Contents

# NOTE: https://blog.daveallie.com/clean-monkey-patching/

require 'active_support/core_ext/hash'
require 'json'

module Ensurance
  module HashEnsure
    def self.prepended(base)
      base.singleton_class.prepend(ClassMethods)
    end

    module ClassMethods
      def ensure(thing)
        case thing.class.name
        when "Hash","HashWithIndifferentAccess"
          thing
        when "String"
          JSON.parse(thing)
        when "NilClass"
          nil
        when "ActionController::UnfilteredParameters", "ActionController::Parameters"
          thing.permit!.to_h
        else
          if thing.respond_to?(:to_h)
            begin
              thing.to_h
            rescue TypeError
              raise ArgumentError.new("Unhandled Type for Hash to ensure: #{thing.class}")
            end
          else
            raise ArgumentError.new("Unhandled Type for Hash to ensure: #{thing.class}")
          end
        end
      end

      def ensure!(thing)
        result = self.ensure(thing)
        raise ArgumentError, "Cannot Hash.ensure(#{thing})" unless result
        result
      end
    end
  end
end

::Hash.prepend( Ensurance::HashEnsure )

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
ensurance-0.1.11	lib/ensurance/hash_ensure.rb
ensurance-0.1.10	lib/ensurance/hash_ensure.rb
ensurance-0.1.9	lib/ensurance/hash_ensure.rb
ensurance-0.1.8	lib/ensurance/hash_ensure.rb
ensurance-0.1.7	lib/ensurance/hash_ensure.rb