在句子中截断句子？

Question

我有一个用来在Rails中截断字符串的助手，当我截断以句点结尾的句子时，它非常有用。 当句子以问号或感叹号结尾时，我该如何修改代码以截断句子？

def smart_truncate(s, opts = {})
    opts = {:words => 12}.merge(opts)
    if opts[:sentences]
      return s.split(/\.(\s|$)+/).reject{ |s| s.strip.empty? }[0, opts[:sentences]].map{|s| s.strip}.join('. ') + '...'
    end
    a = s.split(/\s/) # or /[ ]+/ to only split on spaces
    n = opts[:words]
    a[0...n].join(' ') + (a.size > n ? '... (more)' : '')
end

谢谢！！！

Answer 1

你有truncate方法

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

它将返回"Once upon a time in a..."

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而且，如果您需要按字数截断，则可以使用新引入的truncate_words （从Rails 4.2.2开始）

'And they found that many people were sleeping better.'.truncate_words(5, omission: '... (continued)')

哪个返回

"And they found that many... (continued)"