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   1  <?php
   2  
   3  /**
   4   * Simple caching of query results for Views displays.
   5   */
   6  class views_plugin_cache_time extends views_plugin_cache {
   7    function option_defaults(&$options) {
   8      $options['results_lifespan'] = 3600;
   9      $options['output_lifespan'] = 3600;
  10    }
  11  
  12    function options_form(&$form, &$form_state) {
  13      $options = array(60, 300, 1800, 3600, 21600, 518400);
  14      $options = drupal_map_assoc($options, 'format_interval');
  15      $options = array(-1 => t('Never cache')) + $options;
  16  
  17      $form['results_lifespan'] = array(
  18        '#type' => 'select',
  19        '#title' => t('Query results'),
  20        '#description' => t('The length of time raw query results should be cached.'),
  21        '#options' => $options,
  22        '#default_value' => $this->options['results_lifespan'],
  23      );
  24      $form['output_lifespan'] = array(
  25        '#type' => 'select',
  26        '#title' => t('Rendered output'),
  27        '#description' => t('The length of time rendered HTML output should be cached.'),
  28        '#options' => $options,
  29        '#default_value' => $this->options['output_lifespan'],
  30      );
  31    }
  32  
  33    function summary_title() {
  34      return format_interval($this->options['results_lifespan'], 1) . '/' . format_interval($this->options['output_lifespan'], 1);
  35    }
  36  
  37    function cache_expire($type) {
  38      if ($lifespan = $this->options[$type . '_lifespan']) {
  39        $cutoff = time() - $lifespan;
  40        return $cutoff;
  41      }
  42      else {
  43        return FALSE;
  44      }
  45    }
  46  
  47    function cache_set_expire($type) {
  48      if ($lifespan = $this->options[$type . '_lifespan']) {
  49        return time() + $lifespan;
  50      }
  51      else {
  52        return CACHE_PERMANENT;
  53      }
  54    }
  55  }