method
underscore
v3.2.13 -
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- Class:
String
underscore()public
The reverse of camelize. Makes an underscored, lowercase form from the expression in the string.
underscore will also change ‘::’ to ‘/’ to convert namespaces to paths.
"ActiveModel".underscore # => "active_model" "ActiveModel::Errors".underscore # => "active_model/errors"