CakeDC\Users\Model\Table\SocialAccountsTable::buildRules PHP Method

Returns a rules checker object that will be used for validating application integrity.

public buildRules ( Cake\ORM\RulesChecker $rules ) : Cake\ORM\RulesChecker
$rules	Cake\ORM\RulesChecker	The rules object to be modified.
return	Cake\ORM\RulesChecker

    public function buildRules(RulesChecker $rules)
    {
        $rules->add($rules->existsIn(['user_id'], 'Users'));
        return $rules;
    }

SocialAccountsTable