Class: String

Inherits:
Object
  • Object
show all
Defined in:
lib/extensions/string.rb

Overview

Copied from ActiveSupport so we don’t have to add ActiveSupport as a dependency just for this method.

Instance Method Summary collapse

Instance Method Details

#underscore ⇒ Object

Makes an underscored, lowercase form from the expression in the string.

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

'ActiveModel'.underscore         # => "active_model"
'ActiveModel::Errors'.underscore # => "active_model/errors"

As a rule of thumb you can think of underscore as the inverse of camelize, though there are cases where that does not hold:

'SSLError'.underscore.camelize # => "SslError"



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# File 'lib/extensions/string.rb', line 14

def underscore
  return self unless self =~ /[A-Z-]|::/
  word = self.to_s.gsub(/::/, '/')
  # word.gsub!(/(?:(?<=([A-Za-z\d]))|\b)(#{inflections.acronym_regex})(?=\b|[^a-z])/) { "#{$1 && '_'}#{$2.downcase}" }
  word.gsub!(/([A-Z\d]+)([A-Z][a-z])/, '\1_\2')
  word.gsub!(/([a-z\d])([A-Z])/, '\1_\2')
  word.tr!("-", "_")
  word.downcase!
  word
end