parking_manage_system/app/Models/AdminConfigs.php

<?php

namespace App\Models;

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

class AdminConfigs extends Model
{
    use HasFactory, SoftDeletes;

    protected $fillable = [
        'content',
        'user_id'
    ];

    protected $hidden = [
        'deleted_at',
        'updated_at'
    ];

    protected $casts = [
        'content' => 'json'
    ];

    public static function getRepairColor()
    {
        $content = AdminConfigs::query()->where(
            'name',
            'parking_repair'
        )->value('content');
        if ($content && isset($content['color'])) {
            return $content['color'];
        }
        return '';
    }
}