1Template::Plugin::URL(3U)ser Contributed Perl DocumentatiToenmplate::Plugin::URL(3)
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NAME

6       Template::Plugin::URL - Plugin to construct complex URLs
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SYNOPSIS

9           [% USE url('/cgi-bin/foo.pl') %]
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11           [% url(debug = 1, id = 123) %]
12              # ==> /cgi/bin/foo.pl?debug=1&id=123
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14           [% USE mycgi = url('/cgi-bin/bar.pl', mode='browse', debug=1) %]
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16           [% mycgi %]
17              # ==> /cgi/bin/bar.pl?mode=browse&debug=1
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19           [% mycgi(mode='submit') %]
20              # ==> /cgi/bin/bar.pl?mode=submit&debug=1
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22           [% mycgi(debug='d2 p0', id='D4-2k[4]') %]
23              # ==> /cgi-bin/bar.pl?mode=browse&debug=d2%20p0&id=D4-2k%5B4%5D
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DESCRIPTION

26       The "URL" plugin can be used to construct complex URLs from a base stem
27       and a hash array of additional query parameters.
28
29       The constructor should be passed a base URL and optionally, a hash
30       array reference of default parameters and values.  Used from with a
31       template, it would look something like the following:
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33           [% USE url('http://www.somewhere.com/cgi-bin/foo.pl') %]
34           [% USE url('/cgi-bin/bar.pl', mode='browse') %]
35           [% USE url('/cgi-bin/baz.pl', mode='browse', debug=1) %]
36
37       When the plugin is then called without any arguments, the default base
38       and parameters are returned as a formatted query string.
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40           [% url %]
41
42       For the above three examples, these will produce the following outputs:
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44           http://www.somewhere.com/cgi-bin/foo.pl
45           /cgi-bin/bar.pl?mode=browse
46           /cgi-bin/baz.pl?mode=browse&debug=1
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48       Note that additional parameters are separated by '"&"' rather than
49       simply '"&"'.  This is the correct behaviour for HTML pages but is,
50       unfortunately, incorrect when creating URLs that do not need to be
51       encoded safely for HTML.  This is likely to be corrected in a future
52       version of the plugin (most probably with TT3).  In the mean time, you
53       can set $Template::Plugin::URL::JOINT to "&" to get the correct
54       behaviour.
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56       Additional parameters may be also be specified to the URL:
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58           [% url(mode='submit', id='wiz') %]
59
60       Which, for the same three examples, produces:
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62           http://www.somewhere.com/cgi-bin/foo.pl?mode=submit&id=wiz
63           /cgi-bin/bar.pl?mode=browse&id=wiz
64           /cgi-bin/baz.pl?mode=browse&debug=1&id=wiz
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66       A new base URL may also be specified as the first option:
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68           [% url('/cgi-bin/waz.pl', test=1) %]
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70       producing
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72           /cgi-bin/waz.pl?test=1
73           /cgi-bin/waz.pl?mode=browse&test=1
74           /cgi-bin/waz.pl?mode=browse&debug=1&test=1
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76       The ordering of the parameters is non-deterministic due to fact that
77       Perl's hashes themselves are unordered.  This isn't a problem as the
78       ordering of CGI parameters is insignificant (to the best of my
79       knowledge).  All values will be properly escaped thanks to some code
80       borrowed from Lincoln Stein's "CGI" module.  e.g.
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82           [% USE url('/cgi-bin/woz.pl') %]
83           [% url(name="Elrich von Benjy d'Weiro") %]
84
85       Here the space and ""'"" single quote characters are escaped in the
86       output:
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88           /cgi-bin/woz.pl?name=Elrich%20von%20Benjy%20d%27Weiro
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90       An alternate name may be provided for the plugin at construction time
91       as per regular Template Toolkit syntax.
92
93           [% USE mycgi = url('cgi-bin/min.pl') %]
94           [% mycgi(debug=1) %]
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AUTHOR

97       Andy Wardley <abw@wardley.org> <http://wardley.org/>
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100       Copyright (C) 1996-2022 Andy Wardley.  All Rights Reserved.
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102       This module is free software; you can redistribute it and/or modify it
103       under the same terms as Perl itself.
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SEE ALSO

106       Template::Plugin
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110perl v5.38.0                      2023-07-21          Template::Plugin::URL(3)
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