https://github.com/lightsofapollo/mappable_attributes

DSL to create aliases of keys in a hash
https://github.com/lightsofapollo/mappable_attributes

Last synced: 8 months ago
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DSL to create aliases of keys in a hash

• Host: GitHub
• URL: https://github.com/lightsofapollo/mappable_attributes
• Owner: lightsofapollo
• License: bsd-3-clause
• Created: 2011-07-26T00:47:32.000Z (almost 15 years ago)
• Default Branch: master
• Last Pushed: 2011-07-31T06:05:18.000Z (almost 15 years ago)
• Last Synced: 2024-12-27T15:12:43.976Z (over 1 year ago)
• Language: Ruby
• Homepage:
• Size: 117 KB
• Stars: 1
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

          
# What is MappableAttributes?

Often I find myself needing to rename the keys of one hash into another.

A trival example of this looks like:

    hash1 = {:werid_name => 'value'}

    hash2 = {:name => hash1[:werid_name]}

If you only need to rename one or two keys a simple approach like the

above is fine.

This library was designed for my need of renaming multiple

fields with extensability via blocks and by inherting from MappableAttributes::Base.

An example on a sudo Model.

    class SudoModel

      

      @@renamer = MappableAttributes::Base.new do

        

        map :output_name => :input_name

        map :another_name do |input|

          input[:input_name].downcase

        end

        # ....

      end

      def attributes

        {

          :input_name => 'FIRST LAST'

        }

      end

      def export_attributes

        @renamer.map_attributes(attributes)

        # =>

        # {

        #   :output_name => 'FIRST LAST',

        #   :another_name => 'first last'

        # }

      end

    end