To create elements, you access the appropriate method for that element type. Alternatively you can use the underlying add() or addElement(ElementInteface $element) methods.
<?php
$form = new Form();
$form->text('username');
$form->password('password');
$form->password('confirm_password');
$form->submit('submit_button', 'Click to Continue');Getting the element when you make it
<?php
$form = new Form();
$usernameElement = $form->text('username');Get the element at a later date
$form->text('username');
$usernameElement = $form->get('username');<?php
$form = new Form();
$form->text('username')
->attr('class', 'username-field')
->attr('id', 'username-field');<?php
$form = new Form();
$form->text('username')->setValue($userEntity->getUsername());Each element object has a __toString() method aliased to render() so you can just echo the objects to render them
Controller Code
<?php
$form = new Form();
// ... add elements
return $this->render('....', compact('form'));
?>Template Code
<div class="username-container">
<?= $form->getElement('username'); ?>
</div>When toArray() is called on your entity, you will have a data key for username which will match the name of the text field added named username.
<?php
$form = new Form();
$form->text('username');
$entity = new UserEntity($userHelper->getByID($userID));
$form->bind($entity->toArray());As long as your element imeple,ented ElementInteface then you can add it to the form.
<?php
$element = new CustomElement();
$element->setValue($someValue);
$element->attr('id', 'custom-element');
$form->addElement($element);An example of your custom element
<?php
use PPI\Form\Element\ElementInterface;
class CustomElement implements ElementInterface
{
protected $type = 'CustomElement';
// .. implement the methods in ElementInterface
}