How to check if "getObject" returns empty?

142 Posts

mtalvenheimo Reply #1, 6 years, 10 months ago

Hi,

I have url-column in database table (loremipsum) with unique values. I'm trying to check if value ($_POST['url']) already exist on table. If $_POST['url'] doesn't match to database url-column, getObject should return empty - right?

Why this is not working?

$object = $modx->getObject('loremipsum',array('url'=>$_POST['url']));

if (!$object) {
    $modx->log(modX::LOG_LEVEL_ERROR, 'empty');
//This is not working
} else {
    $modx->log(modX::LOG_LEVEL_ERROR, 'url exist');
//This is working
}

and vice versa

$object = $modx->getObject('loremipsum',array('url'=>$_POST['url']));

if ($object) {
    $modx->log(modX::LOG_LEVEL_ERROR, 'url exist');
//This working
} else {
    $modx->log(modX::LOG_LEVEL_ERROR, 'empty');
//This is not working
}

So i have problems to execute script if $object returns empty (or null)

- 24,544 Posts
BobRay Reply #2, 6 years, 10 months ago
getObject() returns null if it fails, so you can always use
```
if ($object === null) 
```
or
```
if ($object !== null) 
```
Since you're searching by $_POST['url'], is it possible that you're testing at a time when that's not set?

Maybe doing something like this would help:
```
if (isset($_POST['url']) && (!empty($_POST['url']))) {
    if ($modx->getObject('loremipsum', array('url' => $_POST['url'])) !== null) {
        /* It exists */
    } else {
        /* It doesn't exist, or the $_POST variable is not set */
    }
}
```
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