Module: L10n::ColumnTranslation::ClassMethods

Defined in:
lib/l10n/column_translation.rb

Instance Method Summary collapse

Instance Method Details

#column_language_code(name) ⇒ Object 



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# File 'lib/l10n/column_translation.rb', line 70

def column_language_code(name)
  name = name.to_s
  return I18n.default_language_code if translates?(name)
  if match = name.match(/_([a-z]{2})\z/) and I18n.translation_language_codes.map(&:to_s).include?(code = match.captures.first)
    code.to_sym
  end
end

#translate_column_name(column_name_t, language_code = nil) ⇒ Object 



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# File 'lib/l10n/column_translation.rb', line 78

def translate_column_name(column_name_t, language_code = nil)
  name = column_name_t.to_s
  if name.ends_with?('_t') and translates?(name[0..-3])
    "#{name[0..-3]}#{I18n.translation_suffix(language_code)}".to_sym
  else
    column_name_t
  end
end

#translated_column_name?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/l10n/column_translation.rb', line 66

def translated_column_name?(name)
  !!column_language_code(name)
end

#translates(*attrs) ⇒ Object 



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# File 'lib/l10n/column_translation.rb', line 11

def translates(*attrs)
  self.translated_attributes = (translated_attributes + attrs).map(&:to_sym).uniq
  
  definition_context = Proc.new do |attr_name|
    define_method "#{attr_name}_t" do
      read_attribute("#{attr_name}#{I18n.translation_suffix}")
    end
    define_method "#{attr_name}_t_with_fallback" do
      default_value = read_attribute(attr_name)
      if I18n.default?
        localized_value = default_value
      else
        localized_value = read_attribute("#{attr_name}_#{I18n.language_code}")
        localized_value = default_value if localized_value.blank?
      end
      localized_value
    end
    define_method "#{attr_name}_t=" do |value|
      write_attribute "#{attr_name}#{I18n.translation_suffix}", value
    end
    define_method "#{attr_name}_#{I18n.default_language_code}" do
      read_attribute attr_name
    end
    define_method "#{attr_name}_#{I18n.default_language_code}=" do |attr_value|
      write_attribute attr_name, attr_value
    end
    define_method "#{attr_name}_translations" do
      translations = { I18n.default_language_code => read_attribute(attr_name) }
      I18n.translation_language_codes.each do |language_code|
        translations[language_code] = read_attribute("#{attr_name}_#{language_code}")
      end
      translations
    end
    define_method "#{attr_name}_translations=" do |translations|
      translations = translations.dup
      if all = translations.delete(:all)
        send("#{attr_name}=", all)
        I18n.translation_language_codes.each do |language_code|
          method_name = "#{attr_name}_#{language_code}="
          send(method_name, all) if respond_to?(method_name)
        end
      end
      translations.each do |language_code, value|
        method_name = "#{attr_name}_#{language_code}="
        send(method_name, value) if respond_to?(method_name)
      end
    end
  end
  self.translated_attributes.each { |attr_name| definition_context.call attr_name }
end

#translates?(attr_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/l10n/column_translation.rb', line 62

def translates?(attr_name)
  translated_attributes.map(&:to_s).include?(attr_name.to_s)
end