/**
* Generates the unique slug
*
* @param SluggableAdapter $ea
* @param object $object
* @param string $preferedSlug
* @param boolean $recursing
* @param array $config[$slugField]
* @return string - unique slug
*/
private function makeUniqueSlug(SluggableAdapter $ea, $object, $preferedSlug, $recursing = false, $config = array())
{
$om = $ea->getObjectManager();
$meta = $om->getClassMetadata(get_class($object));
$similarPersisted = array();
// extract unique base
$base = false;
if ($config['unique'] && isset($config['unique_base'])) {
$base = $meta->getReflectionProperty($config['unique_base'])->getValue($object);
}
// collect similar persisted slugs during this flush
if (isset($this->persisted[$class = $ea->getRootObjectClass($meta)])) {
foreach ($this->persisted[$class] as $obj) {
if ($base !== false && $meta->getReflectionProperty($config['unique_base'])->getValue($obj) !== $base) {
continue;
// if unique_base field is not the same, do not take slug as similar
}
$slug = $meta->getReflectionProperty($config['slug'])->getValue($obj);
if (preg_match("@^{$preferedSlug}.*@smi", $slug)) {
$similarPersisted[] = array($config['slug'] => $slug);
}
}
}
// load similar slugs
$result = array_merge((array) $ea->getSimilarSlugs($object, $meta, $config, $preferedSlug), $similarPersisted);
// leave only right slugs
if (!$recursing) {
// filter similar slugs
foreach ($result as $key => $similar) {
if (!preg_match("@{$preferedSlug}(\$|{$config['separator']}[\\d]+\$)@smi", $similar[$config['slug']])) {
unset($result[$key]);
}
}
}
if ($result) {
$generatedSlug = $preferedSlug;
$sameSlugs = array();
foreach ((array) $result as $list) {
$sameSlugs[] = $list[$config['slug']];
}
$i = pow(10, $this->exponent);
do {
$generatedSlug = $preferedSlug . $config['separator'] . $i++;
} while (in_array($generatedSlug, $sameSlugs));
$mapping = $meta->getFieldMapping($config['slug']);
if (isset($mapping['length']) && strlen($generatedSlug) > $mapping['length']) {
$generatedSlug = substr($generatedSlug, 0, $mapping['length'] - (strlen($i) + strlen($config['separator'])));
$this->exponent = strlen($i) - 1;
if (substr($generatedSlug, -strlen($config['separator'])) == $config['separator']) {
$generatedSlug = substr($generatedSlug, 0, strlen($generatedSlug) - strlen($config['separator']));
}
$generatedSlug = $this->makeUniqueSlug($ea, $object, $generatedSlug, true, $config);
}
$preferedSlug = $generatedSlug;
}
return $preferedSlug;
}
