instance method `parameterize`

Ruby on Rails 5.2.8.1

Since v2.2.3

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

parameterize(string, separator: "-", preserve_case: false)

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

parameterize("Donald E. Knuth") # => "donald-e-knuth"
parameterize("^très|Jolie-- ")  # => "tres-jolie"

To use a custom separator, override the separator argument.

parameterize("Donald E. Knuth", separator: '_') # => "donald_e_knuth"
parameterize("^très|Jolie__ ", separator: '_')  # => "tres_jolie"

To preserve the case of the characters in a string, use the preserve_case argument.

parameterize("Donald E. Knuth", preserve_case: true) # => "Donald-E-Knuth"
parameterize("^très|Jolie-- ", preserve_case: true) # => "tres-Jolie"

It preserves dashes and underscores unless they are used as separators:

parameterize("^très|Jolie__ ")                 # => "tres-jolie__"
parameterize("^très|Jolie-- ", separator: "_") # => "tres_jolie--"
parameterize("^très_Jolie-- ", separator: ".") # => "tres_jolie--"

Parameters

string req
separator key = "-"
preserve_case key = false

Source

# File activesupport/lib/active_support/inflector/transliterate.rb, line 92
    def parameterize(string, separator: "-", preserve_case: false)
      # Replace accented chars with their ASCII equivalents.
      parameterized_string = transliterate(string)

      # Turn unwanted chars into the separator.
      parameterized_string.gsub!(/[^a-z0-9\-_]+/i, separator)

      unless separator.nil? || separator.empty?
        if separator == "-".freeze
          re_duplicate_separator        = /-{2,}/
          re_leading_trailing_separator = /^-|-$/i
        else
          re_sep = Regexp.escape(separator)
          re_duplicate_separator        = /#{re_sep}{2,}/
          re_leading_trailing_separator = /^#{re_sep}|#{re_sep}$/i
        end
        # No more than one of the separator in a row.
        parameterized_string.gsub!(re_duplicate_separator, separator)
        # Remove leading/trailing separator.
        parameterized_string.gsub!(re_leading_trailing_separator, "".freeze)
      end

      parameterized_string.downcase! unless preserve_case
      parameterized_string
    end

Defined in activesupport/lib/active_support/inflector/transliterate.rb line 92 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveSupport::Inflector

Signature

Parameters