Catalyst::Plugin::Params::Nested - Nested form parameters (ala Ruby on Rails).
use Catalyst qw/Params::Nested/;
# using this html
<form ...>
<!-- can be with either subscripted or dot notation -->
<input name="foo[bar]" ... />
<input name="foo.gorch" ... />
</form>
# turns params into hashrefs:
$c->req->param('foo')->{bar};
$c->req->params({
# extra params
foo => {
bar => ...,
gorch => ...
},
# original params untouched
'foo[bar]' => ...,
'foo.gorch' => ...,
});
Ruby on Rails has a nice feature to create nested parameters that help with the organization of data in a form - parameters can be an arbitrarily deep nested structure.
The way this structure is denoted is that when you construct a form the field names have a special syntax which is parsed.
This plugin supports two syntaxes:
<input name="foo.bar.gorch" />
<input name="foo[bar][gorch]" />
When reading query parameters from $c->req you can now access the all the items starting with "foo" as one entity using $c->req->param('foo');. Each subitem, denoted by either the dot or the square brackets, will be returned as a further deeper hashref.
Overrides "prepare_parameters" in Catalyst to expand the parameter data structure post factum.
No attempt is made to merge data intelligently. If you do this:
<input name="foo" />
<input name="foo.bar" />
the foo parameter will stay untouched, and you'll have to access foo.bar using its full string name:
$c->req->param("foo.bar");
Yuval Kogman, nothingmuch@woobling.org
Jess Robinson
Copyright (c) 2005 the aforementioned authors. All rights
reserved. This program is free software; you can redistribute
it and/or modify it under the same terms as Perl itself.
