Method: Jsapi::Meta::Existence.from

Defined in:
lib/jsapi/meta/existence.rb

.from(value) ⇒ Object

Transforms value to an instance of this class.

Raises an ArgumentError if value could not be transformed.



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# File 'lib/jsapi/meta/existence.rb', line 36

def self.from(value)
  return value if value.is_a?(Existence)

  case value
  when :present, true
    PRESENT
  when :allow_empty
    ALLOW_EMPTY
  when :allow_nil, :allow_null
    ALLOW_NIL
  when :allow_omitted, false, nil
    ALLOW_OMITTED
  else
    raise ArgumentError, "invalid existence: #{value}"
  end
end