Validate that the plugin is correct and can be saved.
An array of error strings to tell the user what is wrong with this plugin.
Overrides PluginBase::validate
public function validate() {
$errors = parent::validate();
if ($this
->usesRowPlugin()) {
$plugin = $this->displayHandler
->getPlugin('row');
if (empty($plugin)) {
$errors[] = t('Style @style requires a row style but the row plugin is invalid.', array(
'@style' => $this->definition['title'],
));
}
else {
$result = $plugin
->validate();
if (!empty($result) && is_array($result)) {
$errors = array_merge($errors, $result);
}
}
}
return $errors;
}