Question

我正在使用Kalnoy / Nestedset，并尝试使用fakerr为我的评论表添加种子，但是出现“数组到字符串转换”错误。

评论表如下：

Schema::create('comments', function (Blueprint $table) {
            $table->increments('id');
            $table->unsignedInteger('user_id');
            $table->unsignedInteger('post_id');
            $table->text('body');
            $table->timestamps();
            $table->nestedSet();
        });

评论工厂：

use Faker\Generator as Faker;

$factory->define(
    App\Models\Comment::class,
    function (Faker $faker) {
        return [
        'user_id' => function () {
            return factory('App\Models\User')->create()->id;
        },
        'post_id' => function () {
            return factory('App\Models\Post')->create()->id;
        },
        'body' => $faker->paragraph,
        ];
    }
);

我真的无法弄清楚播种机的外观。这是我的尝试：

public function run(Post $post)
    {
        $node = factory('App\Models\Comment'::class, 3)->create([

            'children' => [
                [
                    factory('App\Models\Comment'::class, 2)->create([
                        'post_id' => $post->id
                    ]),

                    'children' => [
                        [ factory('App\Models\Comment'::class, 1)->create([
                        'post_id' => $post->id
                            ]), 
                        ],
                    ],
                ],
            ],
        ]);
    }

}

我还想确保子代的帖子ID与父代的ID相同，但现在它返回null。

Answer 1

create方法中数组的键应为模型上存在的属性。就您而言，children不是Comment模型上的属性。

使用Using Factories文档中的示例，您宁愿创建每个注释，然后在新模型上使用children()关系来创建其子级。例如：

public function run(Post $post)
{
    $node = factory('App\Models\Comment'::class, 3) // Create the root comments.
            ->create()
            ->each(function ($comment) use ($post) { // Add children to every root.
                $comment->children()->saveMany(factory(App\Comment::class, 2)->make([
                    'post_id' => $post->id
                ]))
                ->each(function ($comment)  use ($post) { // Add children to every child of every root.
                     $comment->children()->saveMany(factory(App\Comment::class, 2)->make([
                        'post_id' => $post->id
                    ]));
                });
            });

Laravel：用Faker播种嵌套的设置表

1 个答案: