwargs , and name .At this point, it’s worth reviewing what these arguments are for.
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