hainan/app/Http/Controllers/Api/ChannelController.php

<?php

namespace App\Http\Controllers\Api;
use App\Http\Controllers\Controller;
use App\Models\AgentProduct;
use App\Models\Channel;
use App\Models\UserChannel;
use Illuminate\Support\Facades\Storage;

/**
 * 频道列表
 * Class Channel
 * @package App\Http\Controllers\Api
 */
class ChannelController extends Controller
{
    // 所有频道列表
    public function index()
    {
        $list = Channel::query()
			->where('agent_id', $this->agent_id)
			->orderBy('sort')
			->orderBy('id')
			->get(['id', 'pid', 'name', 'icon']);
		$prefix = Storage::disk('public')->url('');
		foreach ($list as $k => &$v) {
			$v->icon = $prefix . $v->icon;
		}
        return $this->success($list);
    }

    // 我的频道
    public function my()
    {
        $channel_ids = UserChannel::where('user_id', $this->user_id)->value('channels');
        $list = Channel::whereIn('id', $channel_ids)->get(['id', 'pid', 'name', 'icon']);
        return $this->success($list);
    }

    //根据频道ID获取产品
    public function product()
	{
		$channel_id = (int)request()->input('channel_id');

		$list = AgentProduct::list($this->agent_id)
			->whereRaw("FIND_IN_SET($channel_id, `channel_id`)")
			->orderBy('id', 'DESC')
			->simplePaginate();
		$list = $this->paginatePicAddHost($list);
		return $this->success($list);
	}

	//分页列表产品图片加域名
	private function paginatePicAddHost($list)
	{
		if (!$list->isEmpty()) {
			$prefix = Storage::disk('public')->url('');
			foreach ($list->items() as $k=>&$v) {
				$v->pictures = array_map(function($item) use ($prefix) {
					return strpos($item, $prefix) === false ? $prefix . $item : $item;
				}, $v->pictures);
			}
		}
		return $list;
	}
}