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Mini Curso Django Ii Congresso Academico Ces

Django is a Python web framework that encourages rapid development and clean design. It originated from the name of guitarist Django Reinhardt and was first released in 2005. Django emphasizes loose coupling, explicit configuration, and development speed. It uses the MTV pattern rather than MVC, with models, templates, and views instead of models, views, and controllers. The document then provides steps to create a Django project and blog application, including generating models, linking the app to the admin interface, setting up URLs and templates.

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Welcome to the Django!
What's Django? "Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design."   from http://www.djangoproject.com/   "...and not a CMS System."
Origins... Django Reinhardt
Origins... Lawrence-Journal World
Origins... Pycon 2005 - Adrian Holovaty e Simon Willison BSD License* Django Software Foundation - 2008 * http://en.wikipedia.org/wiki/BSD_licenses
www.djangoproject.com
Skills   Convention Over Configuration Object-Relational Mapping (ORM) Very useful admin CRUD Form handling Elegant URL Design Template system Cache system i18n      
Principles (...or philosophies)       DRY ( Don't Repeat Yourself ) Loose coupling Write less code as possible Quick development Explicit is better than implicit        
...and the best, is
MVC? No... MTV!
MVC vs. MTV       M odel --> M odel V iew --> T emplate C ontroller --> V iew
Overview
Go to the Project!
  Download djangoproject.com/download Install Unzip Django-x.x.tar.gz python setup.py install Or... apt-get install python-django (Debian like OS) Setting up...
Create a Project...       django-admin.py startproject my_project
Setup files   __init__.py - indicates a python package   manager.py - admin tasks   settings.py - project settings   urls.py - project urls map
Let's to do something... Open settings.py : DATABASE_ENGINE = 'sqlite3' DATABASE_NAME = 'myblog.db' add 'django.contrib.admin' Open urls.py : Uncomment the line: " from django.contrib... " Uncomment the line: " admin.autodiscover()... " Uncomment the line: " (r'^admin... "
Development server       python manager.py syncdb   python manager.py runserver [8000]
Others Servers... Development Server   Apache + Mod_Python   Apache + FastCGI
Create the app       python manage.py startapp my_blog
Setup files     init.py - indicates a python package   models.py - app domain model   views.py - project controller
App x Project     App - web app that do something. E.g. XXX Project - lot of apps and themselves settings. A project can be a lot of apps, and a app can stay in severals projects
Create the model       Open models.py and edit:     from django.db import models class Artigo(models.Model): titulo = models.CharField(max_length=100) conteudo = models.TextField() publicacao = models.DateTimeField()
Setting the model classes to admin Open admin.py and edit:       from django.contrib import admin from models import Artigo   admin.site.register(Artigo)
Add the app to the admin     Open settings.py and add: "my_project.blog" Re-sync the database Re-run the development server
Setting the urls   Open the urls.py and edit:   from django.conf.urls.defaults import * # Uncomment the next two lines to enable the admin: from django.contrib import admin admin.autodiscover() from my_blog.models import Artigo urlpatterns = patterns('', (r'^$', 'django.views.generic.date_based.archive_index', {'queryset': Artigo.objects.all(), 'date_field': 'publicacao'}), (r'^admin/(.*)', admin.site.root), )
Setting the templates   Create templates/blog/artigo_archive.html and edit:      <html><body> <h1>Meu blog</h1> {% for artigo in latest %} <h2>{{ artigo.titulo }}</h2> {{ artigo.conteudo }} {% endfor %} </body></html>
Look your app!       http://localhost:8000/
Recap...       Django is easy Django is fun Django scales Django is maintainable Django saves small kittens It rocks - USE IT! 
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