method

underscore

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What's this?

underscore(camel_cased_word) public

The reverse of camelize. Makes an underscored, lowercase form from the expression in the string.

Changes ’::’ to ’/’ to convert namespaces to paths.

Examples:

  "ActiveRecord".underscore         # => "active_record"
  "ActiveRecord::Errors".underscore # => active_record/errors

Show source

# File activesupport/lib/active_support/inflector.rb, line 188
  def underscore(camel_cased_word)
    camel_cased_word.to_s.gsub(/::/, '/').
      gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
      gsub(/([a-z\d])([A-Z])/,'\1_\2').
      tr("-", "_").
      downcase
  end

September 24, 2009 - (>= v2.2.1)

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This method has been moved

This method has been moved to ActiveSupport::Inflector#underscore

underscore

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