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   1  <?php
   2  /**
   3   * Abstract argument handler for dates.
   4   *
   5   * Adds an option to set a default argument based on the current date.
   6   *
   7   * @param $arg_format
   8   *   The format string to use on the current time when
   9   *   creating a default date argument.
  10   *
  11   * Definitions terms:
  12   * - many to one: If true, the "many to one" helper will be used.
  13   * - invalid input: A string to give to the user for obviously invalid input.
  14   *                  This is deprecated in favor of argument validators.
  15   * @see views_many_to_one_helper
  16   *
  17   * @ingroup views_argument_handlers
  18   */
  19  class views_handler_argument_date extends views_handler_argument_formula {
  20    var $option_name = 'default_argument_date';
  21    var $arg_format = 'Y-m-d';
  22  
  23    /**
  24     * Add an option to set the default value to the current date.
  25     */
  26    function default_argument_form(&$form, &$form_state) {
  27      parent::default_argument_form($form, $form_state);
  28      $form['default_argument_type']['#options'] += array('date' => t('Current date'));
  29      $form['default_argument_type']['#options'] += array('node_created' => t("Current node's creation time"));
  30      $form['default_argument_type']['#options'] += array('node_changed' => t("Current node's update time"));  }
  31  
  32    /**
  33     * Set the empty argument value to the current date,
  34     * formatted appropriately for this argument.
  35     */
  36    function get_default_argument($raw = FALSE) {
  37      if (!$raw && $this->options['default_argument_type'] == 'date') {
  38        return date($this->arg_format, time());
  39      }
  40      else if (!$raw && in_array($this->options['default_argument_type'], array('node_created', 'node_changed'))) {
  41        foreach (range(1, 3) as $i) {
  42          $node = menu_get_object('node', $i);
  43          if (!empty($node)) {
  44            continue;
  45          }
  46        }
  47    
  48        if (arg(0) == 'node' && is_numeric(arg(1))) {
  49          $node = node_load(arg(1));
  50        }
  51  
  52        if (empty($node)) {
  53          return parent::get_default_argument();
  54        }
  55        else if ($this->options['default_argument_type'] == 'node_created') {
  56          return date($this->arg_format, $node->created);
  57        }
  58        else if ($this->options['default_argument_type'] == 'node_changed') {
  59          return date($this->arg_format, $node->changed);
  60        }
  61      }
  62  
  63      return parent::get_default_argument($raw);
  64  
  65    }
  66  }