Laravel update/edit using foreach loop - php

Question

I was trying to update my table but I couldn't make it work.. I always end up with the error:
Invalid argument supplied for foreach()
Here is my Controller:
public function show_score($id)
{
$scores = Score::with(['lead','subject'])->where(['subject_id'=>$id])->get();
return view('markbook.show_score',compact('scores'));
}
public function update_score(Request $request)
{
$id = $request->input('id');
$scores = Score::find($id);
foreach ($scores as $datas) {
$datas->jan_ap=$request->input('jan_ap');
$datas->jan_hm=$request->input('jan_hm');
$datas->save();
}
}
route:
Route::get('markbook/scores/{id}', 'MarkbookController#show_score' );
Route::post('markbook/scores', 'MarkbookController#update_score');
Here is my table I'm trying to loop the updated score:

Answer 1

From chat discussion what found is that you want to update multiple scores, which is listed in tr, td. You can change it like this
Change in view
#foreach($scores as $score)
<tr>
<td>{{$score->lead->student_name}} <input type="hidden" name="scores[{{$loop->index}}][id]" value="{{$score->id}}"></td>
<td><input type="text" name="scores[{{$loop->index}}][jan_ap]" value="{{$score->jan_ap}}"></td>
<td><input type="text" name="scores[{{$loop->index}}][jan_hm]" value="{{$score->jan_hm}}"></td>
</tr>
#endforeach
Controller update score
public function update_score(Request $request)
{
$scores = $request->input('scores'); //here scores is the input array param
foreach($scores as $row){
$score = Score::find($row['id']);
$score->jan_ap = $row['jan_ap'];
$score->jan_hm = $row['jan_hm'];
$score->save();
}
}

Answer 2

Using Score::find($id) you're only ever going to return 1 result so there won't be anything to foreach over.
If you just want to update a single row in the table you don't need to foreach it.
You can simply run
$score = Score::find($request->input($id));
$score->jan_ap = $request->input('jan_ap');
$score->jan_hm = $request->input('jan_hm');
$score->save();
if you want to return multiple rows you need to change your find to a get()
so $scores = Score::where('something', $request->input('something))->get();
If you want to update every row in the table with the same information you'd do a:
$scores = Score::all();
That would return every row in the table.