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URL.html
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URL.html
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[%#
# IMPORTANT NOTE
# This documentation is generated automatically from source
# templates. Any changes you make here may be lost.
#
# The 'docsrc' documentation source bundle is available for download
# from http://www.template-toolkit.org/docs.html and contains all
# the source templates, XML files, scripts, etc., from which the
# documentation for the Template Toolkit is built.
-%]
[% META book = 'Modules'
page = 'Plugin_URL'
%]
[% WRAPPER toc;
INCLUDE tocitem
title = 'SYNOPSIS';
INCLUDE tocitem
title = 'DESCRIPTION';
INCLUDE tocitem
title = 'AUTHOR';
INCLUDE tocitem
title = 'VERSION';
INCLUDE tocitem
title = 'COPYRIGHT';
INCLUDE tocitem
title = 'SEE ALSO';
END
%]
<!-- Pod to HTML conversion by the Template Toolkit version 2 -->
[% WRAPPER section
title='SYNOPSIS'
-%]<pre> [% tt_start_tag %] USE url('/cgi-bin/foo.pl') [% tt_end_tag %]</pre>
<pre> [% tt_start_tag %] url(debug = 1, id = 123) [% tt_end_tag %]
# ==> /cgi/bin/foo.pl?debug=1&amp;id=123</pre>
<pre> [% tt_start_tag %] USE mycgi = url('/cgi-bin/bar.pl', mode='browse', debug=1) [% tt_end_tag %]</pre>
<pre> [% tt_start_tag %] mycgi [% tt_end_tag %]
# ==> /cgi/bin/bar.pl?mode=browse&amp;debug=1</pre>
<pre> [% tt_start_tag %] mycgi(mode='submit') [% tt_end_tag %]
# ==> /cgi/bin/bar.pl?mode=submit&amp;debug=1</pre>
<pre> [% tt_start_tag %] mycgi(debug='d2 p0', id='D4-2k[4]') [% tt_end_tag %]
# ==> /cgi-bin/bar.pl?mode=browse&amp;debug=d2%20p0&amp;id=D4-2k%5B4%5D</pre>
[%- END %]
[% WRAPPER section
title='DESCRIPTION'
-%]<p>
The URL plugin can be used to construct complex URLs from a base stem
and a hash array of additional query parameters.
</p>
<p>
The constructor should be passed a base URL and optionally, a hash array
reference of default parameters and values. Used from with a Template
Documents, this would look something like the following:
</p>
<pre> [% tt_start_tag %] USE url('http://www.somewhere.com/cgi-bin/foo.pl') [% tt_end_tag %]
[% tt_start_tag %] USE url('/cgi-bin/bar.pl', mode='browse') [% tt_end_tag %]
[% tt_start_tag %] USE url('/cgi-bin/baz.pl', mode='browse', debug=1) [% tt_end_tag %]</pre>
<p>
When the plugin is then called without any arguments, the default base
and parameters are returned as a formatted query string.
</p>
<pre> [% tt_start_tag %] url [% tt_end_tag %]</pre>
<p>
For the above three examples, these will produce the following outputs:
</p>
<pre> http://www.somewhere.com/cgi-bin/foo.pl
/cgi-bin/bar.pl?mode=browse
/cgi-bin/baz.pl?mode=browse&amp;debug=1</pre>
<p>
Additional parameters may be also be specified:
</p>
<pre> [% tt_start_tag %] url(mode='submit', id='wiz') [% tt_end_tag %]</pre>
<p>
Which, for the same three examples, produces:
</p>
<pre> http://www.somewhere.com/cgi-bin/foo.pl?mode=submit&amp;id=wiz
/cgi-bin/bar.pl?mode=browse&amp;id=wiz
/cgi-bin/baz.pl?mode=browse&amp;debug=1&amp;id=wiz</pre>
<p>
A new base URL may also be specified as the first option:
</p>
<pre> [% tt_start_tag %] url('/cgi-bin/waz.pl', test=1) [% tt_end_tag %]</pre>
<p>
producing
</p>
<pre> /cgi-bin/waz.pl?test=1
/cgi-bin/waz.pl?mode=browse&amp;test=1
/cgi-bin/waz.pl?mode=browse&amp;debug=1&amp;test=1</pre>
<p>
The ordering of the parameters is non-deterministic due to fact that
Perl's hashes themselves are unordered. This isn't a problem as the
ordering of CGI parameters is insignificant (to the best of my knowledge).
All values will be properly escaped thanks to some code borrowed from
Lincoln Stein's CGI.pm. e.g.
</p>
<pre> [% tt_start_tag %] USE url('/cgi-bin/woz.pl') [% tt_end_tag %]
[% tt_start_tag %] url(name="Elrich von Benjy d'Weiro") [% tt_end_tag %]</pre>
<p>
Here the spaces and "'" character are escaped in the output:
</p>
<pre> /cgi-bin/woz.pl?name=Elrich%20von%20Benjy%20d%27Weiro</pre>
<p>
Alternate name may be provided for the plugin at construction time
as per regular Template Toolkit syntax.
</p>
<pre> [% tt_start_tag %] USE mycgi = url('cgi-bin/min.pl') [% tt_end_tag %]</pre>
<pre> [% tt_start_tag %] mycgi(debug=1) [% tt_end_tag %]</pre>
<p>
Note that in the following line, additional parameters are seperated
by '&amp;', while common usage on the Web is to just use '&'. '&amp;'
is actually the Right Way to do it. See this URL for more information:
http://ppewww.ph.gla.ac.uk/~flavell/www/formgetbyurl.html
</p>
<pre> /cgi-bin/waz.pl?mode=browse&amp;debug=1&amp;test=1</pre>
[%- END %]
[% WRAPPER section
title='AUTHOR'
-%]<p>
Andy Wardley <abw@kfs.org>
</p>
<p>
[% ttlink('http://www.andywardley.com/', 'http://www.andywardley.com/') -%]
</p>
[%- END %]
[% WRAPPER section
title='VERSION'
-%]<p>
2.31, distributed as part of the
Template Toolkit version 2.06, released on 07 November 2001.
</p>
[%- END %]
[% WRAPPER section
title='COPYRIGHT'
-%]<pre> Copyright (C) 1996-2001 Andy Wardley. All Rights Reserved.
Copyright (C) 1998-2001 Canon Research Centre Europe Ltd.</pre>
<p>
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
</p>
[%- END %]
[% WRAPPER section
title='SEE ALSO'
-%]<p>
[% ttlink('Template::Plugin', 'Template::Plugin') -%]
</p>
[%- END %]