test/app/Http/Models/Project.php

<?php

namespace App\Http\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasOne;

class Project extends Model
{
    public function permissions(): BelongsToMany
    {
        return $this->belongsToMany(
            Permission::class,
            'project_has_permissions',
            'project_id',
            'permission_id'
        );
    }


    public function info(): HasOne
    {
        return $this->hasOne(
            ProjectInfo::class,
            'project_id',
            'id'
        );
    }

    public function ae(): HasOne
    {
        return $this->hasOne(
            User::class,
            'id',
            'ae_id'
        );
    }

    public function scopeProject(Builder $query, $projectIds = null)
    {
        if ($projectIds === null) {
            return $query;
        }
        return $query->where('id', $projectIds);
    }

    public function serialNo()
    {
        return sprintf('R%s-%s', date('Y'), $this->newQuery()->count());
    }

    const COMPANY_TYPE = [
        [
            'key' => 1,
            'title' => '中小型企业'
        ],
        [
            'key' => 2,
            'title' => '国企/上市公司'
        ]
    ];
}