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Is it possible to extend accessor methods to include validation routines?

How can one include validation routines to attr_write and attr_accessor?

2nd Jul 2017, 2:53 PM
William Moonga
William Moonga - avatar
1 ответ
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Yes, you can 'Monkey Patch' the attr_* methods and modify it's behavior, but that's not a good idea. ( google 'monkey patching in ruby' ) Instead, it's good to write custom getter and setters to serve your purpose Here's an example -------------------------------------------------------------------------------- class Person < ActiveRecord::Base # don't use attr_accessible here as it interferes/duplicates the methods below # setter def shirt=(value) write_attribute(:shirt_fee_in_cents, value) end # getter def shirt if self[:shirt].present? return self[:shirt] end AverageHuman.default_shirt end -------------------------------------------------------------------------------- Example taken from https://richardcooke.info/how-to-make-a-custom-getter-setter-for-activerecord-ruby-on-rails-attributesproperties/
2nd Jul 2017, 3:08 PM
Salekin
Salekin - avatar