我的照片模型有一个标题属性。我不希望用户添加诸如...图片、打印、照片、图像、照片、图片之类的词
我有这个验证，但在尝试创建/更新标题时似乎没有得到它
验证:title, exclude: { inside: %w(picture, Print, photo, image, photo, pic),
我也用 :in 试过了
验证 :title, exclude: { in: %w(picture, Print, photo, image, photo, pic)
关于为什么将像“芝加哥天际线照片”这样的标题保存到数据库的任何想法？
【问题讨论】：
标签： ruby-on-rails ruby-on-rails-4
排除将捕获“照片”，但不会捕获“天际线照片”或“芝加哥天际线照片”......它仅检查整个属性。
使用自定义验证会更好。
validate :reject_if_includes_image_words
def reject_if_includes_image_words
title.split(' ').each do |word|
if %w(picture print photo image photograph pic).include? word.downcase
errors.add(:title, "can't include the word '#{word}'")
break
end
end
end
编辑
处理标点或数字的情况并包含@pdobb的出色建议...
IMAGE_WORDS = %w(picture print photo image photograph pic)
validate :reject_if_includes_image_words
def reject_if_includes_image_words
used_image_words = title.gsub(/[^A-Za-z\s]/,'').split & IMAGE_WORDS
errors.add(:title, "can't use '#{used_image_words.join('\', \'')}'") if used_image_words.any?
end
【讨论】：
invalid_words = %w(picture print photo image photograph pic) & "asdf picture and pic".split 然后errors.add(:title, "can't include the word(s): #{invalid_words.join(', ')}") if invalid_words.any?。将图像单词列表移动到常量中也是理想的。