Date.php

<?php

namespace Drupal\views\Plugin\views\argument;

use Drupal\Core\Datetime\DateFormatterInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\node\NodeInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Argument handler for dates.
 *
 * Adds an option to set a default argument based on the current date.
 *
 * Definitions terms:
 * - many to one: If true, the "many to one" helper will be used.
 * - invalid input: A string to give to the user for obviously invalid input.
 *                  This is deprecated in favor of argument validators.
 *
 * @see \Drupal\views\ManyToOneHelper
 *
 * @ingroup views_argument_handlers
 *
 * @ViewsArgument("date")
 */
class Date extends Formula implements ContainerFactoryPluginInterface {
    
    /**
     * The date format used in the title.
     *
     * @var string
     */
    protected $format;
    
    /**
     * The date format used in the query.
     *
     * @var string
     */
    protected $argFormat = 'Y-m-d';
    public $option_name = 'default_argument_date';
    
    /**
     * The route match.
     *
     * @var \Drupal\Core\Routing\RouteMatchInterface
     */
    protected $routeMatch;
    
    /**
     * The date formatter service.
     *
     * @var \Drupal\Core\Datetime\DateFormatterInterface
     */
    protected $dateFormatter;
    
    /**
     * Constructs a new Date instance.
     *
     * @param array $configuration
     *   A configuration array containing information about the plugin instance.
     * @param string $plugin_id
     *   The plugin_id for the plugin instance.
     * @param mixed $plugin_definition
     *   The plugin implementation definition.
     * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
     *   The route match.
     * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
     *   The date formatter service.
     */
    public function __construct(array $configuration, $plugin_id, $plugin_definition, RouteMatchInterface $route_match, DateFormatterInterface $date_formatter) {
        parent::__construct($configuration, $plugin_id, $plugin_definition);
        $this->routeMatch = $route_match;
        $this->dateFormatter = $date_formatter;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
        return new static($configuration, $plugin_id, $plugin_definition, $container->get('current_route_match'), $container->get('date.formatter'));
    }
    
    /**
     * Add an option to set the default value to the current date.
     */
    public function defaultArgumentForm(&$form, FormStateInterface $form_state) {
        parent::defaultArgumentForm($form, $form_state);
        $form['default_argument_type']['#options'] += [
            'date' => $this->t('Current date'),
        ];
        $form['default_argument_type']['#options'] += [
            'node_created' => $this->t("Current node's creation time"),
        ];
        $form['default_argument_type']['#options'] += [
            'node_changed' => $this->t("Current node's update time"),
        ];
    }
    
    /**
     * Gets the date default argument, formatted appropriately for this argument.
     */
    public function getDefaultArgument($raw = FALSE) {
        if (!$raw && $this->options['default_argument_type'] == 'date') {
            return date($this->argFormat, REQUEST_TIME);
        }
        elseif (!$raw && in_array($this->options['default_argument_type'], [
            'node_created',
            'node_changed',
        ])) {
            $node = $this->routeMatch
                ->getParameter('node');
            if (!$node instanceof NodeInterface) {
                return parent::getDefaultArgument();
            }
            elseif ($this->options['default_argument_type'] == 'node_created') {
                return date($this->argFormat, $node->getCreatedTime());
            }
            elseif ($this->options['default_argument_type'] == 'node_changed') {
                return date($this->argFormat, $node->getChangedTime());
            }
        }
        return parent::getDefaultArgument($raw);
    }
    
    /**
     * {@inheritdoc}
     */
    public function getSortName() {
        return $this->t('Date', [], [
            'context' => 'Sort order',
        ]);
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFormula() {
        $this->formula = $this->getDateFormat($this->argFormat);
        return parent::getFormula();
    }

}