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Ruby underscore and classify methods
These are two Rails helpers that could be very useful when injecting new instance methods in a class.
Converts from a class name to a underscore attribute.
‘MyClassName’.underscore => my_class_name
Inverse method from underscore.
Both, combined with singularize and pluralize, allows us to handle parent/child methods in a very handy way. For example:
elements_in_ = self.send(parent).send(self.class.to_s.pluralize.underscore)
or things like
Kernel.const_get(table_model.to_s.classify).find(:all) #Kernel.const_get gets an string and retrieves the class.