511 lines
11 KiB
PHP
511 lines
11 KiB
PHP
<?php
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namespace Kirby\Form;
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use Closure;
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use Exception;
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use Kirby\Cms\App;
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use Kirby\Exception\InvalidArgumentException;
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use Kirby\Toolkit\A;
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use Kirby\Toolkit\Component;
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use Kirby\Toolkit\I18n;
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use Kirby\Toolkit\V;
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/**
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* Form Field object that takes a Vue component style
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* array of properties and methods and converts them
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* to a usable field option array for the API.
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*
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* @package Kirby Form
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* @author Bastian Allgeier <bastian@getkirby.com>
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* @link https://getkirby.com
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* @copyright Bastian Allgeier
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* @license https://opensource.org/licenses/MIT
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*/
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class Field extends Component
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{
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/**
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* An array of all found errors
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*/
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protected array|null $errors = null;
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/**
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* Parent collection with all fields of the current form
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*/
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protected Fields|null $formFields;
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/**
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* Registry for all component mixins
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*/
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public static array $mixins = [];
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/**
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* Registry for all component types
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*/
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public static array $types = [];
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/**
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* @throws \Kirby\Exception\InvalidArgumentException
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*/
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public function __construct(
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string $type,
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array $attrs = [],
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Fields|null $formFields = null
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) {
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if (isset(static::$types[$type]) === false) {
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throw new InvalidArgumentException([
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'key' => 'field.type.missing',
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'data' => ['name' => $attrs['name'] ?? '-', 'type' => $type]
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]);
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}
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if (isset($attrs['model']) === false) {
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throw new InvalidArgumentException('Field requires a model');
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}
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$this->formFields = $formFields;
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// use the type as fallback for the name
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$attrs['name'] ??= $type;
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$attrs['type'] = $type;
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parent::__construct($type, $attrs);
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}
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/**
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* Returns field api call
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*/
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public function api(): mixed
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{
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if (
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isset($this->options['api']) === true &&
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$this->options['api'] instanceof Closure
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) {
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return $this->options['api']->call($this);
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}
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return null;
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}
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/**
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* Returns field data
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*/
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public function data(bool $default = false): mixed
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{
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$save = $this->options['save'] ?? true;
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if ($default === true && $this->isEmpty($this->value)) {
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$value = $this->default();
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} else {
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$value = $this->value;
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}
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if ($save === false) {
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return null;
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}
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if ($save instanceof Closure) {
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return $save->call($this, $value);
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}
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return $value;
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}
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/**
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* Default props and computed of the field
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*/
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public static function defaults(): array
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{
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return [
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'props' => [
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/**
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* Optional text that will be shown after the input
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*/
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'after' => function ($after = null) {
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return I18n::translate($after, $after);
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},
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/**
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* Sets the focus on this field when the form loads. Only the first field with this label gets
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*/
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'autofocus' => function (bool $autofocus = null): bool {
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return $autofocus ?? false;
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},
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/**
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* Optional text that will be shown before the input
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*/
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'before' => function ($before = null) {
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return I18n::translate($before, $before);
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},
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/**
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* Default value for the field, which will be used when a page/file/user is created
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*/
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'default' => function ($default = null) {
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return $default;
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},
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/**
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* If `true`, the field is no longer editable and will not be saved
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*/
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'disabled' => function (bool $disabled = null): bool {
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return $disabled ?? false;
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},
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/**
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* Optional help text below the field
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*/
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'help' => function ($help = null) {
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return I18n::translate($help, $help);
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},
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/**
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* Optional icon that will be shown at the end of the field
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*/
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'icon' => function (string $icon = null) {
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return $icon;
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},
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/**
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* The field label can be set as string or associative array with translations
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*/
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'label' => function ($label = null) {
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return I18n::translate($label, $label);
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},
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/**
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* Optional placeholder value that will be shown when the field is empty
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*/
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'placeholder' => function ($placeholder = null) {
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return I18n::translate($placeholder, $placeholder);
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},
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/**
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* If `true`, the field has to be filled in correctly to be saved.
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*/
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'required' => function (bool $required = null): bool {
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return $required ?? false;
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},
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/**
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* If `false`, the field will be disabled in non-default languages and cannot be translated. This is only relevant in multi-language setups.
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*/
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'translate' => function (bool $translate = true): bool {
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return $translate;
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},
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/**
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* Conditions when the field will be shown (since 3.1.0)
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*/
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'when' => function ($when = null) {
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return $when;
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},
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/**
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* The width of the field in the field grid. Available widths: `1/1`, `1/2`, `1/3`, `1/4`, `2/3`, `3/4`
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*/
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'width' => function (string $width = '1/1') {
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return $width;
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},
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'value' => function ($value = null) {
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return $value;
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}
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],
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'computed' => [
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'after' => function () {
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/** @var \Kirby\Form\Field $this */
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if ($this->after !== null) {
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return $this->model()->toString($this->after);
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}
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},
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'before' => function () {
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/** @var \Kirby\Form\Field $this */
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if ($this->before !== null) {
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return $this->model()->toString($this->before);
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}
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},
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'default' => function () {
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/** @var \Kirby\Form\Field $this */
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if ($this->default === null) {
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return;
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}
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if (is_string($this->default) === false) {
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return $this->default;
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}
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return $this->model()->toString($this->default);
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},
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'help' => function () {
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/** @var \Kirby\Form\Field $this */
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if ($this->help) {
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$help = $this->model()->toSafeString($this->help);
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$help = $this->kirby()->kirbytext($help);
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return $help;
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}
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},
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'label' => function () {
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/** @var \Kirby\Form\Field $this */
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if ($this->label !== null) {
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return $this->model()->toString($this->label);
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}
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},
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'placeholder' => function () {
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/** @var \Kirby\Form\Field $this */
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if ($this->placeholder !== null) {
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return $this->model()->toString($this->placeholder);
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}
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}
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]
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];
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}
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/**
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* Returns optional dialog routes for the field
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*/
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public function dialogs(): array
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{
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if (
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isset($this->options['dialogs']) === true &&
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$this->options['dialogs'] instanceof Closure
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) {
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return $this->options['dialogs']->call($this);
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}
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return [];
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}
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/**
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* Returns optional drawer routes for the field
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*/
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public function drawers(): array
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{
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if (
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isset($this->options['drawers']) === true &&
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$this->options['drawers'] instanceof Closure
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) {
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return $this->options['drawers']->call($this);
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}
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return [];
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}
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/**
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* Creates a new field instance
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*/
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public static function factory(
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string $type,
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array $attrs = [],
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Fields|null $formFields = null
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): static|FieldClass {
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$field = static::$types[$type] ?? null;
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if (is_string($field) && class_exists($field) === true) {
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$attrs['siblings'] = $formFields;
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return new $field($attrs);
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}
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return new static($type, $attrs, $formFields);
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}
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/**
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* Parent collection with all fields of the current form
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*/
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public function formFields(): Fields|null
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{
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return $this->formFields;
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}
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/**
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* Validates when run for the first time and returns any errors
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*/
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public function errors(): array
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{
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if ($this->errors === null) {
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$this->validate();
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}
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return $this->errors;
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}
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/**
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* Checks if the field is empty
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*/
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public function isEmpty(mixed ...$args): bool
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{
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$value = match (count($args)) {
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0 => $this->value(),
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default => $args[0]
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};
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if ($empty = $this->options['isEmpty'] ?? null) {
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return $empty->call($this, $value);
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}
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return in_array($value, [null, '', []], true);
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}
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/**
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* Checks if the field is hidden
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*/
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public function isHidden(): bool
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{
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return ($this->options['hidden'] ?? false) === true;
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}
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/**
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* Checks if the field is invalid
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*/
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public function isInvalid(): bool
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{
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return empty($this->errors()) === false;
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}
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/**
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* Checks if the field is required
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*/
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public function isRequired(): bool
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{
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return $this->required ?? false;
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}
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/**
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* Checks if the field is valid
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*/
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public function isValid(): bool
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{
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return empty($this->errors()) === true;
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}
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/**
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* Returns the Kirby instance
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*/
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public function kirby(): App
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{
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return $this->model()->kirby();
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}
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/**
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* Returns the parent model
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*/
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public function model(): mixed
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{
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return $this->model;
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}
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/**
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* Checks if the field needs a value before being saved;
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* this is the case if all of the following requirements are met:
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* - The field is saveable
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* - The field is required
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* - The field is currently empty
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* - The field is not currently inactive because of a `when` rule
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*/
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protected function needsValue(): bool
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{
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// check simple conditions first
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if (
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$this->save() === false ||
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$this->isRequired() === false ||
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$this->isEmpty() === false
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) {
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return false;
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}
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// check the data of the relevant fields if there is a `when` option
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if (
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empty($this->when) === false &&
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is_array($this->when) === true &&
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$formFields = $this->formFields()
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) {
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foreach ($this->when as $field => $value) {
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$field = $formFields->get($field);
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$inputValue = $field?->value() ?? '';
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// if the input data doesn't match the requested `when` value,
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// that means that this field is not required and can be saved
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// (*all* `when` conditions must be met for this field to be required)
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if ($inputValue !== $value) {
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return false;
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}
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}
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}
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// either there was no `when` condition or all conditions matched
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return true;
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}
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/**
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* Checks if the field is saveable
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*/
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public function save(): bool
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{
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return ($this->options['save'] ?? true) !== false;
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}
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/**
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* Converts the field to a plain array
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*/
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public function toArray(): array
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{
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$array = parent::toArray();
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unset($array['model']);
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$array['hidden'] = $this->isHidden();
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$array['saveable'] = $this->save();
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$array['signature'] = md5(json_encode($array));
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ksort($array);
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return array_filter(
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$array,
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fn ($item) => $item !== null && is_object($item) === false
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);
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}
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/**
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* Runs the validations defined for the field
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*/
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protected function validate(): void
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{
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$validations = $this->options['validations'] ?? [];
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$this->errors = [];
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// validate required values
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if ($this->needsValue() === true) {
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$this->errors['required'] = I18n::translate('error.validation.required');
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}
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foreach ($validations as $key => $validation) {
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if (is_int($key) === true) {
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// predefined validation
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try {
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Validations::$validation($this, $this->value());
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} catch (Exception $e) {
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$this->errors[$validation] = $e->getMessage();
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}
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continue;
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}
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if ($validation instanceof Closure) {
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try {
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$validation->call($this, $this->value());
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} catch (Exception $e) {
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$this->errors[$key] = $e->getMessage();
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}
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}
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}
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if (
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empty($this->validate) === false &&
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($this->isEmpty() === false || $this->isRequired() === true)
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) {
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$rules = A::wrap($this->validate);
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$errors = V::errors($this->value(), $rules);
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if (empty($errors) === false) {
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$this->errors = array_merge($this->errors, $errors);
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}
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}
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}
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/**
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* Returns the value of the field if saveable
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* otherwise it returns null
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*/
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public function value(): mixed
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{
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return $this->save() ? $this->value : null;
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}
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}
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