disabled.php

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<?php
function disabled()
{
    //Step 0: Declare dependencies
    global $DIC;
    $ui = $DIC->ui()->factory();
    $lng = $DIC->language();
    $renderer = $DIC->ui()->renderer();
    $request = $DIC->http()->request();
    $data = new \ILIAS\Data\Factory();
    $refinery = new \ILIAS\Refinery\Factory($data, $lng);

    //Step 1: Implement transformation and constraints
    $sum = $refinery->custom()->transformation(function ($vs) {
        list($l, $r) = $vs;
        $s = $l + $r;
        return $s;
    });
    $equal_ten = $refinery->custom()->constraint(function ($v) {
        return $v == 10;
    }, "The sum must equal ten");

    //Step 2: Define inputs
    $number_input = $ui->input()->field()->numeric("number", "Put in a number.")->withValue(5);

    //Step 3: Define the group, add the inputs to the group and attach the
    //transformation and constraint
    $group = $ui->input()->field()->section(
        [ $number_input->withLabel("Left"), $number_input->withLabel("Right")],
        "Equals 10",
        "Left and Right must equal 10"
    )
        ->withAdditionalTransformation($sum)
        ->withAdditionalTransformation($equal_ten)
        ->withDisabled(true);

    //Step 3, define form and form actions, attach the group to the form
    $form = $ui->input()->container()->form()->standard('#', [$group]);

    //Step 4, implement some form data processing.
    if ($request->getMethod() == "POST") {
        $form = $form->withRequest($request);
        $result = $form->getData()[0];
    } else {
        $result = "No result yet.";
    }

    //Return the rendered form
    return
        "<pre>" . print_r($result, true) . "</pre><br/>" .
        $renderer->render($form);
}