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算用数字を漢数字にするメソッド

Last updated at Posted at 2021-11-12

英数字を漢数字に変換するメソッドの自作

例えば 2021年9月11日 にこのメソッドを使うと
ニ〇ニ一年九月一一日 になる

開発環境

ruby 2.6.5
Ruby on Rails 5.2.5

本題

ヘルパーメソッド内に

  def convert_kansuji(text)
    text.tr('0123456789', '〇一二三四五六七八九')
  end

こんなふうに定義してやる

View の中で

convert_kansuji(@worship.worship_day.strftime("%Y年%m月%d日"))

こんなふうにしてやると変換される

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