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18 May
4 months ago

h2onock started a new conversation Laravel - Grouping Service Providers?

Hi all, I'm trying to accomplish something with Laravel 5.8 that I've not needed to do before, wanted your advice.

I've changed exactly what I'm trying to do to something very similar so feel free to steal this idea if you want, but the premise is the same for what I'm really trying to do.

The user can view news from several different services, say bbc and sky.

I have a BBCNewsProvider and an SkyNewsProvider set up and both work fine.

The default is BBC but the user can change the setting to Sky if they wish.

I have a NewsController that looks something like this:

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Pagination\LengthAwarePaginator as Paginator;
use Illuminate\Support\Facades\Auth;

use App\Providers\NewsSkyProvider;
use App\Providers\NewsBBCProvider;

class NewsController extends Controller
    protected $news_pvdr;

    public function __construct(NewsBBCProvider $pvdr_bbc, 
                             NewsSkyProvider $pvdr_sky)
        $this->pvdr_bbc = $pvdr_bbc;
        $this->pvdr_sky = $pvdr_sky;

    private function get_results(Request $req)
        $page = (int)$req->query('page') ?: 1;

        $r = $this->news_pvdr->get_results($req->query('q'), $page, $per_page);

        $max = $r->results_total_cnt > \Config::get('news.pagination_max_num') ?
                        \Config::get('news.pagination_max_num') :

        $paginator = new Paginator($r->results, $max, $per_page, $page,
                'path'  => $req->url(),
                'query' => $req->query(),

        $r->results = $paginator;

        return $r;

    private function set_pvdr()
        $pvdrs = [
            'sky' => $this->pvdr_sky,
            'bbc' => $this->pvdr_bbc,

        $default = \Config::get('news.default_news_provider');
        $user_chosen = \Setting::get('news_pvdr');

        if (!in_array($default, $pvdrs))
            \Log::emergency('The default news provider is invalid');

        /* which news provider should we use? */
        /* get provider model */
        $default_pvdr = $pvdrs[$default];
        if ($user_chosen && in_array($desd, $pvdrs))
            $desd = $pvdrs[$desd];
            $desd = $default_pvdr;

        /* if the chosen provider not enabled, fall back to default */
        if ($desd->enabled)
            $this->news_pvdr = $desd;
        else if ($default_pvdr->enabled)
            $this->news_pvdr = $default_pvdr;
            \Log::emergency('No news providers are enabled.');

    public function perform(Request $req)

        $r = $this->get_results($req);

        return view('news', [ 'response' => $r ]);

This works fine with News Providers that look like this: 

namespace App\Providers;

use \App\News;
use \App\NewsResults;

use Illuminate\Support\Facades\DB;
use Illuminate\Support\ServiceProvider;

class NewsBBCProvider extends ServiceProvider
    public $name = 'bbc';
    public $enabled = 1;

    * Register services.
    * @return void
    public function register()
        $this->app->bind('App\Providers\NewsBBCProvider', function($app) {
            return new NewsBBCProvider($app);

    private function parse_results(?array $response):NewsResults
        $sr = new NewsResults();
        $sr->provider = 'BBC';
        if (!$response)
            return $sr;

        $r = $response['response'];

        /* fix encoding of bbc response */
        foreach ($r['results'] as $k => $v) {
            $r['results'][$k]['title'] = html_entity_decode($v['title'], ENT_QUOTES, 'UTF-8');
            $r['results'][$k]['desc'] = html_entity_decode($v['desc'], ENT_QUOTES, 'UTF-8');

        $sr->query = $r['head']['query'];
        $sr->results = $r['results'];
        $sr->results_start = (int)$r['head']['start'];
        $sr->results_end = (int)$r['head']['start'] + (int)$r['head']['return'] - 1;
        $sr->results_total_cnt = (int)$r['head']['results'];

        return $sr;

    public function get_results(string $q, $page, $per_page)
        $url = /* the url */
        $curl_opts = [
            CURLOPT_URL       => $url,
            CURLOPT_USERAGENT => 'TODO',
            CURLOPT_TIMEOUT   => 15,

        $ch = curl_init();
        curl_setopt_array($ch, $curl_opts);

        $response = curl_exec($ch);

        $errors = curl_error($ch);
        $http_response_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);


        $r = $response ? json_decode($response, true) : null;

        return $this->parse_results($r);

The Providers are registered in the normal place ('app.providers').

If I decided to add more providers then I could by copying an existing provider, changing a few bits and then updating the NewsController __construct function accordingly.

However, I also want a settings page that allows the user to choose which should be default. I don't really want to have to update the __construct function in that controller every time I add/remove a service provider, I only really want to add/remove them in one place. I might need to show/use all NewsProviders elsewhere in the app too so being able to grab them all at the same time would be great.

How would I get around this? At first I wondered if I could sort of 'group' all News Providers somehow and inject the group into the NewsController, SettingsController etc... If I then edited the group then voila, I'd get what I want. However I've searched the docs and can't find anything. The answer is probably quite simple for the more seasoned Laravel pro's, at least I hope so!

Thanks all.