kracekumar/flask_vs_django.md

## flask_vs_django.md

      
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              flask_vs_django.md
            
          
    Flask Vs Django


Who am i ?


@Kracekumar
Have used both Flask and Django.


Introduction


Django is a web framework with batteries included like
ORM, Templating language, Authentication, Authorization, Migration etc ...
Flask is a micro framework which comes with routing and templating engine.


Today's discussion


Authentication
Internal/External service
Middleware
Beginner Friendly
Third party packages
Migrations/Command line tools
Testing
Misc
Final Words


Authentication


django.contrib.auth is django app which takes care of authentication.
User, Group, Permission model, decorators, login and logout signals etc ...
SQL backend and possible to use RemoteBackend. django.http.HttpRequest.META['REMOTE_USER]
Flask has no auth backend, third party modules like Flask-Principal.
Which is good ?


Internal/External Service


Django comes with lot of good security practices. Very good for public facing sites.
CSRF Token and Single Page Application.
Internal services don't need any security like CSRF Token.


Middleware


MIDDLEWARE_CLASSES in settings.py.
Django has middleware, every request/response goes through middleware.
Quite useful like logging API requests, tracking source etc ...
TEMPLATE_CONTEXT_PROCESSORS


Beginner Friendly


Django Regex are hard to remember and easy to do mistake.
Flask app.route('/articles/<int:year>/<int:month>/<int:day>/') and
Django(r'^articles/(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/$', views).
Flask heavily uses decorator Django encourages classes and functions.
Django's structure of project and app is standard across all Django project.


Third Party packages


Django has vast majority of well maintained third party apps.
Most of flask third party modules are broken and aren't well maintained.


Migration


Django 1.7 has in built migration tool (SQL only) and south.
SQLAlchemy has alembic for migration, flask-alembic isn't well maintained.


Management Commands


Django management commands are bliss to work.
Flask doesn't come with management commands, Flask-Script isn't great.
click cli library is popular.


Testing


Django comes with lot of Testing utilities like requestfactory, TestCase, LiveServerTestCase.
Third party modules like py.test-django, factoryboy .
Flask-testing, pytest-flask.


Misc


Jinja2 is faster than Django template. In future Django wants to use Jinja2 (No clear Roadmap).
SQLAlchemy has learning curve but very well designed.
Django REST Framework is well maintained in Python REST library.
Flask Admin is poorly maintained.


Final Word


Depending on purpose of web app choose the framework.
Flask is light weight and Django is full fledged framework.