FormWithFields.php

<?php

namespace WPDesk\Forms\Form;

use Psr\Container\ContainerInterface;
use WPDesk\Forms\ContainerForm;
use WPDesk\Forms\Field;
use WPDesk\Forms\FieldProvider;
use WPDesk\Forms\Form;
use WPDesk\Persistence\Adapter\ArrayContainer;
use WPDesk\Persistence\ElementNotExistsException;
use WPDesk\Persistence\PersistentContainer;
use WPDesk\View\Renderer\Renderer;

class FormWithFields implements Form, ContainerForm, FieldProvider {
	/**
	 * Unique form_id.
	 *
	 * @var string
	 */
	protected $form_id = 'form';
	/**
	 * Updated data.
	 *
	 * @var array
	 */
	private $updated_data;
	/**
	 * Form fields.
	 *
	 * @var Field[]
	 */
	private $fields;

	/**
	 * FormWithFields constructor.
	 *
	 * @param array $fields Form fields.
	 * @param string $form_id Unique form id.
	 */
	public function __construct( array $fields, $form_id = 'form' ) {
		$this->fields       = $fields;
		$this->form_id      = $form_id;
		$this->updated_data = null;
	}

	/**
	 * @inheritDoc
	 */
	public function is_submitted() {
		return null !== $this->updated_data;
	}

	/**
	 * @inheritDoc
	 */
	public function add_field( Field $field ) {
		$this->fields[] = $field;
	}

	/**
	 * @inheritDoc
	 */
	public function is_active() {
		return true;
	}

	/**
	 * Add more fields to form.
	 *