base.php File Reference

Go to the source code of this file.

Functions
	base ()
	Example showing how sections can be used to attach transformation and constraints on multiple fields at once. More...

Function Documentation

base()

base

(

)

Example showing how sections can be used to attach transformation and constraints on multiple fields at once.

Note that sections have a standard way of displaying constraint violations to the user.

Definition at line 7 of file base.php.

{
    //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.");
 
    //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);
 
    //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);
}

References $data, $DIC, $lng, and $result.