codigo actual del servidor, con avances de joan

app/Models/Address.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Address extends Model
+{
+    protected $fillable = ['set_default'];
+
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function country()
+    {
+        return $this->belongsTo(Country::class);
+    }
+    
+    public function state()
+    {
+        return $this->belongsTo(State::class);
+    }
+    
+    public function city()
+    {
+        return $this->belongsTo(City::class);
+    }
+}