在内存模型中,水印错误在 Model::create() 之后将 ID 进行掩码处理

作者: ahmdadl创建于 2026年7月20日更新于 2026年7月27日

标签tracked-in-jira

Laravel-MongoDB Version: 5.8.2
PHP Version: 8.3 / 8.4
Database Driver & Version: MongoDB (Custom Connection Extension)

Description:

The integer id manually generated and assigned inside the creating model event works perfectly upon database insertion and subsequent retrieval via queries (e.g., ::find(), ::first()). However, immediately following a Model::create() operation, the returned in-memory model instance drops the custom integer id value when serialized via toArray(), replacing it with the auto-generated MongoDB hexadecimal _id string instead.

Steps to reproduce:

Extend the database connection to map a custom Mongo connection handling integer primary keys in AppServiceProvider:

php

use Illuminate\Support\Facades\DB; 
 
DB::extend("MongoDB", function ($config, $name) {
    $config["name"] = $name;
    return new CustomMongoConnection($config); 
});
DB::purge("MongoDB");

Define the model targeting the custom primary key and hooks:

php

use MongoDB\Laravel\Eloquent\Model; 
 
class Request extends Model
{
    protected $connection = 'MongoDB';
    protected $primaryKey = 'id';
    protected $keyType = 'int';
 
    protected static function booted(): void
    {
        static::creating(function ($model) {
            $generateId = fn() => random_int(100000000, 999999999);
            $modelId = $generateId();
 
            if (!$model->id) {
                $model->id = $modelId;
            }
            $model->cid = $modelId;
        });
    }
}

Execute a create() command and compare the inline model output with a freshly queried document model instance:

php

$request = Request::create([]);
dump($request->toArray()); 
 
$fetchedRequest = Request::latest()->first();
dd($fetchedRequest->toArray());

Expected behaviour:

Both toArray() outputs should yield identical structures, retaining the assigned integer id attribute without mutating it post-save.

php

array:5 [
  "_id" => "6a5e0a40a3c1417750053505"
  "id" => 285028729
  "cid" => 285028729
  "updated_at" => "2026-07-20T11:45:04.368000Z"
  "created_at" => "2026-07-20T11:45:04.368000Z"
]

Actual behaviour:

The model returned directly from Request::create() masks the integer id with the MongoDB _id string, while the fetched model displays the correct attributes: Output 1: Freshly created instance (dump($request->toArray());)

php

array:4 [
  "id" => "6a5e0a40a3c1417750053505" // BUG: Overwritten by MongoDB string _id, integer value lost in memory
  "cid" => 285028729
  "updated_at" => "2026-07-20T11:45:04.368000Z"
  "created_at" => "2026-07-20T11:45:04.368000Z"
]

Output 2: Freshly fetched from DB (dd($fetchedRequest->toArray());)

php

array:5 [
  "_id" => "6a5e0a40a3c1417750053505"
  "id" => 285028729                     // Works perfectly here!
  "cid" => 285028729
  "updated_at" => "2026-07-20T11:45:04.368000Z"
  "created_at" => "2026-07-20T11:45:04.368000Z"
]

内容来源: mongodb/laravel-mongodb

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