Topic Filter dedicated classes

app/Http/Controllers/API/TopicFilter.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Http\Controllers\API;
+
+use Illuminate\Http\Request;
+use App\Http\Controllers\Controller;
+use App\Article;
+
+class TopicFilter extends Controller
+{
+    /**
+     * Handle the incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return \Illuminate\Http\Response
+     */
+    public function __invoke(Request $request)
+    {
+        $request->validate([
+            "keys" => "required"
+        ]);
+
+        $keys = explode(',', $request->get('keys'));
+
+        return Article::with('source')->whereHas('topics', function ($q) use ($keys) {
+            $q->whereIn('slug', $keys);
+        })
+            ->latest('published_date')
+            ->paginate(12);
+    }
+}

routes/api.php

@@ -22,6 +22,8 @@ use App\Http\Controllers\API\NewsLetterAPIController;
 Route::get('today', \API\TodaysPick::class)->name('api.today');
 Route::get('recent', \API\RecentArticles::class)->name('api.recent');
 
+Route::get('topic_filter', \API\TopicFilter::class)->name('api.topic_filter');
+
 Route::get('topics', [TopicsAPIController::class, 'index'])->name('api.topics.index');
 Route::get('topic/{topic:slug}', [TopicsAPIController::class, 'show'])->name('api.topics.show');