Model updateOrCreate(array $attributes, array $values = array())

mixed getRelationValue(string $key) Get a relationship.

Model create(array $attributes)

Collection|

mixed getParentKey() Get the key value of the parent's local key.

void addConstraints() Set the base constraints on the relation query.

array matchOne(array $models, Collection $results

Builder|

Model getParent()

string getQualifiedForeignKey() Get the fully qualified foreign key of