/**
* Retrieve the given relation.
*
* @param string $attribute
* @return Relation
*/
public function relation($attribute)
{
if (!$this->hasRelation($attribute)) {
return null;
}
$attribute = $this->prepareAttribute($attribute);
$relation = $this->relations[$attribute];
if (!$relation instanceof Relation) {
$type = array_shift($relation);
$arguments = array_merge(array($this), $relation);
$arguments['name'] = $attribute;
$relation = Relation::factory($type, $arguments);
$this->relations[$attribute] = $relation;
}
return $relation;
}
/**
* Count the number of related model instances.
*
* Counts loaded instances if they are present, queries storage otherwise.
*
* @return int
*/
public function count()
{
if ($this->loaded()) {
return parent::count();
}
if (empty($this->filter())) {
return $this->storage()->count($this->table, $this->associationFilter());
}
$filter = $this->filter($this->relatedIds());
return $this->storage()->count($this->target->table(), $filter);
}