Laravel model is updating multiple models instead of single - laravel

Question

I am trying to update my model using multiple where conditions.
my code is
public function UpdateEducationData(Request $request)
{
$user = app('user');
// return $request;
$education = eduinfo::where("id", $user->id)->where("exam", $request->type)->first();
// dump sql query for debugging
// $education->rawSql();
// dd($education);
$education->board = $request->board;
// $education->degree = $request->degree;
$education->year = $request->year;
$education->rollno = $request->rollno;
$education->obtainmarks = $request->obtainmarks;
$education->totalmarks = $request->totalmarks;
$education->division = $request->division;
$education->grade = $request->grade;
$education->totalcgpa = $request->totalcgpa;
$education->obtailcgpa = $request->obtailcgpa;
// update education based on exam
$education->save();
return redirect()->back()->with("message", "Education Information Updated Successfully");
return "Update Education Data";
}
My code is updating a eduinfo table based on id and exam. But whenever this function is called it updates all eduinfo records related to that user id.
I tried to update eduinfo table single record but multiple records are being update at once. I dumped eduinfo after retriving the model and yes it's retrieving the single model using first() method but still when save() is called it updates all records of that user id in eduinfo.

Answer 1

I think Your conditions to make a unique record are not.
But if you wanna Just run one time! I have an offer to you.
$flag=true;
if($flag){
$user = \Auth::user();
$education = eduinfo::where('id','=', $user->id)->where('exam','=', $request->type)->first();
$education->board = $request->board;
$education->year = $request->year;
$education->rollno = $request->rollno;
$education->obtainmarks = $request->obtainmarks;
$education->totalmarks = $request->totalmarks;
$education->division = $request->division;
$education->grade = $request->grade;
$education->totalcgpa = $request->totalcgpa;
$education->obtailcgpa = $request->obtailcgpa;
$education->save();
$flag=false;
}
It's depends on my answer.