Getting last inserted id

Following approach can be done to get the last inserted id of a model.

Step 01: Using mass assignment in model with fillable for fields to be inserted to tbl

protected $fillable = ['name', 'is_popular'];

Step 02: In controller, using create method of model to insert fields and getting last inserted id through the returned reference of model

$category = Category::create(['name'=>'demo from script','is_popular' => 1]);
// getting last inserted id
dd($category->id);

Another Approach: Only Step without mass assignment

$category = new Category();
$category->name = 'demo from script';
$category->is_popular = 1;
$category->save();
// getting last inserted id
dd($category->id);

Above snippet, mass assignment in model is not needed. Using save method in controller for a resource will help to insert required fields into tbl and then getting last inserted id for the next purposes.