baoshi-was/app/StationTaskBatch.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasManyThrough;
use Illuminate\Database\Eloquent\Relations\HasOne;
use Illuminate\Database\Eloquent\Relations\MorphOne;

use App\Traits\ModelLogChanging;

class StationTaskBatch extends Model
{
    use ModelLogChanging;

    protected $fillable=['batch_id','station_id','station_task_batch_type_id','status'];

    function station(): BelongsTo
    {
        return $this->belongsTo(Station::class);
    }
    function stationTask(): BelongsTo
    {
        return $this->belongsTo(StationTask::class);
    }

    public function batch(): BelongsTo
    {   //波次
        return $this->belongsTo(Batch::class);
    }
    function stationTaskCommodities(): HasMany
    {
        return $this->hasMany(StationTaskCommodity::class);
    }
    function stationTaskMaterialBoxes(): HasMany
    {
        return $this->hasMany(StationTaskMaterialBox::class);
    }
    function materialBoxes(): HasManyThrough
    {
        return $this->hasManyThrough(
            MaterialBox::class,
            StationTaskMaterialBox::class,
            'station_task_batch_id',
            'id',
            'id',
            'material_box_id'
        );
    }

}