Module: SymbolicAttribute::Concern::ClassMethods

Defined in:
lib/symbolic_attribute/concern.rb

Instance Method Summary collapse

Instance Method Details

#symbolic_attribute(attr, opts = {}) ⇒ Object 



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# File 'lib/symbolic_attribute/concern.rb', line 16

def symbolic_attribute(attr, opts = {})

  # Getter method
  define_method attr do
    val = read_attribute(attr)
    val.to_sym unless val.blank?
  end

  # Add a class method and validation if :values option key is defined
  if opts.symbolize_keys!.key?(:values)
    class_attr_name = attr.to_s.pluralize
    class_attribute class_attr_name, :instance_reader => false, :instance_writer => false
    send "#{class_attr_name}=", opts.delete(:values).map(&:to_sym)
    validates attr, opts.merge(:inclusion => { :in => proc{|instance| instance.class.send(class_attr_name)} })

    define_singleton_method "human_#{attr}" do |val, options={}|
      options   = { :count => 1 }.merge!(options)

      defaults = lookup_ancestors.map do |klass|
        :"#{self.i18n_scope}.symbolic_attributes.#{klass.model_name.i18n_key}.#{attr}.#{val}"
      end

      defaults << options.delete(:default) if options[:default]
      defaults << val.to_s.humanize

      options[:default] = defaults
      I18n.translate(defaults.shift, options)
    end

    define_method  "human_#{attr}" do |options = {}|
      self.class.send "human_#{attr}", send(attr), options
    end

  end

end