RailwayTwo/app/Models/DeviceName.php

<?php

namespace App\Models;

class DeviceName extends BaseModel
{
    public function device()
    {
        return $this->belongsTo('App\Models\Device', 'device_id');
    }

    public function getNameSpecOptions()
    {
        $names = DeviceName::select('name as text', 'id as value')->get();
        $names = $names->prepend($this->transObject(['text' => '设备名称', 'value' => '']));
        foreach($names as $name) {
            $specs  = Spec::where('device_name_id', $name->value)->select('name as text', 'id as value')->get();
            $name->specs = $specs->prepend($this->transObject(['text' => '规格型号', 'value' => '']));
        }
        return $names;
    }

    public function transObject($items)
    {
        return json_decode(json_encode($items));
    }
}