Background

Given we have the following two tables where type_id references a row in questionType:

question个

id | type_id | description
---+---------+------------
1  | 1       | A nice question
.. | ..      | ..

questionType

id | name 
---+----------------
1  | Multiple-choice 
.. | ..

有以下Eloquent 的模型:

class Question extends Model {
    public function type() {
        return $this->hasOne( 'QuestionType', 'id', 'type_id' );
    }
}

class QuestionType extends Model {
}

Question 1

How can I add a new question that references an existing question type without manually doing anything with ids? For example the following works but is ugly imo since I have to manually assign the corresponding question type id:

$q = new Question;
$q->type_id = 1; // Multiple-choice
$q->description = 'This is a multiple-choice question';
$q->save();

有人会认为有一种方法可以让ORM处理id分配(在ORM中避免这样的事情难道不是重点吗？)，类似于(this does not work in Eloquent ORM)的东西:

$q = new Question;
$q->type = QuestionType.where('name', '=', 'Multiple-choice');
$q->description = 'This is a multiple-choice question';
$q->save();

Question 2

In relation to question 1, how would I go about adding a new question that references a new question type without manually doing anything with ids? Similarly I imagine something along the lines of:

$t = new QuestionType;
$t->name = 'Another type';

$q = new Question;
$q->type = $t;
$q->description = 'This is a multiple-choice question';
$q->save();

Here I'd like $q->save() to save both the new question type and question (or something similar).

以下是有效的，但我还是要自己分配id，我认为ORM应该处理这个id:

$t = new QuestionType;
$t->name = 'Another type';
$t->save();

$q = new Question;
$q->type = $t->id;
$q->description = 'This is a multiple-choice question';
$q->save();

I've tried playing with different combinations of save(), update() methods without luck. I also looked for attach() which exists on the hasMany relationships but seem to be missing in hasOne.