MVC
Python
Model
View
Template
Explicit
Groovy
Java world & tools
Convention over configuration
Very similar to Ruby on Rails
Ruby
Convention over configuration
Well, more than the others
DB rules over model
Model
DB
DB
Migration
Rails
ActiveRecord
Controller
Django
Configure URLs to 
map view functions
Rails
app/controller/action
model -> controller
Explicitly import
Including models and 
basic django modules!
View
Django
less code execution
Grails
gsp file
Similar to jsp
Manual JavaScript
Rails
erb file
More code oriented
More tag oriented
Was called "Groovy on Rails"
, Oh My!
and
and
Jaime Buelta
less files and directories
Simple application
to compare them
Be able to "Shout" online
DB will store the shouts
Simple form to add a shout
Use only default frameworks
Rails
Django
Grails
Grails
action -> view
scatfold
JSON support on views
action -> view
Dynamic languages
Python
Explicit
Indentation
Batteries included
Ruby
Expressive
Cool
Functional
Engineer
Artist
Groovy
Higly influenced by Ruby
Businessman
Development workflow
Django model
Grails domain
Hibernate
Define models
Create/Sync DB
Define views
Create DB
Create migrations
Define controllers
Define domains
Create/Update DB
Scatfold controllers/views
of models 
Update controllers/views
Add other controllers
Add functionallity to models
python class
DB table
Manual DB table changes
Can define models from legacy DB,
  with problems
Create app
Define templates
Create project
Define domains from legacy DB is
really a challenge
groovy special class
Create project
Define views
Model will reflect all the 
columns in the DB
Change DB
Magic
Use of the basic frameworks, without add-ons
Documentation
and support
Bad documentation
Smaller community
One of the best documented
OSS projects
Tons of informal 
documentation
Conclussions
Strong personal opinions ahead!
I don't like
Bad documented
Dependent of XML-configured technologies
Java stack debug
It's great for CRUD interfaces!
Mystical errors
Bicycle
Be careful with your DB!
Good for Java business environments
XML is evil!
I like
Easy migrations
Motorbike
English-like language
Is this good?
Magic!
Exciting, but you don't want to have a problem
Chaotic community
Implicit
Expressive
Test-driven
I
Structured
Flexible
Modular
Difficult migrations
Great documentation
Small dir structure
MVT model
Configuration over convention
Sports car
you're going uphill lots of times
Cool!
You're in control all the time
Thanks for your attention!
Questions?
jaime@joltonline.com
Presentation available at prezil.com
Code available in www.wrongsideofmemphis.wordpress.com
painful, especially on production