getMany collection always empty after implementing caching

42 Posts

mopox Reply #1, 10 years, 4 months ago

Hi,

i wrote a bit of code. which was working before i implemented some caching:

/* caching */
$output = '';
$cacheOptions = array(xPDO::OPT_CACHE_KEY => 'mycache');
$cacheKey = 'path/'.md5($_SERVER['REQUEST_URI']);
$cacheManager = $modx->getCacheManager();
$cacheLifeTime = strtotime("tomorrow 00:00:00") - time();

if(is_null($output = $cacheManager->get($cacheKey, $cacheOptions))) {
      /* ... */

      $obj = $modx->getObject('modResource', $modx->resource->get('id'));
      $TVs = array();
      foreach ($obj->getMany('TemplateVars') as $tv) {
        $TVs[$tv->get('name')] = $tv->getValue($modx->resource->get('id'));
      }
      /* somehow $TVs is always array(0) */

      /* ... */

      $cacheManager->set($cacheKey, $output, $cacheLifeTime, $cacheOptions);
}

return $output;

well, also if i disable caching in that code $TVs still is empty. actually i didnt realy touched the getMany() statements in the last days. it was runing before i implemented the caching.

is there something special to consider about caching? is getMany() somehow influenced by caching?

24,544 Posts

BobRay Reply #2, 10 years, 4 months ago

Try replacing this:

$obj = $modx->getObject('modResource', $modx->resource->get('id'));
      $TVs = array();
      foreach ($obj->getMany('TemplateVars') as $tv) {
        $TVs[$tv->get('name')] = $tv->getValue($modx->resource->get('id'));
      }

with this:

$tvs = $modx->resource->getMany('TemplateVars');
if (count($tvs) == 0) {
   return 'No TVs retrieved');
}
$myTVs = array();
foreach ($tvs as $tv) {
    $myTVs[$tv->get('name')] = $tv->getValue($modx->resource->get('id'));
}

return print_r($myTVs, true);

(You may have to go back to getting the resource object first.)

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42 Posts

mopox Reply #3, 10 years, 4 months ago

Quote from: BobRay at Jun 12, 2016, 05:25 PM

Try replacing this:

$tvs = $modx->resource->getMany('TemplateVars');
if (count($tvs) == 0) {
   return 'No TVs retrieved';
}
$myTVs = array();
foreach ($tvs as $tv) {
    $myTVs[$tv->get('name')] = $tv->getValue($modx->resource->get('id'));
}

return print_r($myTVs, true);

(You may have to go back to getting the resource object first.)

Thank you for your post. i am getting "No TVs retrived" if i copy and paste your code in my snippet. actually i am using the getMany in a foreach where i look through some childs and i am grabbing the childs TVs.

But i figured out that getMany always is empty. Also when i use it in other snippets.

I am considering to rewind the backup copy form the day before yesterday where it was runing. Then i might use "diff" to figure out what changed. But thats a lot of work sad