Rails 3:如何正确显示"textarea"中的文本? [英] Rails 3: How to display properly text from "textarea"?

问题描述

在我的Rails 3应用程序中，我使用textarea允许用户在论坛中写一条新消息.

In my Rails 3 application I use textarea to let users to write a new message in a forum.

但是，显示消息时，所有换行符都看起来像空格(没有<br />).也许还有其他不匹配的例子，我还不知道.

However, when the message is displayed, all newlines look like spaces (there is no <br />). Maybe there are other mismatch examples, I don't know yet.

我想知道什么是最合适的处理方式.

I wonder what is the most appropriate way to deal with this.

我想存储在数据库中的文本是可以的(例如，我看到<转换为<)，所以主要的问题是显示.

I guess that the text that is stored in the database is OK (I see for example that < is converted to <), so the main problem is the presentation.

Rails中是否有内置的辅助方法?

Are there build-in helper methods in Rails for this ?

( simple_format 所做的事情看起来与我需要的类似，但是会添加<p>我不想出现的标签.)

(simple_format does something that looks similar to what I need, but it adds <p> tags which I don't want to appear.)

推荐答案

由于simple_format不能满足您的要求，因此，我将提供一个简单的帮助方法，将换行符转换为<br> s:

Since simple_format does not do what you want, I'd make a simple helper method to convert newlines to <br>s:

def nl2br(s)
  s.gsub(/\n/, '<br>')
end

然后在您的视图中可以像这样使用它:

Then in your view you can use it like this:

<%= nl2br(h(@forum_post.message)) %>

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