如何使用 elequent model 在 laravel 8 中获取最后插入的 id

Question

i want to get the last iserted id in my table to affect it into an other table i've tried thosz but it doesnt work getPdo()->lastInsertId(), also lastInsertId()

   public function create()
    {

        $demande_inscription=Demande_inscription::create([
            'id_demandeur' => Demandeur::getPdo()->lastInsertId(),


        ]);
        return response()->json([$demande_inscription],201);


    }

Answer 1

if you are using eloquent then the object of the class that is used to create/save record is having the id of the record you inserted, let me explain it below

$object = new Model();
$object->DBfield = Data;
$object->save();

// After saving your record
$object->id;

Answer 2

For Laravel

$user = new User();

$user->name = 'Rakesh';

$user->save();

//Getting Last inserted id

$insertedId = $user->id;

Answer 3

Just use insertGetId() from Query Builder.

use illuminate\Support\Facades\DB; 
... 

$id = DB::table('your_table')->insertGetId(['your associative array']);

In Eloquent Way:

$model = Model::create(['array']);
$id    = $model->id;

Queries Eloquent