如何根据 octobercms 中其他列中的公共值（id）获取列的 SUM

Question

我卡在这里了。希望有人能帮忙。我有一个数据库，用于存储任何项目的购买完成用户。

这是我的 table 在 twig

                       <tbody>
                             {% for paid_log in paid_logs %}
                              {% paid_log.user_id == user.id and paid_log.status == 2 %}
                                    <tr>
                                        <td>{{paid_log.project.name }}</td> 
                                        <td>{{paid_log.amount }}</td>
                                         
                                    </tr>
                           
                             {% endif %}
                             {% endfor %}

                       </tbody>

结果

|Project ID| Purchase Amount|

1          |1000
1          |1010
2          |2111
4          |9954
1          |9871
4          |6121

我要循环数据库，在项目ID相同的情况下汇总购买金额？

期待这样的事情：

Project ID |Purchase Total
1          |11881
2          |2111
4          |16075

Answer 1

虽然可能，但 Twig 并不适合进行此类计算。代码变得非常混乱。相反，我建议在定义 paid_logs.

的 onStart() 中创建数据结构

示例：

function onStart()
{
    // ... define $paid_logs and $user
    $data = [];
    foreach ($paid_logs as $paid_log) {
        if ($paid_log->user_id == $user->id && $paid_log->status == 2) {
            if (!isset($data[$paid_log->project_id])) {
                $data[$paid_log->project->id] = 0;
            }
            $data[$paid_log->project->id] += $paid_log->amount;
        }
    }
    $this['data'] = $data;
}

然后，在你的 Twig 中你可以简化：

{% for project_id, amount in data %}
    {{ project_id }} | {{ amount }}
{% endfor %}

如何根据 octobercms 中其他列中的公共值（id）获取列的 SUM

How to get the SUM of a column based on the common value(id) in other column in octobercms

twig

octobercms

octobercms-plugins

octobercms-backend