method

truncate

v5.2.3 - Show latest stable - Class: String

truncate(truncate_at, options = {})

public

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)"

# 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

1Note

Examples out of order

victorgrey · Aug 4, 20111 thank

The second and third examples should exchange places to fit with their explanations.

truncate

1Note

Examples out of order

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