标题大写 [英] Capitalizing titles

问题描述

我正在尝试编写一种将标题大写的方法.它应该不是每个单词都大写，如果你愿意的话，只应该大写.有时，它必须大写每个单词.也许我需要为小词添加一个例外.它是 Ruby 教程的一部分，我不能使用 Rails titleize 方法.这是我到目前为止所拥有的.如果你能帮忙，请告诉我.

I'm trying to write a method that will capitalize titles. It should capitalize not every word, but only the big words if you will. Sometimes, it has to capitalize every word. Maybe I need to add an exception for the little words. It's part of a Ruby tutorial, and I can't use the Rails titleize method. Here is what I have so far. Please let me know if you can help.

def titleize(name)
  name.split(" ").each {|word| word.capitalize!}.join (" ")
end

推荐答案

基于 Josh Voigts 评论:

Building off of Josh Voigts comment:

def titleize(name)
  lowercase_words = %w{a an the and but or for nor of}
  name.split.each_with_index.map{|x, index| lowercase_words.include?(x) && index > 0 ? x : x.capitalize }.join(" ")
end

您可能希望将 lowercase_words 设为常量并将其移出函数，因为它们永远不会改变.

You might want make lowercase_words a constant and move it out of the function since they won't ever change.

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