Re: www::mechanize question

Jason Roth wrote:

I'm using www::mechanize to submit a form to a website, and one of
the fields is disabled (and enabled by javascript on the page which
obviously isn't running). When I try to set a value for this field I
get a "no such field" error. How to I set a value for, and enable,
disabled form fields?

Hi Jason

WWW::Mechanize subclasses HTML::Form to handle the forms on a page. Ideally you
would add an input to one of these objects, but they're designed to be created
only from parsed HTML.

The best way I can suggest is to create a new HTML::Form object from a scrap of
HTML using the additional input field that the Javascript creates, find the
HTML::Form::Input object in that and add it to the form on the original page.
Fortunately an HTML::Form::Input object has an add_to_form method. Here's a
little subroutine that does just that

sub add_input {
my $form = shift;
my $html = shift;
my $newform = HTML::Form->parse("<form>$html</form>", 'http://void');
my ($input) = $newform->inputs;
$input->add_to_form($form);
}

and if you call it like the program below, hopefully you'll be able to add the
input field that you need. It abuses the OO interface a little but it's the best
I can come up with.

HTH,

Rob




use strict;
use warnings;

use WWW::Mechanize;

my $mech = WWW::Mechanize->new;

$mech->get('http://search.cpan.org');
my $form = $mech->form_number(1);

add_input($form, '<input type="text" name="newfield">');

$mech->field(newfield => 42);

$form->dump;




.

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