camelize(lower_case_and_underscored_word, first_letter_in_uppercase = true) public

By default, camelize converts strings to UpperCamelCase. If the argument to camelize is set to :lower then camelize produces lowerCamelCase.

camelize will also convert ‘/’ to ‘::’ which is useful for converting paths to namespaces.


"active_record".camelize                # => "ActiveRecord"
"active_record".camelize(:lower)        # => "activeRecord"
"active_record/errors".camelize         # => "ActiveRecord::Errors"
"active_record/errors".camelize(:lower) # => "activeRecord::Errors"

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

"SSLError".underscore.camelize # => "SslError"
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January 20, 2010
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