Laravel 7：为类别创建自定义工厂

Question

我试图让以下类别工厂工作。

类别工厂

<?php

/** @var \Illuminate\Database\Eloquent\Factory $factory */

use App\Category;
use Illuminate\Support\Str;
use Faker\Generator as Faker;

$categories = ['category', 'category-2', 'category-3']

$factory->define(Category::class, function (Faker $faker) {
    return [
        'name' => // I can't use a foreach here
        'slug' => Str::slug($category),
    ];
});

我该如何实现？

我需要我的类别是独一无二的

使用来自@omr 的最新更新进行更新

分类工厂

use App\Category;
use Illuminate\Support\Str;
use Faker\Generator as Faker;

$categories = ['Hardware', 'Software', 'Planning', 'Tools'];

foreach ($categories as $categoryName) {
    factory(Category::class)->create([
        'name' => $categoryName,
        'slug' => Str::slug($categoryName),
    ]);
}

数据库播种器

public function run()
    {
        factory('App\Category', 20)->create();
        
    }

 ErrorException 

  require(/home/dan/Codes/laravel/jobportal/database/factories/CategoryFactory.php): failed to open stream: Too many open files

  at vendor/laravel/framework/src/Illuminate/Database/Eloquent/Factory.php:220
    216|         $factory = $this;
    217| 
    218|         if (is_dir($path)) {
    219|             foreach (Finder::create()->files()->name('*.php')->in($path) as $file) {
  > 220|                 require $file->getRealPath();
    221|             }
    222|         }
    223| 
    224|         return $factory;
 

谢谢

Answer 1

您可以使用 $faker->numberBetween 从 $categories 数组中获取随机元素，然后在工厂中使用它：

$categories = ['category', 'category-2', 'category-3'];

$factory->define(Category::class, function (Faker $faker)use($categories) {
    $categoryName= $categories[$faker->numberBetween(0,count($categories)-1)];
    return [
        'name' =>$categoryName,
        'slug' => Str::slug($categoryName),
    ];
});

编辑：

如果您想生成唯一的类别名称

第一：标准类工厂：

$factory->define(Category::class, function (Faker $faker){

    return [
        'name' =>$faker->name,
        'slug' =>  Str::slug($faker->text(12))
    ];
});

只要通过自己的工厂字段，就不用担心类别名称和slug兼容性....

秒：

现在，当您创建类别时，您可以传递所需的属性，如下所示：

在数据库播种器中：

use use Faker\Generator;

....... .......

$counter=0;
while($counter<20)
{
$categoryName=$faker->text(12);
if(Category::firstWhere('name',$categoryName)==null)
{
$counter+=1;
factory(Category::class)->create(['name'=>$categoryName,'slug'=>Str::slug($categoryName)]);
}
}

不要直接使用 factory('App\Category', 20)->create();没有参数它不能帮助你...

Answer 2

您需要database seeder.

您的类别工厂将在下面有代码

$factory->define(Category::class, function (Faker $faker) {
    return [
        'name' => 'Name',
        'slug' => 'name',
    ];
});

您的数据库播种器将拥有：

$categories = ['Category', 'Category 2', 'Category 3'];

foreach($categories as $category) {
  factory(App\Category::class)->create([
    'name' => $category,
    'slug' => \Str::slug($category)
  ]);
}

现在运行：php artisan db:seed（注意：这将为所有其他播种机播种，更好地使用：--class=YOUR_SEED_CLASS）