Where is the error for update data in Laravel?-CodePudding

Why is there an error when updating or editing data in Laravel using a data array, like this error.

foreach() argument must be of type array|object, string given

Database in MySQL:

Code:

Controller:

public function UpdateGradeStudent(Request $request){

    $data = GradeDetail::find($request->id_grade_detail);

    foreach($request->get('id_grade') as $index => $value) {
        GradeDetail::updated([
            $data->quiz =>$request->quiz[$index],
            $data->assignment => $request->assignment[$index],
            $data->d_t => $request->d_t[$index],
            $data->min_text => $request->min_text[$index],
            $data->final_text => $request->final_text[$index],
            $data->total => $request->final_text[$index],
        ]);
    }

    return redirect('teacher/data-grade');
}

Blade:

form method="POST" action="{{route('edit.teacher.grade')}}" enctype="multipart/form-data">
                @csrf
                <input type="hidden" name="id_grade" value="{{ $userGrades->id_grade }}">
                <div >
                    <input type="submit"  type="button" value="Save">
                    <a href="{{url('teacher/data-grade')}}"  type="button" >Cancel</a>
                </div>

                <table >
                    <tbody>
                    @forelse($subject as $data)
                        <tr >
                            <th scope="row" >
                                <input
                                    type="number"
                                    min="0"
                                    max="100"
                                    name="quiz[]"
                                    id="quiz"
                                    value="{{$data->quiz}}"
                                    autocomplete="quiz"
                                    
                                    required
                                >
                            </th>
                            <th scope="row" >
                                <input
                                    type="number"
                                    min="0"
                                    max="100"
                                    name="assignment[]"
                                    id="assignment"
                                    value="{{$data->assignment}}"
                                    autocomplete="min_score"
                                    
                                    required
                                >
                            </th>

And how or which part of the error to be able to update data using an array?

CodePudding user response：

You have to change id_grade hidden input like this

                <input type="hidden" name="id_grade[]" value="{{ $userGrades->id_grade }}">

CodePudding user response：

$request->get('id_grade') will return the value of id_grade which will be a string as mentioned by @zohrehda. Please update your foreach loop to be

foreach($request->all() as $index => $value) {

$request->all() returns an array of all your inputs which can be iterated upon.

Additionally, your update method has a typo. It should be GradeDetail::update and not GradeDetail::updated.