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 208
    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

underscore

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