所以我一直在这个问题上撞墙，到目前为止我还没有找到解决方案。
我用最新的 Lighthouse(4.12) 创建了一个新鲜的、脆弱的 Laravel 项目，当我尝试按照文档进行操作时，我迷失了方向。
因此，根据文档，我制作了以下架构：
type Query {
posts: [Post!]! @paginate(defaultCount: 10)
}
type Mutation {
createPost(input: CreatePostInput! @spread): Post @create
}
input CreatePostInput {
title: String!
content: String
images: CreateImageMorphToMany
}
input CreateImageMorphToMany {
sync: [ID!]
connect: [ID!]
}
type User {
id: ID!
name: String!
email: String!
created_at: DateTime!
updated_at: DateTime!
images: Image! @morphOne
}
type Post {
id: ID!
title: String
content: String
images: [Image]! @morphMany
}
type Image {
id: ID!
src: String
name: String
imageable: Imageable @morphTo
}
union Imageable = Post | User
有以下课程：
后模型
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\MorphMany;
class Post extends Model
{
protected $fillable = [
'title', 'content'
];
public function images(): MorphMany
{
return $this->morphMany('App\Image', 'imageable');
}
}
图像模型
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\MorphTo;
class Image extends Model
{
public function imageable(): MorphTo
{
return $this->morphTo();
}
}
和迁移：
<?php
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
class CreatePostsTable extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('posts', function (Blueprint $table) {
$table->id();
$table->string('title');
$table->string('content');
$table->timestamps();
});
// This is only here for the sake of simplicity
Schema::create('images', function (Blueprint $table) {
$table->id();
$table->string('src');
$table->string('name');
$table->integer('imageable_id');
$table->string('imageable_type');
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::dropIfExists('posts');
Schema::dropIfExists('images');
}
}
并使用提供的 GraphQL 操场，我希望以下突变：
mutation {
createPost(input: {
title: "asd",
content: "asd",
images: {
connect: [1]
}
}) {
title
images {
src
}
}
}
将返回已创建帖子的连接/同步图像，但仅返回帖子。
但是，如果我手动设置关系并对其进行查询，则一切正常。
提前致谢！