Django is a free and open-source web framework written in Python and Based on the model-view-template architectural pattern. Django web framework is a set of components that help you to develop websites earlier and easier.
While building a website, you always need a similar set of components: a way to handle user authentication (signing up, signing in, signing out), a management panel for your website.
Fortunately, other people long ago noticed that the same problem is faced by developers while making a website, so they teamed up and created frameworks that give you ready-made components to use and Django is one of them.
Following points are specified by the Django Field Class type: –
Django can be broken into several components:
Features available in Django web framework are:
To start a project in Django, use the command $django-admin.py and then use the following command:Project
The session framework helps you in storing and retrieving arbitrary data on a per-site visitor basis. The data is stored on the server side and abstracts the receiving and sending of cookies. We can implement sessions through a piece of middleware.
Django-admin.py: It is a Django’s command line utility for administrative tasks.Manage.py: It is an automatically created file in each Django project. It is a thin wrapper around the Django-admin.py. It has the following usage:
Django closely follows the MVC (Model View Controller) design pattern, however, it does use its own logic in the implementation. Because the “C” is handled by the framework itself and most of the excitement in Django happens in models, templates, and views, Django is often referred to as an MTV framework. In the MTV development pattern:
Further reading https://djangobook.com/model-view-controller-design-pattern/
Django officially supports four database backends, they are
In addition to these, you can also use following 3rd parties
Installing using pip is the recommended way to install Django Framework. Below are the steps to install official release of Django with pip
Follow the below steps to Install the development version of Django Framework.
$ git clone https://github.com/django/django.git
$ pip install -e django/
You can think Django Migrations as version control system for your database/Model. It keeps track of changes done in your application Models/Table like adding a field, deleting a model, etc. Migrations in Django are stored as an on-disk format, referred to here as “migration files”. These files are actually just normal Python files with an agreed-upon object layout, written in a declarative style. A basic migration file looks like this:
from django.db import migrations, models class Migration(migrations.Migration): dependencies = [('migrations', '0001_initial')] operations = [ migrations.DeleteModel('Tribble'), migrations.AddField('Author', 'rating', models.IntegerField(default=0)), ]
Further Reading https://docs.djangoproject.com/en/2.0/topics/migrations/
In Django whenever a request is made by a user, it goes through the following steps:
A mixin is a special kind of multiple inheritances in Python. There are two main situations where mixins are used:
Read More from https://stackoverflow.com/questions/533631/what-is-a-mixin-and-why-are-they-useful
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