限制 Laravel 中的记录插入

Question

限制在Laravel

中插入记录

目前我想要实现的是我想将记录限制为 100 现在每当我们尝试插入新记录时我们应该删除一条（第一条）记录并插入新创建的一条

目前我正在像这样手动操作

if(Logs::count() >= 100){ Logs::fist()->delete(); //fuction call again } 
else{ Logs::create(); }

我想简化这个并尝试集中化

Answer 1

是的，经过一些研究，我找到了解决方案，我使用了模型观察器

protected static function boot()
    {
        parent::boot();

        static::created(function ($model) {
           /* Getting the log limt */
            $setting = Setting::where(['option' => 'log_queue_size'])->first();
            if ($setting) {
                $limit = $setting->value['log_queue_size'] ?? 100;
                $logQuery = Log::get();

                $keepIds = $logQuery->take($limit)->pluck('id');
                Log::whereNotIn('id', $keepIds)->delete();
            }
           
        });
    }

Answer 2

您不需要从数据库中获取所有记录您只需要记录数

/**
     * The "booting" method of the model.
     *
     * @return void
     */
    protected static function boot()
    {
        parent::boot();


        static::created(function ($model) {
            /* Getting the log limt */
            $setting = Setting::where(['option' => 'log_queue_size'])->first();
            if ($setting) {
                $limit = $setting->value['log_queue_size'] ?? 100;               
                $actualCount = Log::query()->count();

                if ($actualCount > $limit) {
                    $recordsToDelete = $actualCount - $limit;
                    Log::query()->latest()->take($recordsToDelete)->delete();
                }
            }
        });
    }

限制 Laravel 中的记录插入

Limit the Insert of Records in Laravel

query-builder

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laravel-query-builder