ruby on rails - Refactoring validation methods and callbacks -


i using ruby on rails 3.0.7 , have tree classes behavior same (and code in them model files). have name , description attribute, run same validation methods , both there before_save callback maintains data consistent providing same functions.

i refactor validation methods , callbacks in separated class\model (i think have locate them related files in \lib folder of application).

what have make that? code have add in classes , in refactoring class\model?

well, make super class 3 models inherit. tend put abstract base class in app/models alongside models themselves.

# app/models/thing.rb class thing < activerecord::base     # common code goes here, such     before_save ...     validates_length_of :foo end  # app/models/red_thing.rb class redthing < thing     # methods specific redthing go here end  # app/models/blue_thing.rb class bluething < thing     # methods specific bluething go here end

if things have many differences such doesn't make sense group them this, you'd want use module instead, bit more complicated.


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