ActionView::Helpers::OutputSafetyHelper
Methods
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Instance Public methods
raw(stringish)

This method outputs without escaping a string. Since escaping tags is now default, this can be used when you don't want Rails to automatically escape tags. This is not recommended if the data is coming from the user's input.

For example:

raw @user.name
# => 'Jimmy <alert>Tables</alert>'

Source: show | on GitHub 

# File actionview/lib/action_view/helpers/output_safety_helper.rb, line 16
def raw(stringish)
  stringish.to_s.html_safe
end
safe_join(array, sep = $,)

This method returns an HTML safe string similar to what Array#join would return. The array is flattened, and all items, including the supplied separator, are HTML escaped unless they are HTML safe, and the returned string is marked as HTML safe.

safe_join([raw("<p>foo</p>"), "<p>bar</p>"], "<br />")
# => "<p>foo</p>&lt;br /&gt;&lt;p&gt;bar&lt;/p&gt;"

safe_join([raw("<p>foo</p>"), raw("<p>bar</p>")], raw("<br />"))
# => "<p>foo</p><br /><p>bar</p>"

Source: show | on GitHub 

# File actionview/lib/action_view/helpers/output_safety_helper.rb, line 31
def safe_join(array, sep = $,)
  sep = ERB::Util.unwrapped_html_escape(sep)

  array.flatten.map! { |i| ERB::Util.unwrapped_html_escape(i) }.join(sep).html_safe
end
to_sentence(array, options = {})

Converts the array to a comma-separated sentence where the last element is joined by the connector word. This is the html_safe-aware version of ActiveSupport's Array#to_sentence.

Source: show | on GitHub 

# File actionview/lib/action_view/helpers/output_safety_helper.rb, line 41
def to_sentence(array, options = {})
  options.assert_valid_keys(:words_connector, :two_words_connector, :last_word_connector, :locale)

  default_connectors = {
    words_connector: ", ",
    two_words_connector: " and ",
    last_word_connector: ", and "
  }
  if defined?(I18n)
    i18n_connectors = I18n.translate(:'support.array', locale: options[:locale], default: {})
    default_connectors.merge!(i18n_connectors)
  end
  options = default_connectors.merge!(options)

  case array.length
  when 0
    "".html_safe
  when 1
    ERB::Util.html_escape(array[0])
  when 2
    safe_join([array[0], array[1]], options[:two_words_connector])
  else
    safe_join([safe_join(array[0...-1], options[:words_connector]), options[:last_word_connector], array[-1]], nil)
  end
end