变异中的 Laravel LightHouse GraphQL DateTime 输入始终为空

Question

我正在学习 Laravel 和 LightHouse，我正在尝试创建一个突变，它需要一个 DateTime 并将其放入数据库中。每次我通过 DateTime 进行突变时，输入都不会显示，只是被标记为 null，在数据库中触发错误，因为表不允许 DateTime 为 null。我所有的其他价值观都很好，所以我很困惑。 GraphQL Playground 抛出的错误是 SQLSTATE[23502]: Not null violation: 7 ERROR: null value in column \"date_of_birth\" violates not-null constraint\nDETAIL: Failing row contains (17, Blaze, blaze@test.com, null, ABadPassword, null, 2020-08-26 19:54:38, 2020-08-26 19:54:38, null). (SQL: insert into \"users\" (\"username\", \"password\", \"email\", \"updated_at\", \"created_at\") values (Blaze, ABadPassword, blaze@test.com, 2020-08-26 19:54:38, 2020-08-26 19:54:38) returning \"id\")"

在 GraphQL Playground 中尝试的这个 Mutation：

mutation {
 createUser(
  username: "Blaze"
  email: "blaze@test.com"
  password: "ABadPassword"
  date_of_birth: "1998-01-16 00:00:00"
){
  id
 }
}

这是我的架构：

"A date string with format `Y-m-d`, e.g. `2011-05-23`."
scalar Date @scalar(class: "Nuwave\\Lighthouse\\Schema\\Types\\Scalars\\Date")

"A datetime string with format `Y-m-d H:i:s`, e.g. `2018-05-23 13:43:32`."
scalar DateTime @scalar(class: "Nuwave\\Lighthouse\\Schema\\Types\\Scalars\\DateTime")

type Mutation {
createUser(
    username: String @rules(apply: ["required", "unique:users,username"]),
    password: String @rules(apply: ["required"]),
    email: String @rules(apply: ["required", "unique:users,email"]),
    date_of_birth: DateTime @rules(apply: ["required"])
): User! @create
}

type User {
  id: ID!
  username: String!
  email: String!
  email_verified_at: DateTime
  password: String!
  created_at: DateTime!
  updated_at: DateTime!
  date_of_birth: DateTime!
}

这是应用程序中 User.php 文件中的我的用户：

<?php

namespace App;

use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;

class User extends Authenticatable
{
use Notifiable;

/**
 * The attributes that are mass assignable.
 *
 * @var array
 */
protected $fillable = [
    'username', 'email', 'password',
    'date_of_birth' => 'datetime'
];

/**
 * The attributes that should be hidden for arrays.
 *
 * @var array
 */
protected $hidden = [
    'password', 'remember_token',
];

/**
 * The attributes that should be cast to native types.
 *
 * @var array
 */
protected $casts = [
    'email_verified_at' => 'datetime',
];
}

这是我在数据库中由迁移创建的表：

DatabaseName=# SELECT * FROM users;
id | username | email | email_verified_at | password | remember_token | created_at | updated_at| 
date_of_birth  

希望这为该错误提供了足够的上下文，并提前感谢您的帮助。

Answer 1

我认为您的问题在于您如何声明模型的$fillable。您添加一个条目索引'date_of_birth' 和值'datetime'，这将使laravel 认为可填充值是datetime

改成这个

/**
 * The attributes that are mass assignable.
 *
 * @var array
 */
protected $fillable = [
    'username', 'email', 'password', 'date_of_birth',
];