Question

我有问题，我有联系人，但将其分为“个人”或“公司”，创建了一个interface，但在执行该操作时会产生错误：

#contact types
enum contactType{
    persona @enum(value: 2)
    empresa @enum(value: 3)
}
enum contactIdType{
    cedula @enum(value: 1)
    nit @enum(value: 2)
    pasaporte @enum(value: 3)
    cedula extranjera @enum(value: 4)
}
interface Contact{
    id_contact:ID!
    type:contactType!
    name:String!
    identification_type:contactIdType!
    identification_number:Int!
    email:String!
    phones:String!
    state:Int!
    address:String
    web_site:String
}

type Person implements Contact{
    id_contact:ID!
    id_parent_contact:Int
    id_job:Int
    type:contactType!
    name:String!
    lastname:String
    identification_type:contactIdType!
    identification_number:Int!
    email:String!
    phones:String!
    state:Int!
    address:String
    web_site:String
}

type Company implements Contact{
    id_contact:ID!
    type:contactType!
    name:String!
    identification_type:contactIdType!
    identification_number:Int!
    email:String!
    phones:String!
    state:Int!
    locate:String
    city:String
    address:String
    web_site:String
}

查询：

type Query {    
    #Contacts
    contacts: [Contact!]! @all(model: "App\\Contact")
    contacts_paginator: [Contact]! @paginate(type: "paginator" model: "App\\Contact")
    contact(name: String! @eq): Contact @find(model: "App\\Contact")

}

///////////////////////////////////////////////// ////////

query{
  contacts{
    name
    type     
  }
}

结果：

{
  "errors": [
    {
      "debugMessage": "Abstract type Contact must resolve to an Object type at runtime for field Query.contacts with value \"{\"id_contact\":4,\"id_parent_contact\":null,\"id_job\":null,\"type\":2,\"name\":\"Laura\",\"lastname\":\"Sanchez\",\"identification_type\":1,\"identification_number\":1049342129,\"email\":\"laura@gmail.com\",\"phones\":\"3203428890\",\"state\":1,\"locate\":null,\"city\":null,\"address\":null,\"web_site\":null}\", received \"Contact\". Either the Contact type should provide a \"resolveType\" function or each possible type should provide an \"isTypeOf\" function.",
      "message": "Internal server error",
      "extensions": {
        "category": "internal"
      },
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "contacts",
        0
      ]

我正在使用laravel灯塔

Answer 1

错误消息很清楚。让我为您分解一下：

Abstract type Contact must resolve to an Object type at runtime for field Query.contacts

您正在从您的字段返回接口Contact。 GraphQL需要确定具体的对象类型，在您的情况下为Company或Person。

Either the Contact type should provide a \"resolveType\" function or each possible type should provide an \"isTypeOf\" function.

该部分告诉您需要发生什么：您需要某种方法来确定Contact的条目是Company还是Person。

通常，如果您使用不同的模型类，Lighthouse可以自动确定。看来您使用的是同一设备，因此您必须实现一个自定义类型解析器。

您可以使用以下方法简单地创建一个：

php artisan lighthouse:interface Contact

详细了解Lighthouse中的接口：https://lighthouse-php.com/master/the-basics/types.html#interface

Answer 2

现在错误已更改，因为他相信： <?php namespace App\GraphQL\Interfaces; use GraphQL\Type\Definition\Type; use GraphQL\Type\Definition\ResolveInfo; use Nuwave\Lighthouse\Schema\TypeRegistry; class Contact { /** * The type registry. * * @var \Nuwave\Lighthouse\Schema\TypeRegistry */ protected $typeRegistry; /** * Constructor. * * @param \Nuwave\Lighthouse\Schema\TypeRegistry $typeRegistry * @return void */ public function __construct(TypeRegistry $typeRegistry) { $this->typeRegistry = $typeRegistry; } /** * Decide which GraphQL type a resolved value has. * * @param mixed $rootValue The value that was resolved by the field. Usually an Eloquent model. * @param \Nuwave\Lighthouse\Support\Contracts\GraphQLContext $context * @param \GraphQL\Type\Definition\ResolveInfo $resolveInfo * @return \GraphQL\Type\Definition\Type */ public function resolveType($rootValue, GraphQLContext $context, ResolveInfo $resolveInfo): Type { // Default to getting a type with the same name as the passed in root value // TODO implement your own resolver logic - if the default is fine, just delete this class return $this->typeRegistry->get(class_basename($rootValue)); } } 然后生成了这个文件：

{
  "errors": [
    {
      "debugMessage": "Argument 2 passed to App\\GraphQL\\Interfaces\\Contact::resolveType() must be an instance of App\\GraphQL\\Interfaces\\GraphQLContext, instance of Nuwave\\Lighthouse\\Schema\\Context given, called in C:\\Users\\Guecha\\Laravel-projects\\APP_ControlIngenieria\\app\\vendor\\webonyx\\graphql-php\\src\\Type\\Definition\\InterfaceType.php on line 114",
      "message": "Internal server error",
      "extensions": {
        "category": "internal"
      },
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "contacts",
        0
      ],

结果：


<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Contact extends Model
{
    protected  $table= 'contacts';

    protected $primaryKey = 'id_contact';

    public $timestamps = false;

    protected $fillable = [
        'id_parent_contact',
        'id_job',
        'type',
        'name',
        'lastname',
        'identification_type',
        'identification_number',
        'email',
        'phones',
        'state',
        'locate',
        'city',
        'address',
        'web_site'
    ];
}

在我的模型中，我有：

{{1}}

我不知道错误是什么：（

如何在Laravel中使用lightHouse解决接口错误？

2 个答案: