Module: Vedeu::Coercions

Includes:
Common
Included in:
Colour, Style, Translator
Defined in:
lib/vedeu/support/coercions.rb

Overview

Provides means to convert attributes into the correct model.

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Common

#defined_value?, #to_sentence

Class Method Details

.included(receiver) ⇒ void

This method returns an undefined value.

Whenever this module Vedeu::Coercions is included in another class or module, make its methods into class methods, so they may be called directly.



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# File 'lib/vedeu/support/coercions.rb', line 54

def self.included(receiver)
  receiver.extend(self)
end

Instance Method Details

#coerce(value) ⇒ Object

Produces new objects of the correct class from the value, ignores objects that have already been coerced.



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# File 'lib/vedeu/support/coercions.rb', line 16

def coerce(value)
  if value.nil?
    new

  elsif value.is_a?(self)
    value

  else
    new(value)

  end
end

#coercer(values) ⇒ Array

Produces new objects of the correct class from attributes hashes, ignores objects that have already been coerced.



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# File 'lib/vedeu/support/coercions.rb', line 34

def coercer(values)
  return [] unless defined_value?(values)

  [values].flatten.map do |value|
    if value.is_a?(self)
      value

    else
      new(value)

    end
  end
end