Laravel 8 如何使用带有 UUID 主键的工厂播种？

Question

我有版本和问题 tables，具有一对多关系（问题 N-1 版本）。

当我尝试在我的 Issue 工厂上调用 create() 方法时，我遇到了 NOT NULL 违规：

SQLSTATE[23502]: Not null violation: 7 ERROR: null value in column "id" violates not-null constraint
DETAIL: Failing row contains (null, 1, 12011981, null, 2021-09-01 23:09:17, 2021-09-01 23:09:17, null). (SQL: insert into "issues" ("id", "issuing_date", "edition_id", "updated_at", "created_at") values (?, 12011981, 1,
2021-09-01 23:09:17, 2021-09-01 23:09:17)).

但是我指定了一个 ID 我的 Issue Factory:

class IssueFactory extends Factory
{
    /**
     * The name of the factory's corresponding model.
     *
     * @var string
     */
    protected $model = Issue::class;

    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition()
    {
        $timestamp = mt_rand(1, time());
        $randomDate = date("dmY", $timestamp);

        return [
            'id' => Str::uuid(),
            'issuing_date' => $randomDate,
            'edition_id' => 1,
        ];
    }
}

我的播种机：

public function run()
{
    Edition::each(function ($edition) {
       Issue::factory()
          ->count(10)
          ->for($edition)
          ->create();
    });
}

问题 table 迁移：

Schema::create('issues', function (Blueprint $table) {
    $table->uuid('id')->primary();
    $table->integer('edition_id');
    $table->string('issuing_date');

    $table->timestamps();
    $table->softDeletes();

    $table->foreign('edition_id')->references('id')->on('editions');
});

问题模型的相关部分：

    public $incrementing = false;

    protected $table = 'issues';
    protected $keyType = "string";
    protected $primaryKey = "id";
    protected $guarded = [];
    protected $fillable = [
        "id",
        "edition_id",
        "issuing_date"
    ];

我做错了什么？

Answer 1

您必须在 Schema

中使用如下所示

$table->uuid('id', 36)->primary();

在您的模型中使用

use Illuminate\Support\Str;

public $incrementing = false;

protected $keyType = 'string';

public static function boot(){
    parent::boot();

    static::creating(function ($issue) {
        $issue->id = Str::uuid(36);
    });
}

下面这行也添加到你的工厂

use Illuminate\Support\Str;

Laravel 8 如何使用带有 UUID 主键的工厂播种？

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