Problems using the RedCloth gem !?!

Rails
1

Hi there.

I have this line in my view:

<%= RedCloth.new(@news.long, [:filter_html,
:filter_styles]).to_html(:textile) %>

but it doesn’t filter out the html out, from this input:

h1. Header

some paragraph

BOOM

#This should be filtered away ?

other paragraph

What am i doing wrong ? it renderes the h1. and all hte paragraph fine,
but it doesn’t filter the <> type html tags.

  • Emil
2

I think it filters some HTML tags, but not normal and safe ones like

,

,

etc.

On Jan 21, 11:42 am, Emil K. [email protected]

3

Is there any way, that i can filter all html tags from the text, while
rendering it with the gem ?

  • Emil
4

If there is, I haven’t found it. I have though found a useful Regex
for
doing that. It’s a slightly modified version of the one used in Typo.
[No
source code will go scavenged!] I know I might catch some flack for
doing so
but I choose to add this method to the String class itself, as I use it
a
lot.

class String
def strip_html(leave_whitespace = false)
name = /[\w:_-]+/
value = /([A-Za-z0-9]+|(’[^’]?’|"[^"]?"))/
attr = /(#{name}(\s*=\s*#{value})?)/
rx =
/<[!/?[]?(#{name}|–)(\s+(#{attr}(\s+#{attr})))?\s([!/?]]+|–)?>/
(leave_whitespace) ? self.gsub(rx, “”).strip : self.gsub(rx,
“”).gsub(/\s+/, " ").strip
end
end

Be aware, though, that there is stil a lot of HTML entities left in the
Textilized string. [™, etc.] Depending on your end use, you may
need
to strip those entities as well. Let me know if you do need that because
I’ve written some really handy code for it, completely based on what
transformations RedCloth does. You know, only make the server work as
hard
as it has to.

RSL

5

In what circumstances would you want an h1 and not an h2? Sounds like
you’re
definitely going to need to Regex that one.

Anyhow, here’s the two additional methods [both on the String class as
before] for dealing with RedClothed HTML entities.

def strip_accents
self.gsub(/&([A-Za-z])(grave|acute|circ|tilde|uml|ring|lig|cedil);/,
‘\1’)
end

def convert_entities
dummy = self.dup
{
“#822[01]” => “”",
“#821[67]” => “’”,
“#8230” => “…”,
“#8211” => “-”,
“#8212” => “–”,
“#215” => “x”,
“gt” => “>”,
“lt” => “<”,
“(#8482|trade)” => “™”,
“(#174|reg)” => “®”,
“(#169|copy)” => “©”,
“(#38|amp)” => “&”,
“nbsp” => " “,
“cent” => " cent”,
“pound” => " pound",
}.each do |textiled, normal|
dummy.gsub!(/&#{textiled};/, normal)
end
dummy.gsub(/&[^;]+;/, “”)
end

6

I do need to remove ALL HTML enteties from the text, before rendering
it.

Is there any way to allow only some redcloth formatting to be
enterpreted ? such as not enterpreting lets say the h1. tag but accept
the h2. tag ?

  • Emil