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Modularizing Rails Apps with Cells

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Flavian Missi
Flavian Missi

Cells are a way to modularize and encapsulate logic in Rails applications. They allow extracting view rendering logic from controllers into reusable cells. Cells work similarly to controllers and support caching, rendering other cells, and inheriting views and logic from abstract cells. Models are not part of cells but cells can interact with models like controllers. Cells provide a way to better organize code and share logic across controllers.

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Modularizing Rails Apps With Cells Flavia Missi @flaviamissi
Installation $ gem install cells Gemfile gem 'cells'
group :test do gem " rspec-cells " end RSpec?
$ rails g cell tags display create app/cells/tags_cell.rb invoke erb create app/cells/tags/display.html.erb invoke rspec create spec/cells/tags_cell_spec.rb $ rails g cell CellName actionName Generator
Don't use erb? $ rails g cell Tags display -e haml
class TagsCell < Cell :: Rails def display render end end Generated code
What if I want to...
Cache class TagsCell < Cell :: Rails cache :display , :expires_in => 10 .minutes ...
It looks like a controller... And it is! Works exactly like one ;)
Views Suports rendering other cells Works like Rails default views Are located in app/cells/your_cell_name/ folder
<%= render_cell :tags , :display , :msg => &quot;Live long and prosper&quot; %> Rendering Cells
What about the Models? Models are not part of a cell Cells are able to interact with a
model just like a controller does
Inheritance Cells inheritance Views inheritance
app cells abstract_post/ index.html.erb

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Modularizing Rails Apps with Cells