database - Laravel Eloquent 多对多？

Question

我需要帮助在 eloquent 中编写一个查询，该查询首先在 zipcodes 表中搜索一个城市，然后使用它找到的那些 id 来查找该邮政编码列表中存在的活动。

表：邮政编码 - id（代表邮政编码） - 城市

活动 - id - 名称 - zipcodes_id（与 zipcodes 表相关）

没关系，我终于想通了。

        $zipcodes = Zipcodes::has('activities')->where('city', '=', $city)->get();
        foreach ($zipcodes as $zipcode)
        {
            echo $zipcode->activities;
        }

回报：

[{"id":1,"activity_type":2,"name":"Four Peaks Grill & Tap","zipcodes_id":85032}]

Answer 1

没关系，我终于想通了。

$zipcodes = Zipcodes::has('activities')->where('city', '=', $city)->get();
foreach ($zipcodes as $zipcode)
{
    echo $zipcode->activities;
}

回报：

[{"id":1,"activity_type":2,"name":"Four Peaks Grill & Tap","zipcodes_id":85032}]