Class: String

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

Overview

String class extension

A string that is supposed to becode a Module, Class or similar can be transformed by using #constantize

"Array".constantize
=> Array

When writing file names in ruby, they are usually an underscore (snakecase) representation of the class name. It can be transformed with #camelize and in place with #camelize!

"file_reader".camelize
=> "FileReader"

s = "file_reader"
s.camelize!
s
=> "FileReader"

The backwards transformation from a class name to snakecase is done with #underscore and in place with #underscore!

"FileReader".underscore
=> "file_reader"

s = "FileReader".underscore
s.underscore!
s
=> "file_reader"

Instance Method Summary collapse

Instance Method Details

#camelize ⇒ Object 



39
40
41
42
 
# File 'lib/redisabel/extensions/string.rb', line 39

def camelize
  return self.to_s.split(/_/).map(&:capitalize).join.
    split(/\//).map(&:capitalize).join('::')
end

#camelize! ⇒ Object 



44
45
46
 
# File 'lib/redisabel/extensions/string.rb', line 44

def camelize!
  self.replace(self.to_s.camelize)
end

#constantize ⇒ Object 



35
36
37
 
# File 'lib/redisabel/extensions/string.rb', line 35

def constantize
  return self.to_s.split('::').reduce(Module){ |m, c| m.const_get(c) }
end

#underscore ⇒ Object 



48
49
50
51
 
# File 'lib/redisabel/extensions/string.rb', line 48

def underscore
  return self.to_s.sub(/:+/, '/').split(/([A-Z]?[^A-Z]*)/).reject(&:empty?).
    map(&:downcase).join('_').gsub(/\/_/, '/')
end

#underscore! ⇒ Object 



53
54
55
 
# File 'lib/redisabel/extensions/string.rb', line 53

def underscore!
  self.replace(self.to_s.underscore)
end