ruby-on-railsredcarpet

Wrong number of arguments (0 for 1) using Redcarpet Gem

I'm trying to use the Redcarpet gem to render markdown on my app and am getting the error wrong number of arguments (0 for 1) on my erb page where I call the render:

<p><%= markdown.render(@wiki.body) %></p>

Here's my application_helper:

module ApplicationHelper
  def markdown(text)
    markdown = Redcarpet::Markdown.new(Redcarpet::Render::HTML, autolink: true, tables: true)
  end
end

Can anyone see where I'm going wrong? I've read a bunch of SO posts on this, but I'm new to this gem.

Solution

  • Your helper should look more like this:

    module ApplicationHelper
  def markdown(text)
    md = Redcarpet::Markdown.new(Redcarpet::Render::HTML, autolink: true, tables: true)
    md.render(text)
  end
end

    and called like so:

    <p><%= markdown(@wiki.body) %></p>