Method: ActiveSupport::Inflector#parameterize

Defined in:
lib/active_support/inflector/transliterate.rb

#parameterize(string, sep = '-') ⇒ Object

Replaces special characters in a string so that it may be used as part of a ‘pretty’ URL.

Examples

class Person
  def to_param
    "#{id}-#{name.parameterize}"
  end
end

@person = Person.find(1)
# => #<Person id: 1, name: "Donald E. Knuth">

<%= link_to(@person.name, person_path(@person)) %>
# => <a href="/person/1-donald-e-knuth">Donald E. Knuth</a>



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# File 'lib/active_support/inflector/transliterate.rb', line 82

def parameterize(string, sep = '-')
  # replace accented chars with their ascii equivalents
  parameterized_string = transliterate(string)
  # Turn unwanted chars into the separator
  parameterized_string.gsub!(/[^a-z0-9\-_]+/i, sep)
  unless sep.nil? || sep.empty?
    re_sep = Regexp.escape(sep)
    # No more than one of the separator in a row.
    parameterized_string.gsub!(/#{re_sep}{2,}/, sep)
    # Remove leading/trailing separator.
    parameterized_string.gsub!(/^#{re_sep}|#{re_sep}$/i, '')
  end
  parameterized_string.downcase
end