CGI escape, unescape, escapeHTML, unescapeHTML

admin — Thu, 21 May 2009 14:19:33 +0000

I just can’t seem to remember which to use when so here are the 4 great helpers when working with URLs and HTML:

When constructing URLs, you use escape and unescape:

url = "http://site.com/?address=" + CGI.escape("123 Main St, City, ST, 99999")
# url: http://example.com/?address=123+Main+St%2C+City%2C+ST%2C+99999

unescape does the reverse.

When rendering text inside HTML page, you use escapeHTML and unescapeHTML:

raw_html = CGI::escapeHTML("

An example HTML to be displayed raw on an HTML page

") #raw_html: <div>An example HTML to be displayed raw on an HTML page</div>

unescapeHTML is for converting an html-escaped string back to proper HTML form.

Simple, but you often forget!

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