将数组作为参数传递给 Event 时出错

Question

当我将数组作为参数传递给TeamMemberUpdating 事件时出现以下错误：

传递给 App\Events\Event ::__construct() 的参数 1 必须是 App\Models\Model 的实例，给定的 Illuminate\Database\Eloquent\Collection 的实例

这里是我触发事件的地方：

$teamMembers = TeamMember::whereIn('email', $request->projectTeamEmails)->get();
event(new TeamMemberUpdating($teamMembers));

我的活动：

class TeamMemberUpdating
{
use Dispatchable, InteractsWithSockets, SerializesModels;
public $teamMembers;
/**
 * Create a new event instance.
 *
 * @return void
 */
public function __construct(TeamMember $teamMembers)
{
    $this->teamMembers = $teamMembers;
}
}

还有我的听众handle() 方法：

public function handle(TeamMemberUpdating $event)

{   
    TeamMemberLog::insert($event->teamMembers);
}

Answer 1

您的事件类被定义为不处理数组，构造函数严格提示TeamMember 的单个实例

public function __construct(TeamMember $teamMembers)
{
    $this->teamMembers = $teamMembers;
}

你可以改成：

public function __construct($teamMembers)
{
    $this->teamMembers = $teamMembers;
}

这样，它将同时接受一个 TeamMember 和一个 Collection 的团队成员。您可以进行instanceof 检查以确定传入的内容。

或者，您可以更改调度方法：

$teamMembers = TeamMember::whereIn('email', $request->projectTeamEmails)->get();
$teamMembers->each(function ($teamMember) {
    event(new TeamMemberUpdating($teamMember));
});

这将为每个模型实例调度一个事件