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#!/usr/bin/env ruby
require 'webapp'
require 'pathname'
Template = <<'End'
<html>
<head>
<title>query sample</title>
</head>
<body>
<form _attr_action="webapp.make_relative_uri">
Menu:
<select name=menu multiple>
<option selected>mizuyoukan</option>
<option>anmitsu</option>
<option>azukiyose</option>
</select>
<input type=hidden name=form_submitted value=yes>
<input type=submit>
</form>
<hr>
<p>
Since WebApp#validate_html_query validates a query
according to a given form,
impossible query such as <a _attr_href="webapp.make_relative_uri(:query=>{'menu'=>'kusaya'})">kusaya</a> is
ignored because WebApp#validate_html_query raises
WebApp::QueryValidationFailure exception.
</p>
<div _if="q">
<hr>
<table border=1>
<tr><th>name<th>value</tr>
<tr _iter="q.each//key,val">
<td _text=key>key<td _text=val>val</tr>
</table>
</div>
</body>
</html>
End
WebApp {|webapp|
begin
q = webapp.validate_html_query(Template)
rescue WebApp::QueryValidationFailure
q = nil
end
HTree.expand_template(webapp) {Template}
}
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