Laravel 5.1模型工厂的外键 [英] Laravel 5.1 foreign keys in model factory

问题描述

如何在模型工厂中定义外键？例如，如果我有一个组织表有一个外键的国家表，在我的模型工厂，我不得不为国家ID定义一个虚拟值，如下所示：

  $ factory-> define（App \Organisation :: class，function（$ faker）{
 return [
'name'=> $ faker->公司，
'country_id'=> 197，
]; 
}）; 
  

在我的组织表播种器类中，我做了以下工作，但是faker对象不存在 - do我需要在我的播种班上创建一个新的faker对象？

 使用Illuminate \Database\Seeder; 
 
 class OrganisationsTableSeeder extends Seeder 
 {
 
 public function run（）
 {
 $ countryIds = Country :: lists（'id' ） - >所有（）; 
 $ b $ factory（'App \ Organization'，3） - > create（[
 // //覆盖出厂默认值
'country_id'=> $ faker-> randomElement [$ countryIds]，
]）; 
 
 
 
 
 $ p $数据库播种类
 
 
  class DatabaseSeeder extends Seeder 
 {
 public function run（）
 {
 
 Model :: unguard（）; 
 
 $ this-> call（'CountriesTableSeeder'）; 
 $ this-> call（'OrganisationsTableSeeder'）; 
 
 Model :: reguard（）; 
 
 
 $ / code $ / pre 
 
 
定义外键的最佳方式是什么模型工厂？是否有可能从模型工厂中省略country_id并将其添加到seeder类中 - 从文档看来，您只能覆盖在模型工厂中定义的现有值，但不能通过播种器类添加新值 - 正确我如果我错了？
解决方案
我可能有点晚，但我有同样的问题，这给我修好了你应该可以这样做：
 
 $ $ $ $ $ $ $ $ $ $ $ $ factory $> define（App_Organisation :: class，function（$ faker） {
 return [
'name'=> $ faker-> company，
'country_id'=> factory（App\Country :: class） - > create（） - > id，
]; 
}）; 
  
然后在你的种子里你只需要打电话给
 $ b $ （> create（）; 
  

它也会为您创建国家。

How do you define foreign keys in a model factory. For example if I have a organisations table which has a foreign key to the countries table, in my model factory I'm having to define a dummy value for the country id as follows:

$factory->define(App\Organisation::class, function ($faker) {
   return [
      'name' => $faker->company,
      'country_id' => 197,
   ];
});

In my organisations table seeder class I am doing the following but the faker object isn't present - do I need to create a new faker object in my seeder class?

use Illuminate\Database\Seeder;

class OrganisationsTableSeeder extends Seeder
{

   public function run()
   {
      $countryIds = Country::lists('id')->all();

      factory('App\Organisation', 3)->create([
        // override factory default
        'country_id' => $faker->randomElement[$countryIds],
    ]);
   }
}

Database seeder class

class DatabaseSeeder extends Seeder
{
     public function run()
     {

        Model::unguard();

        $this->call('CountriesTableSeeder');
        $this->call('OrganisationsTableSeeder');

        Model::reguard();
     }
}

Whats the best way to define the foreign keys when defining model factories? Is it possible to omit the country_id from the model factory and add it in the seeder class instead - from the documention it seems you can only override an existing value defined in the model factory but you cant add a new value via the seeder class - correct me if i'm wrong?

解决方案

I may be a bit late on this one but I was having the same issue, this fixed it for me. You should be able to do

$factory->define(App\Organisation::class, function ($faker) {
    return [
      'name' => $faker->company,
      'country_id' => factory(App\Country::class)->create()->id,
    ];
});

and then in your seed you just need to call

factory(App\Organisation::class, 5)->create();

and it will create the countries for you as well.

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