Is there a way to populate fields on a hidden input using Mechanize?

When I try to use the form to navigate to a different page, I realize that the input field is hidden.

Below is the HTML code for reference: 

<form id="form_pager" method="post" action="">
    <input type="hidden" id="txtPage" name="page">

                <a class="link-paginador" href="javascript:navigatePage('1');">&lt;&lt;</a>
                        <a class="link-paginador" href="javascript:navigatePage('1');">Previous</a>
            <span id="pager">


                                <a class="link-paginador" href="javascript:navigatePage('1');">1</a>&nbsp;
                                            <strong>2</strong>&nbsp;
                                            <a class="link-paginador" href="javascript:navigatePage('3');">3</a>&nbsp;
                                            <a class="link-paginador" href="javascript:navigatePage('4');">4</a>&nbsp;
                                            <a class="link-paginador" href="javascript:navigatePage('5');">5</a>&nbsp;

            </span>
                <a class="link-paginador" href="javascript:navigatePage('3');">Next</a>
                        <a class="link-paginador" href="javascript:navigatePage('5');">&gt;&gt;</a>
        </form>

My attempt to manipulate the input fields using the following code:

$form = $mech->form_id('form_pager');
$mech->set_fields('txtPage' => 'page='.$nbpage);
$mech->click();

I also tried changing the input status with this piece of code:

foreach my $forms ($mech->forms()) {
    map { $_->readonly(0) } $forms->inputs();
}

Unfortunately, none of these methods seem to work. Any suggestions or ideas would be greatly appreciated. Thank you!

javascriptformsperlwww-mechanize

Answer №1

Check out this resource here.

If you are facing issues, it could be because WWW::Mechanize does not support Javascript execution.

You may want to consider using WWW::Mechanize::Firefox, which can handle javascript, or alternatively, try WWW::Mechanize::PhantomJS

Important points to note when utilizing either of these modules:

  • WWW::Mechanize::Firefox relies on your installed Firefox for execution, hence ensuring you have Firefox installed is vital.
  • WWW::Mechanize::PhantomJS utilizes phantomjs. Ensure you have it installed to use WWW::Mechanize::PhantomJS.
  • WWW::Mechanize::PhantomJS operates without a screen interface, so viewing the page directly is not possible. To visualize the page, consider using the content_as_png method. More details about this can be found in the POD.

Simply incorporate javascript afterwards to modify the value.

Another issue could arise from the use of the set_fields function. 

# Unsure if this works correctly
$mech->set_fields('page' => $nbpage);

# from WWW::Mechanize::FAQ
# Disable warnings:
{
   local $^W = 0;
   $mech->field( page => $nbpage );
}

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