Module: ToHash

Defined in:
lib/to_hash.rb

Overview

Generic ToHash mixin

Instance Method Summary collapse

Instance Method Details

#to_hash(*keys) ⇒ Object

to_hash generic implementation, generates a hash from object Mixing in this module from instance variables of the object

Example:

class Foo
  include ToHash
  def initialize
    @a = 1
    @b = 2
    @c = 3
  end
end

Foo.new.to_hash             #=> { :a => 1, :b => 2, :c => 3}
Foo.new.to_hash(:c, 'a')    #=> { 'a' => 1, :c => 3 }

Arguments:

*keys: (Optional key list)



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# File 'lib/to_hash.rb', line 21

def to_hash(*keys)
  keys = keys.any? ? __named_map(keys) : __instance_map
  keys = keys.map do |key, val|
    [key, instance_variable_get(val)]
  end
  Hash[keys]
end