如果 URL 不存在，则将 http(s) 添加到 URL? [英] Add http(s) to URL if it's not there?

问题描述

我在我的模型中使用这个正则表达式来验证用户提交的 URL.我不想强迫用户输入 http 部分，但如果它不存在，我想自己添加它.

I'm using this regex in my model to validate an URL submitted by the user. I don't want to force the user to type the http part, but would like to add it myself if it's not there.

validates :url, :format => { :with => /^((http|https):\/\/)?[a-z0-9]+([-.]{1}[a-z0-9]+).[a-z]{2,5}(:[0-9]{1,5})?(\/.)?$/ix, :message => " is not valid" }

知道我怎么做吗?我对验证和正则表达式的经验很少..

Any idea how I could do that? I have very little experience with validation and regex..

推荐答案

如果它不存在，请使用 before 过滤器添加它:

Use a before filter to add it if it is not there:

before_validation :smart_add_url_protocol

protected

def smart_add_url_protocol
  unless url[/\Ahttp:\/\//] || url[/\Ahttps:\/\//]
    self.url = "http://#{url}"
  end
end

留下你的验证，这样如果他们打错了他们可以纠正协议.

Leave the validation you have in, that way if they make a typo they can correct the protocol.

这篇关于如果 URL 不存在，则将 http(s) 添加到 URL?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！