在Laravel

Question

我正在Laravel 5.4上构建一个小应用程序并且在syncing pivot table many to many relationship中遇到一点困难，我经历了this link并且没有正确理解，

我有一个必填字段的透视表（我的意思是它有字段）。我有这样的关系：

class Interaction extends Model
{

    public function clientsAssociation()
    {
        return $this->belongsToMany('App\Contact', 'contact_client_interaction',  'interaction_id', 'contact_id')->withPivot('company_id')->withTimestamps();
    }

}

我正在获得一组数组，其中包含与这些模型同步相关的一组值。我对如何放置数据透视数据以及更新时感到困惑：

foreach ($data['clientParticipants'] as $clientParticipant)
{
    if(array_key_exists('company_id', $clientParticipant))
    {
        $contact[] = Contact::find(json_encode($clientParticipant['value']));
        $pivotData = ['company_id' => $clientParticipant['company_id']];
    }
    else
    {
        $contact[] = Contact::find(json_encode($clientParticipant['value']));
        $pivotData = ['company_id' => Contact::find(json_encode($clientParticipant['value']))->company()->withPivot('created_at')->orderBy('pivot_created_at', 'desc')->first()->id])];
    }

    $interaction->clientsAssociation()->sync($contact);
}

指导我实现这一目标。感谢

Answer 1

我做了类似的事情：

foreach ($data['clientParticipants'] as $clientParticipant)
{
    if(array_key_exists('company_id', $clientParticipant))
    {
        $pivotData = ['company_id' => $clientParticipant['company_id']];
        $syncData = Contact::find(json_encode($clientParticipant['value']))->id;
        $contact[$syncData] = $pivotData;
    }
    else
    {
        $value = Contact::find(json_encode($clientParticipant['value']));
        $syncData = $value->id;
        $pivotData = ['company_id' => $value->company()->withPivot('created_at')->orderBy('pivot_created_at', 'desc')->first()->id];
        $contact[$syncData] = $pivotData;
    }
}
$interaction->clientsAssociation()->sync($contact);

它有效。所以基本上想法是使用pivot元素的键来推送一个数组，它将正确执行。