有几种方法可以获取最后插入的id。所有这些都是基于您在插入时使用的方法。在这种情况下，你可以得到最后一个。

$data->save();
$data->id;

对于其他人谁需要知道如何获得最后插入id，如果他们使用其他插入方法，这里是如何:

使用create()方法 书=书:美元:创建(['名字' = > ' Laravel战士']); $lastId = $book->id; 使用insertGetId () $id = DB::table('books')->insertGetId(['name' => 'Laravel warrior']);$lastId = $id; 使用lastInsertId()方法 $lastId = DB::getPdo()->lastInsertId();

参考https://easycodesolution.com/2020/08/22/last-inserted-id-in-laravel/

你可以使用$this构造函数变量在当前函数或控制器中实现“使用Laravel Eloquent最后插入Id”(不添加任何额外列)。

public function store(Request $request){
    $request->validate([
        'title' => 'required|max:255',
        'desc' => 'required|max:5000'
    ]);

    $this->project = Project::create([
        'name' => $request->title,
        'description' => $request->desc,
    ]);

    dd($this->project->id);  //This is your current/latest project id
    $request->session()->flash('project_added','Project added successfully.');
    return redirect()->back();

}

虽然这个问题有点过时了。我的快速解决方案是这样的:

$last_entry = Model::latest()->first();

但我猜它很容易受到频繁使用的数据库的竞争条件的影响。

保存模型后，初始化实例的id为:

$report = new Report();
$report->user_id = $request->user_id;
$report->patient_id = $request->patient_id;
$report->diseases_id = $request->modality;
$isReportCreated = $report->save();
return $report->id;  // this will return the saved report id

For anyone who also likes how Jeffrey Way uses Model::create() in his Laracasts 5 tutorials, where he just sends the Request straight into the database without explicitly setting each field in the controller, and using the model's $fillable for mass assignment (very important, for anyone new and using this way): I read a lot of people using insertGetId() but unfortunately this does not respect the $fillable whitelist so you'll get errors with it trying to insert _token and anything that isn't a field in the database, end up setting things you want to filter, etc. That bummed me out, because I want to use mass assignment and overall write less code when possible. Fortunately Eloquent's create method just wraps the save method (what @xdazz cited above), so you can still pull the last created ID...

public function store() {

    $input = Request::all();
    $id = Company::create($input)->id;

    return redirect('company/'.$id);
}

这在laravel 4.2中是可行的

$id = User::insertGetId([
    'username' => Input::get('username'),
    'password' => Hash::make('password'),
    'active'   => 0
]);