Done

app/Models/Article.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class Article extends Model
+{
+    protected $fillable = ['feed_id', 'guid', 'title', 'description', 'link', 'author', 'image_url', 'published_at'];
+    protected $casts = ['published_at' => 'datetime'];
+
+    public function feed(): BelongsTo
+    {
+        return $this->belongsTo(Feed::class);
+    }
+}