如何解决Laravel 工厂如何将数据添加到相关表?
在 laravel 8 应用程序中,我为带有工厂的广告表添加了虚拟数据:
$ads = Ad::factory()->count(10)->expired($year,$month)->create([
]);
还有database/factories/AdFactory.PHP:
<?PHP
namespace Database\Factories;
use Config;
use Carbon\Carbon;
use App\Models\Ad;
use Illuminate\Database\Eloquent\Factories\Factory;
use Illuminate\Support\Str;
use \Cviebrock\EloquentSluggable\Services\SlugService;
class AdFactory extends Factory
{
protected $model = Ad::class;
public function deFinition()
{
$text= $this->faker->text;
$slugValue = SlugService::createSlug(Ad::class,'slug',$text);
return [
'title' => $text,'ad_token' => $text,'slug' => $slugValue,'phone_display' => (rand(1,3) == 1),'has_locations' => (rand(1,4) == 1),'status' => 'A','price' => mt_rand(10,500),'ad_type' => (rand(1,2) == 1 ? 'B' : 'S'),'description' => $this->faker->paragraphs(rand(1,4),true),'creator_id' => rand(1,5),];
}
public function expired($year,$month)
{
return $this->state(function (array $attributes) use($year,$month) {
$dateStr= $year.'-'.str_pad($month,2,"0",STR_PAD_LEFT).'-01';
$startDate= Carbon::createFromFormat('Y-m-d',$dateStr);
return [
'expire_date' => $this->faker->dateTimeInInterval($startDate,'1 month',Config::get('app.timezone'))->format('Y-m-d H:i:s')
];
});
}
}
它工作正常,但我想知道如何将虚拟数据添加到相关的 ad_categories(有 ad_id 字段)? 定义方法返回广告对象(带有新 ID),我可以在哪里访问它?
谢谢!
解决方法
您可以创建一个 CategoryFactory 类并创建 Dummy 类别,然后选择一个随机类别作为 category_id
一对多关系
//...
public function definition()
{
return [
//your code
'creatory_id' => $this->faker->randomElement(Category::all())['id'],];
}
//...
或
public function definition()
{
return [
//your code
'creatory_id' => factory(Category::class)->create()->id,];
}
第二种解决方案将为每个广告创建一个新类别
多对多关系
namespace Database\Factories;
use App\Models\AdFactory;
use App\Models\Category;
use Illuminate\Database\Eloquent\Factories\Factory;
use Illuminate\Support\Str;
class AdFactory extends Factory
{
/**
* The name of the factory's corresponding model.
*
* @var string
*/
protected $model = Ad::class;
/**
* Configure the model factory.
*
* @return $this
*/
public function configure()
{
return $this->afterCreating(function (Ad $newAd) {
$adCategory = AdCategory::factory()->count(1)->create([ 'ad_id' => $newAd->id,'category_id' => $this->faker->randomElement(Category::all())['id']);
});
}
// ...
}
欲了解更多信息,请访问 https://laravel.com/docs/8.x/database-testing#factory-callbacks
和https://laravel.com/docs/8.x/database-testing#polymorphic-many-to-many-relationships
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