ruby-on-rails - 只显示前几段。Ruby on Rails

Question

我正在使用 simple_format(@company.description) 将文本制作成多个段落。在一页上，我只想展示前三段。是否有任何漂亮的 ruby​​ 方法可以在这里提供帮助，或者我应该阅读我的正则表达式技巧，这些技巧已经过时了。

干杯卡尔

Answer 1

truncate helper 方法需要一个可选的:separator. 由于 simple_format 使用<br />标签来指示段落，您应该能够执行以下操作：

truncate(simple_format(@company.description), length: 3, separator: '<br />')

Answer 2

Personally, I'd round the text before putting it into a formatter. I'd assume you have a \r\n or \n in your text. Why format 1000 paragraphs if all you need is the first 3.

def get_first_paragraphs(text, desired = 3)
   text.each_with_index do |character, index| 
      if(character == "\n")
         desiredParCount -= 1
         return text[0..index] if(desiredParCount <= 0)
      end
   end
   return text;
end

It's a function sure, but it's the fastest method.. if speed is important. (it always is, ALWAYS!) :)