Draper - Visnupriya - spriteXchange

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Draper, decorator, view decorators, Rails 3, Rails 4,

Tecnologia

Draper
Decorators/View-Models for Rails Applications
Visnupriya. J .R
7th April 2014
@visnupriya90| github.com/visnupriya
© Spritle Software Private Limited | http://www.spritle.com

What is Draper?
• object-oriented layer of presentation
logic to your Rails application.
• The idea of Draper is to provide real ruby
class between the template and the
model.
• To decorate templates.
© Spritle Software Private Limited | http://www.spritle.com

Why use Draper?
• Clean up complex view logic
• Provides decorators which
bundles view logic in an object
oriented fashion
• Easy to test than helpers
• Code readability and easy to
maintain
• Code reuse
© Spritle Software Private Limited | http://www.spritle.com

What is Decorator Pattern?
• It is a design pattern.
• It allows behavior to be added to an
individual object, either statically or
dynamically, without affecting the behavior of
other objects from the same class
© Spritle Software Private Limited | http://www.spritle.com

Let’s see how to use?
• Add Draper to your Gemfile
• Generate decorator for a model as shown
below
• rails generate decorator Article
© Spritle Software Private Limited | http://www.spritle.com

SAMPLE CODE
Time to wakeup
© Spritle Software Private Limited | http://www.spritle.com

Questions?
Thank you
© Spritle Software Private Limited | http://www.spritle.com

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Draper - Visnupriya - spriteXchange

1. Draper Decorators/View-Models for Rails Applications Visnupriya. J .R 7th April 2014 @visnupriya90| github.com/visnupriya © Spritle Software Private Limited | http://www.spritle.com

2. What is Draper? • object-oriented layer of presentation logic to your Rails application. • The idea of Draper is to provide real ruby class between the template and the model. • To decorate templates. © Spritle Software Private Limited | http://www.spritle.com

3. Why use Draper? • Clean up complex view logic • Provides decorators which bundles view logic in an object oriented fashion • Easy to test than helpers • Code readability and easy to maintain • Code reuse © Spritle Software Private Limited | http://www.spritle.com

4. What is Decorator Pattern? • It is a design pattern. • It allows behavior to be added to an individual object, either statically or dynamically, without affecting the behavior of other objects from the same class © Spritle Software Private Limited | http://www.spritle.com

5. Let’s see how to use? • Add Draper to your Gemfile • Generate decorator for a model as shown below • rails generate decorator Article © Spritle Software Private Limited | http://www.spritle.com

Draper - Visnupriya - spriteXchange

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