Mini Curso de Django
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Welcome to the Django!
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Minicurso realizado no II Congresso Acadêmico do CESMAC - Maceió/AL
Transcript of Mini Curso de Django
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 WillisonBSD 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 CRUDForm handlingElegant URL DesignTemplate systemCache systemi18n
Principles (...or philosophies)
DRY (Don't Repeat Yourself )Loose coupling Write less code as possibleQuick developmentExplicit is better than implicit
...and the best, is
MVC? No... MTV!
MVC vs. MTV
Model --> ModelView --> TemplateController --> View
Overview
Go to the Project!
Download
djangoproject.com/download
InstallUnzip Django-x.x.tar.gzpython 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 adminfrom 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 adminadmin.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 easyDjango is funDjango scalesDjango is maintainableDjango saves small kittensIt rocks - USE IT!
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