insert from input text Field Array with checkbox

This gist might help https://gist.github.com/jimgwhit/3c1026871ca4246d6ae9f71012ba8e4d

dd($request->all()); at the start of your controller function so that you can see the request data

This is my final code its works fine.

but I'm not sure if its good or need improve

    public function store(Request $request)
    {
        $question = new Question();
        $question->question=$request->input('question');
        $question->course_id=$request->input('course');
        $question->active=$request->input('active');
        $question->admin_id=Auth::user()->id;
        $question->save();
        $units = [];

        for ($i=0;$i<count($request->answer);$i++){
            $units[] = [
                'question_id' => $question->id,
                'answer' => $request->answer[$i],
            ];
        }

        if (! empty($units)) {

            for($i=0;$i<count($units);$i++){
                $lastId= DB::table('answers')->insertGetId($units[$i]);
            }
            $correct_answer = $lastId-count($units)+$request->correctanswer;
            $question->correct_answer=$correct_answer;
            $question->save();
            return redirect('/admin/question')->with('success','تم إضافة السؤال بنجاح');
        }
    }

in html

<div>
	<input class="form-check-input" name="correctanswer" type="radio" value="1">
	<textarea name="answer[]" required></textarea>
</div>

<div>
	<input class="form-check-input" name="correctanswer" type="radio" value="2">
	<textarea name="answer[]" required></textarea>
</div>

1- insert question.

2- insert answers and questionid.

3- calculate which answer is the correct answer

4-update question table to take best answer id

validation?

authorization?

you don't need to use $request->input()

$question->question=$request->question;

is the same

you have your return inside an if statement. What if $units is empty - then you get a white screen.

consider changing the names of your form inputs

<div>
	<input class="form-check-input" name="answers[]correct" type="radio" value="1">
	<textarea name="answers[]text" required></textarea>
</div>

then you will have an array of answers, each has 'correct' and 'text' elements and you can run a simple foreach over answers and not have to use while loop with $i array pointers

Sorry I was not able to help...