instance method `truncate`

Ruby on Rails 6.1.7.10

Since v3.0.20

Available in: 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:

truncate(truncate_at, options = {})

Truncates a given text after a given length if text is longer than length:

'Once upon a time in a world far far away'.truncate(27)
# => "Once upon a time in a wo..."

Pass a string or regexp :separator to truncate text at a natural break:

'Once upon a time in a world far far away'.truncate(27, separator: ' ')
# => "Once upon a time in a..."

'Once upon a time in a world far far away'.truncate(27, separator: /\s/)
# => "Once upon a time in a..."

The last characters will be replaced with the :omission string (defaults to “…”) for a total length not exceeding length:

'And they found that many people were sleeping better.'.truncate(25, omission: '... (continued)')
# => "And they f... (continued)"

Parameters

truncate_at req
options opt = {}

Source

# File activesupport/lib/active_support/core_ext/string/filters.rb, line 66
  def truncate(truncate_at, options = {})
    return dup unless length > truncate_at

    omission = options[:omission] || "..."
    length_with_room_for_omission = truncate_at - omission.length
    stop = \
      if options[:separator]
        rindex(options[:separator], length_with_room_for_omission) || length_with_room_for_omission
      else
        length_with_room_for_omission
      end

    +"#{self[0, stop]}#{omission}"
  end

Defined in activesupport/lib/active_support/core_ext/string/filters.rb line 66 · View on GitHub · Improve this page · Find usages on GitHub

Defined in String

Signature

Parameters