71 lines
1.9 KiB
PHP
71 lines
1.9 KiB
PHP
<?php
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namespace Drupal\datetime;
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use Drupal\Core\Datetime\DrupalDateTime;
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use Drupal\Core\TypedData\DataDefinitionInterface;
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use Drupal\Core\TypedData\TypedDataInterface;
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use Drupal\Core\TypedData\TypedData;
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/**
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* A computed property for dates of date time field items.
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*
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* Required settings (below the definition's 'settings' key) are:
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* - date source: The date property containing the to be computed date.
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*/
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class DateTimeComputed extends TypedData {
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/**
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* Cached computed date.
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*
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* @var \DateTime|null
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*/
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protected $date = NULL;
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/**
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* {@inheritdoc}
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*/
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public function __construct(DataDefinitionInterface $definition, $name = NULL, TypedDataInterface $parent = NULL) {
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parent::__construct($definition, $name, $parent);
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if (!$definition->getSetting('date source')) {
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throw new \InvalidArgumentException("The definition's 'date source' key has to specify the name of the date property to be computed.");
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function getValue($langcode = NULL) {
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if ($this->date !== NULL) {
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return $this->date;
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}
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$item = $this->getParent();
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$value = $item->{($this->definition->getSetting('date source'))};
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$storage_format = $item->getFieldDefinition()->getSetting('datetime_type') == 'date' ? DATETIME_DATE_STORAGE_FORMAT : DATETIME_DATETIME_STORAGE_FORMAT;
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try {
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$date = DrupalDateTime::createFromFormat($storage_format, $value, DATETIME_STORAGE_TIMEZONE);
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if ($date instanceof DrupalDateTime && !$date->hasErrors()) {
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$this->date = $date;
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}
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}
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catch (\Exception $e) {
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// @todo Handle this.
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}
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return $this->date;
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}
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/**
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* {@inheritdoc}
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*/
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public function setValue($value, $notify = TRUE) {
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$this->date = $value;
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// Notify the parent of any changes.
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if ($notify && isset($this->parent)) {
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$this->parent->onChange($this->name);
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}
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}
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}
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