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create personal web site create personal web site With it, you can manipulate forms, cookies, and the environment, maintain stateful sessions, and so on. It's documented in full in the reference section beginning on page 497, but we'll take a quick look at its capabilities here. Quoting When dealing with URLs and HTML code, you must be careful to quote certain characters. For instance, a slash character (``/'') has special meaning in a URL, so it must be ``escaped'' if it's not part of the path name. That is, any ``/'' in the query portion of the URL will be translated to the string ``%2F'' and must be translated back to a ``/'' for you to use it.

create personal web site Space and ampersand are also special characters. To handle this, CGI provides the routines CGI.escape and CGI.unescape: require 'cgi' puts CGI.escape( "Nicholas Payton/Trumpet & Flugel Horn" ) produces: Nicholas+Payton%2FTrumpet+%26+Flugel+Horn Similarly, you may want to escape HTML special characters: require 'cgi' puts CGI.

create personal web site escapeHTML( '<a href="/mp3">Click Here</a>' ) produces: &lt;a href=&quot;/mp3&quot;&gt;Click Here&lt;/a&gt; To get really fancy, you can decide to escape only certain elements within a string: require 'cgi' puts CGI.escapeElement('<hr><a href="/mp3">Click Here</a><br>','A') produces: <hr>&lt;a href=&quot;/mp3&quot;&gt;Click Here&lt;/a&gt;<br> Here only the ``A'' tag is escaped; other tags are left alone. Each of these methods has an ``un-'' version to restore the original string. Forms Using class CGI gives you access to HTML query parameters in two ways. Suppose we are given a URL of /cgi-bin/lookup?player=Miles%20Davis&year=1958.

create personal web site You can access the parameters ``player'' and ``year'' using CGI#[] directly: require 'cgi' cgi = CGI.new cgi['player'] ["Miles Davis"] cgi['year'] ["1958"] Or, you can retrieve all parameters as a Hash: require 'cgi' cgi = CGI.new h = cgi.params h['player'] ["Miles Davis"] Creating Forms and HTML CGI contains a huge number of methods used to create HTML---one method per tag. In order to enable these methods, you must create a CGI object by calling CGI.

create personal web site

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create personal web site