API Resources

app/Http/Resources/ArticleResource.php

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+<?php
+
+namespace App\Http\Resources;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+use App\Http\Resources\SourceResource;
+use App\Http\Resources\TopicResource;
+
+class ArticleResource extends JsonResource
+{
+    /**
+     * Transform the resource into an array.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return array
+     */
+    public function toArray($request)
+    {
+        return [
+            "id" => $this->id,
+            "title" => $this->title,
+            "author" => $this->author,
+            "featured_image" => $this->featured_image,
+            "body" => $this->body,
+            "source" => new SourceResource($this->source),
+            "topics" => TopicResource::collection($this->topics),
+            "published_date" => $this->published_date
+        ];
+    }
+}

app/Http/Resources/SourceResource.php

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+<?php
+
+namespace App\Http\Resources;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class SourceResource extends JsonResource
+{
+    /**
+     * Transform the resource into an array.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return array
+     */
+    public function toArray($request)
+    {
+        return [
+            "name" => $this->name,
+            "slug" => $this->slug,
+            "logo" => $this->logo,
+            "url" => $this->url
+        ];
+    }
+}

app/Http/Resources/TopicResource.php

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+<?php
+
+namespace App\Http\Resources;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class TopicResource extends JsonResource
+{
+    /**
+     * Transform the resource into an array.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return array
+     */
+    public function toArray($request)
+    {
+        return [
+            "name" => $this->name,
+            "slug" => $this->slug
+        ];
+    }
+}