php - 通过 laravel echo 服务器广播公共频道时，可以将变量从前端传递到事件吗？

Question

我工作过的代码：

前端代码 resources/js/components/OnlineWall.vue：

        mounted() {

            window.Echo.channel('laravel_database_new-payload')
                .listen('.new-payload-event', (e) => {
                    console.info('listen');
                    console.log(e.payload);
                })

        }

事件代码 app/Events/NewPayload.php：

<?php

namespace App\Events;

use Illuminate\Broadcasting\Channel;
use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Broadcasting\PresenceChannel;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Queue\SerializesModels;
use App\Payload;

class NewPayload implements ShouldBroadcast
{
    use Dispatchable, InteractsWithSockets, SerializesModels;

    public $payload;

    /**
     * NewPayload constructor.
     * @param Payload $payload
     * @return void
     */
    public function __construct(Payload $payload)
    {
        $this->payload = $payload;
    }

    /**
     * Get the channels the event should broadcast on.
     *
     * @return \Illuminate\Broadcasting\Channel|array
     */
    public function broadcastOn()
    {
        return new Channel('new-payload');
    }

    /**
     * Custom broadcast message name
     *
     * @return string
     */
    public function broadcastAs()
    {
        return 'new-payload-event';
    }

}

如果我触发事件：NewPayload::dispatch($testNewPayload);一切正常。

但我需要将整数变量从 vue 组件传递给 laravel 事件（city_id）

如果 city_id 与事件中 Payload 模型的 city_id 相同（在 $testNewPayload 中），则触发 event 。否则不要触发事件。

有可能的？

频道是公开的，Laravel 7.0

谢谢！

标签： phplaravellaravel-echo

Answer 1

解决了。

mounted() {

            window.Echo.channel(`laravel_database_new-payload.${this.city_id}`)
                .listen('.new-payload-event', (e) => {
                    console.info('listen');
                    console.log(e.payload);
                })

        }

    public function broadcastOn()
    {
        return new Channel('new-payload.'.$this->payload->city_id);
    }