用laravel中的所有可能实例填充数据透视表

Question

I have two tables: days and times . These tables have a N:N relationship with each other.So I used a pivot table for them: days_times .
In my view I need a button when clicked,fills the pivot table with all the possible instances. for example if there are 2 records in days and 2 records in times ,the pivot table after the process should has 4 records:
day_id | time_id
1 | 1
1 | 2
2 | 1
2 | 2

Let's consider an action like ScheduleController@fill wants to take care of this process. How should I achieved this?

Answer 1

Here's my answer,I don't know if there is a better solution:

public function fill(){
    $days = Day::all();
    foreach($days as $day)
    {
        $times = Time::all();
        foreach($times as $time)
        {
            $day->times()->attach($time->id);
        }
    }
}

I know this is not efficient but at least it works.