module ActiveSupport::Inflector

singularize('leyes', :es) # => "ley"
singularize('CamelOctopi') # => "CamelOctopus"
singularize('word') # => "word"
singularize('sheep') # => "sheep"
singularize('octopi') # => "octopus"
singularize('posts') # => "post"

this parameter is set to :en.
singularized using rules defined for that language. By default,
If passed an optional +locale+ parameter, the word will be

string.
The reverse of #pluralize, returns the singular form of a word in a

def singularize(word, locale = :en)
  apply_inflections(word, inflections(locale).singulars, locale)
end