Date.php

1. 8.x drupal/core/lib/Drupal/Core/Datetime/Date.php
2. 8.x drupal/core/lib/Drupal/Core/TypedData/Type/Date.php
3. 8.x drupal/core/vendor/easyrdf/easyrdf/lib/EasyRdf/Literal/Date.php
4. 8.x drupal/core/vendor/symfony/validator/Symfony/Component/Validator/Constraints/Date.php
5. 8.x drupal/core/modules/views/lib/Drupal/views/Plugin/views/field/Date.php
6. 8.x drupal/core/modules/views/lib/Drupal/views/Plugin/views/argument/Date.php
7. 8.x drupal/core/modules/views/lib/Drupal/views/Plugin/views/sort/Date.php
8. 8.x drupal/core/modules/views/lib/Drupal/views/Plugin/views/filter/Date.php

<?php

/**
 * @file
 * Definition of Drupal\views\Plugin\views\argument\Date.
 */
namespace Drupal\views\Plugin\views\argument;

use Drupal\Component\Annotation\PluginID;
use Drupal\Core\Database\Database;

/**
 * Abstract 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\ManyTonOneHelper
 *
 * @ingroup views_argument_handlers
 *
 * @PluginID("date")
 */
class Date extends Formula {

  /**
   * 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';
  var $option_name = 'default_argument_date';

  /**
   * Add an option to set the default value to the current date.
   */
  public function defaultArgumentForm(&$form, &$form_state) {
    parent::defaultArgumentForm($form, $form_state);
    $form['default_argument_type']['#options'] += array(
      'date' => t('Current date'),
    );
    $form['default_argument_type']['#options'] += array(
      'node_created' => t("Current node's creation time"),
    );
    $form['default_argument_type']['#options'] += array(
      'node_changed' => t("Current node's update time"),
    );
  }

  /**
   * Set the empty argument value to the current date,
   * 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'], array(
      'node_created',
      'node_changed',
    ))) {
      foreach (range(1, 3) as $i) {
        $node = menu_get_object('node', $i);
        if (!empty($node)) {
          continue;
        }
      }
      if (arg(0) == 'node' && is_numeric(arg(1))) {
        $node = node_load(arg(1));
      }
      if (empty($node)) {
        return parent::getDefaultArgument();
      }
      elseif ($this->options['default_argument_type'] == 'node_created') {
        return date($this->argFormat, $node->created);
      }
      elseif ($this->options['default_argument_type'] == 'node_changed') {
        return date($this->argFormat, $node->changed);
      }
    }
    return parent::getDefaultArgument($raw);
  }

  /**
   * {@inheritdoc}
   */
  public function getSortName() {
    return t('Date', array(), array(
      'context' => 'Sort order',
    ));
  }

  /**
   * Overrides \Drupal\views\Plugin\views\argument\Formula::getFormula().
   */
  public function getFormula() {
    $this->formula = $this
      ->getDateFormat($this->argFormat);
    return parent::getFormula();
  }

}