BadMethodCallException：在 Laravel 8 中调用数据库播种器中未定义的方法

Question

执行命令时出错::

>php artisan migrate:refresh --seed

错误信息是：

 BadMethodCallException

  Call to undefined method App\Models\Diary::diarySubjob()

  at C:\MAMP\htdocs\dominios\vendor\laravel\framework\src\Illuminate\Support\Traits\ForwardsCalls.php:50
     46▕      * @throws \BadMethodCallException
     47▕      */
     48▕     protected static function throwBadMethodCallException($method)
     49▕     {
  ➜  50▕         throw new BadMethodCallException(sprintf(
     51▕             'Call to undefined method %s::%s()', static::class, $method
     52▕         ));
     53▕     }
     54▕ }

  • Bad Method Call: Did you mean App\Models\Diary::subjobs() ?

  1   C:\MAMP\htdocs\dominios\vendor\laravel\framework\src\Illuminate\Support\Traits\ForwardsCalls.php:36
      Illuminate\Database\Eloquent\Model::throwBadMethodCallException()

  2   C:\MAMP\htdocs\dominios\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Model.php:1993
      Illuminate\Database\Eloquent\Model::forwardCallTo()

课堂日记子作业

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Relations\Pivot;

class DiarySubjob extends Pivot
{
    use HasFactory;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'diary_id',
        'work_id',
        'subjob_id',
        'company',
        'customer',
        'repair',
        'duration',
        'observations',
    ];

    /**
     * Indicates if the IDs are auto-incrementing.
     *
     * @var bool
     */
    public $incrementing = true;

    
    /** 
     * Partidas de un diario.
     */
    public function subjobs()
    {
        $this->belongsTo(Subjob::class);
    }


    /**
     * Diarios de una partida.
     */
    public function diaries()
    {
        $this->belongsTo(Diary::class);
    }

    /**
     * Obras o clientes de una partida.
     */
    public function works()
    {
        $this->belongsTo(Work::class);
    }
}

课堂日记

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Diary extends Model
{
    use HasFactory;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'user_id',
        'observations',
        'duration',
        'overtime'
    ];

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

    /**
     * Obtener el usuario/empleado de un diario.
     */ 
    public function user()
    {
        return $this->belongsTo(User::class);
    }

    /** 
     * Obtener las partidas de un parte diario.
     */
    public function subjobs()
    {
        return $this->belongsToMany(Subjob::class)->using(DiarySubjob::class);
    }
}

类子作业

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Subjob extends Model
{
    use HasFactory;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'job_id',
        'name'
    ];

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

    /** 
     * Obtener el trabajo/partida al que pertenece este subtrabajo/subpartida.
     */
    public function job()
    {
        $this->hasMany(Job::class);
    }

    /**
     * Partes de trabajo diarios de la partida.
     */
    public function diaries()
    {
        $this->belogsToMany(Diary::class)->using(DiarySubjob::class);
    }
}

类 DiarySubjobFactory

<?php

namespace Database\Factories;

use App\Models\DiarySubjob;
use App\Models\Diary;
use App\Models\Subjob;
use App\Models\Work;
use Illuminate\Database\Eloquent\Factories\Factory;

class DiarySubjobFactory extends Factory
{
    /**
     * The name of the factory's corresponding model.
     *
     * @var string
     */
    protected $model = DiarySubjob::class;

    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition()
    {
        return [
            'diary_id' => DiarySubjob::diaries()->all()->random()->id,
            'work_id' => Work::all()->random()->id,
            'subjob_id' => Subjob::all()->random()->id,            
            'company' => $this->faker->company(),
            'repair' => $this->faker->boolean(),
            'duration' => '02:00:00',
            'overtime' => '00:00:00',
            'observations' => $this->faker->realText(255, 2)
        ];
    }
}

类 DatabaseSeeder

<?php

namespace Database\Seeders;

use Illuminate\Database\Seeder;

class DatabaseSeeder extends Seeder
{
    /**
     * Seed the application's database.
     *
     * @return void
     */
    public function run()
    {
        \App\Models\Work::factory(5)->create();

        $this->call([
            JobSeeder::class,
            SubJobSeeder::class,
            ConfigurationSeeder::class
        ]);

        \App\Models\User::factory(20)
            ->has(\App\Models\Salary::factory(1))
            ->has(\App\Models\Diary::factory(10))            
            ->create();

        \App\Models\Diary::factory(1)
            ->has(\App\Models\DiarySubjob::factory(15))
            ->create();
    }
}

这行执行时的错误：

\App\Models\Diary::factory(1)
            ->has(\App\Models\DiarySubjob::factory(15))
            ->create();

为了更简洁，我得到了运行这个错误：

->has(\App\Models\DiarySubjob::factory(15))

它告诉我我正在调用一个未定义的方法App\Models\Diary::diarySubjob()，它建议我调用该方法App\Models\Diary： :subjobs() 但是我没有在任何地方调用方法 App\Models\Diary::diarySubjob()

这个错误可能是什么原因造成的？我很失落。有什么建议吗？

Answer 1

您的问题是您没有阅读文档，因为它清楚地表明它与 Laravel 使用的关系名称约定有关。

阅读this 部分文档。

因此，您的解决方案是将您知道出错的部分替换为：

\App\Models\Diary::factory(1)
    ->has(\App\Models\DiarySubjob::factory(15), 'subjobs')
    ->create();

这应该可以解决您的问题。