Create TopicsController.php

app/Http/Controllers/TopicsController.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+use App\Topic;
+use App\Http\Resources\TopicResource;
+use Illuminate\Http\JsonResponse;
+
+class TopicsController extends Controller
+{
+    /**
+     * Discover Topics
+     * 
+     *  Take Random 14 Topics from Database
+     *
+     */
+    public function index()
+    {
+        return TopicResource::collection(Topic::inRandomOrder()->take(14)->get());
+    }
+    
+    /**
+     *  Load all the articles for a given topics
+     *
+     * @param  mixed $topic
+     * @return JsonResponse
+     */
+    public function show(Topic $topic) : JsonResponse
+    {
+        return response()->json([
+            'topic' => $topic,
+            'articles' => $topic->articles()->paginate(8)
+        ]);
+    }
+}