在我的文本区域中显示降价 [英] displaying markdown in my textarea

问题描述

我正在使用BlueCloth根据用户输入的文本区域的内容从markdown创建html，如下所示:

I'm using BlueCloth to create html from markdown from the content my users enter into a textarea like this:

def create
  @post = Post.new(params[:post]) do |post|
    body = BlueCloth.new(post.body) 
    post.body = body.to_html
  end

...

end

这很好用！我可以很好地将html存储在数据库中，但是当用户进行编辑时，如何在文本区域中显示markdown?我试过了:

This works great! I get the html stored in the database fine, But how do I show markdown in the textarea when the user edits? I tried:

def edit
  @post = Post.find(params[:id])
  @post.body = BlueCloth.new(@post.body)
  @post.body.text
end

我的文本区域中的输出如下:

The output in my textarea looks like:

#<BlueCloth:0x10402d578>

推荐答案

Bluecloth的文档定义不明确.我不确定是否有转换html => markdown的简单方法.

Bluecloth's documentation isn't very well defined. I'm not sure there's an easy way to convert html => markdown.

但是，没有什么可以阻止您将markdown存储在数据库中，并根据需要将其转换为html.

However, there's nothing stopping you storing the markdown in your database, and convert it to html as necessary.

如果您希望html是@ post.body返回的默认值，那么您始终可以覆盖访问器.

If you want html to be the default returned by @post.body, then you could always override the accessor.

class Post < ActiveRecord::Base
  ...
  def body
    BlueCloth.new(@body).to_html
  end

  def markdown
    @body
  end
end

现在@ post.body返回markdown的html版本.而@ post.markdown返回markdown源.

Now @post.body returns the html version of the markdown. while @post.markdown returns the markdown source.

这篇关于在我的文本区域中显示降价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！