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This is a collection of links, examples and rants about Presenters/Decorators in Rails.
The "Decorator" pattern slowly started gaining popularity in Rails several years ago. It is not part of core Rails, and there's many different interpretations about how it should work in practice.
Jay Fields wrote about it in 2007 (before he switched back to Java and then Clojure): http://blog.jayfields.com/2007/03/rails-presenter-pattern.html
| # activerecord-3.0.0/lib/active_record/connection_adapters/mysql_adapter.rb | |
| # Maps logical Rails types to MySQL-specific data types. | |
| def type_to_sql(type, limit = nil, precision = nil, scale = nil) | |
| return super unless type.to_s == 'integer' | |
| case limit | |
| when 1; 'tinyint' | |
| when 2; 'smallint' | |
| when 3; 'mediumint' | |
| when nil, 4, 11; 'int(11)' # compatibility with MySQL default |
