Rails - Nov 2005 - Why class InstanceTag is defined at 4 different places in Rails

In Rails, the class InstanceTag is defined at 4 places:

active_record_helper.rb
date_helper.rb
form_helper.rb
form_options_helper.rb


I have a need to overrite the
def to_date_select_tag(options = {})
method of class InstanceTag defined in date_helper.rb . With little
background in Ruby I am finding it difficult to achieve overwriting a method
in an elegant way.

Is it a good design practice to have such big classes inside a module? Or
this constraint has been put by the language or framework? I''m trying
to
understand the design rationale.

Thanks.
-=- Neeraj


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