Array field always stores the last value of the field into database - laravel-5

Question

Help me working with array inputs on my project.
This is the form field:
<form action="" method="">
<input type="text" class="form-control" name="scores[]">
<input type="hidden" name="lesson_id[]" value="">
<input type="hidden" name="year_id" value="">
<input type="hidden" name="grade_id" value="">
<input type="hidden" name="clas_id" value="">
<input type="hidden" name="student_id" value="">
</form>
My Controller:
public function store(Request $request)
{
foreach ($request->scores as $score)
{
$scr = new Assestment;
$scr->year_id = $request->year_id;
$scr->grade_id = $request->grade_id;
$scr->clas_id = $request->clas_id;
$scr->student_id = $request->student_id;
foreach($request->lesson_id as $lesson)
{
$scr->lesson_id = $lesson;
}
$scr->score = $score;
$scr->save();
}
}
My Model:
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class Assestment extends Model
{
protected $table = 'assestments';
protected $fillable = [
'year_id', 'grade_id', 'clas_id', 'student_id', 'lesson_id', 'score',
];
public function students()
{
return $this->belongsToMany('App\Models\Student');
}
}
I would like to make the value of field "scores[]" and "lesson_id[]" as array so that they store multiple data to database.
But when I submit the form, the "lesson_id[]" always store the last value of the form. For example, the field "lesson_id[]" contains multiple values like "1, 2, 3 , 4", but the value stored into database is always "4 (the last value of the field)".
What should I do?

Answer 1

Only the last value is stored because you stored the data after foreach loop.
If you want to store the socres[] and lesson_id[] as an array in the same table, you can use serialize()
$scr = new Assestment;
$scr->year_id = $request->year_id;
$scr->grade_id = $request->grade_id;
$scr->clas_id = $request->clas_id;
$scr->student_id = $request->student_id;
$scr->lesson_id = serialize($request->lesson_id);
$scr->score = serialize($request->$score);
$scr->save();
To retreive each value, use unserialize()