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I'm trying to setup Rouge for my Rails app and I'm having issues with passing in inline ERB strings or blocks. When it reads ERB from a file it works fine however. Here is an example of what I have -

Works

rouge_helper.rb

def rouge(file, language)
  formatter = Rouge::Formatters::HTML.new(css_class: 'highlight', wrap: true)
  lexer     = Rouge::Lexer.find(language)
  output    = formatter.format(lexer.lex(file))

  output
end

app/views/example/_partial.html.erb

<p>hello <%= p "world" %></p>

app/views/example/index.html.erb

<pre class="highlight">
  <code>
    <%= raw rouge(File.read(Rails.root + "app/views/example/_partial.html.erb"), "erb") %>
  </code>
</pre>

Does not work

When I repleace the index.html.erb file with this - 

<pre class="highlight">
  <code>
    <%= raw rouge("<p>hello <%= p 'world' %></p>", "erb") %>
  </code>
</pre>

I get this error -

app/views/styleguide/index.html.erb:3: syntax error, unexpected '>' app/views/styleguide/index.html.erb:5: unknown regexp options - pr app/views/styleguide/index.html.erb:6: unterminated string meets end of file app/views/styleguide/index.html.erb:6: syntax error, unexpected end-of-input, expecting ')'

Desired Result

<p>hello <%= p "world" %></p>
Ryan Grush
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  • `rouge("<%= p 'world' %>", "erb")` should be `rouge(p('world'), "erb")` – PGill Oct 10 '18 at 21:24
  • @PGill I'm not trying print 'world', I'm trying to print an entire html.erb partial. I tweaked the question slightly so hopefully its more clear. – Ryan Grush Oct 10 '18 at 21:30

0 Answers0