ActiveRecord Attribute Normalization (Rails Plugin)
I like to keep my Active Record models as strict as possible. There are few things more enoying to me then having to deal with bad legacy data when a simple change to a database column to not allow NULL values or adding validation in a model to disalow ’’ could have saved hours of data massaging.
Enter the attribute_normalizer rails plugin
class Klass < ActiveRecord::Base # Can take an array of attributes if you want normalize_attributes :first_name, :last_name end
object = Klass.new # Blank normalizes to nil object.first_name = '' object.first_name # => nil # Whitespace is also cleaned up object.last_name = "\tDeering\n" object.last_name # => 'Deering'
And for more bonus points then I can throw at it also accepts blocks!
class Klass < ActiveRecord::Base normalize_attributes :home_phone_number, :office_phone_number_ do |value| return nil unless value.is_a?(String) value.gsub(/\W/, '').gsub(/^1/, '') end normalize_attributes :postal_code do |value| value.upcase.gsub(/\W/,'') end end
object = Klass.new # Your given block will be executed to normalize object.home_phone_number = '+1 (555) 123.4567' object.home_phone_number # => '5551234567' # Normalization happens before any validations. # This will surely help avoid a lot of regex within validates_format_of object.postal_code = 't6m 2x2' object.postal_code # => 'T6M2X2'
This has become standard on every one of my rails projects. I hope you can find a use for it also. I have some backend Ruby work coming up so I should get around to making this a gem soon.