public function getManyToManyRelation()
{
return $this->getLinkModel() === null ? new ModelRelation([]) : ModelRelation::getRelation($this->isOneToMany() ? $this->modelSource : $this->modelTarget, $this->modelLink);
}
/**
* Returns the name of the FK field used by $this Model to point to Models of
* type $model.
*
* If you don't use the recommended method of naming foreign-keys
* (ie. "foreign_table_id") on $this Model, then you can override this method
* to return customized foreign-keys.
*
* @param string|Model Model to which the foreign-key points
* @param string Relationship reference
* @return string
*/
public function getForeignKey($model, $relationRef = ModelRelation::REF_DEFAULT)
{
// TODO: Add a result cache here
// Get Model name if passed an instance
if ($model instanceof Model) {
$model = $model->modelName;
}
// Get the relationship between $this and $model
$rel = ModelRelation::getRelation($this->modelName, $model, $relationRef);
// Normal relation
return $rel->isOneToMany() ? $rel->getForeignKey() : $rel->getNativeKey();
}