A few problems were fixed in backend, also was improved appearance of…

… app

.gitignore

@@ -8,3 +8,4 @@ Homestead.json
 Homestead.yaml
 .env
 _ide_helper.php
+config/ide-helper.php

app/Category.php

@@ -6,8 +6,8 @@
 
 class Category extends Model
 {
-    public function products()
+    public function subcategories()
     {
-        return $this->hasMany('App\Product');
+        return $this->hasMany('App\Subcategory');
     }
 }

app/Http/Controllers/Auth/RegisterController.php

@@ -2,6 +2,7 @@
 
 namespace App\Http\Controllers\Auth;
 
+use App\Cart;
 use App\User;
 use App\Http\Controllers\Controller;
 use Illuminate\Support\Facades\Validator;
@@ -62,10 +63,26 @@ protected function validator(array $data)
      */
     protected function create(array $data)
     {
-        return User::create([
-            'name' => $data['name'],
-            'email' => $data['email'],
-            'password' => bcrypt($data['password']),
-        ]);
+
+        /*
+         * Create new user
+         */
+        $user = new User();
+        $user->name = $data['name'];
+        $user->email = $data['email'];
+        $user->password = bcrypt($data['password']);
+        $user->save();
+
+        /*
+         * Create cart for new user
+         */
+        $cart = new Cart();
+
+        /*
+         * Add this cart to newly created user
+         */
+        $user->cart()->save($cart);
+
+        return $user;
     }
 }

app/Http/Controllers/SubcategoryController.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+
+class SubcategoryController extends Controller
+{
+    //
+}

app/Product.php

@@ -6,8 +6,8 @@
 
 class Product extends Model
 {
-    public function category()
+    public function subcategory()
     {
-        return $this->belongsTo('App\Category');
+        return $this->belongsTo('App\Subcategory');
     }
 }

app/Providers/AppServiceProvider.php

@@ -2,6 +2,7 @@
 
 namespace App\Providers;
 
+use DB;
 use Illuminate\Support\ServiceProvider;
 
 class AppServiceProvider extends ServiceProvider
@@ -13,7 +14,9 @@ class AppServiceProvider extends ServiceProvider
      */
     public function boot()
     {
-        //
+        if (DB::connection() instanceof \Illuminate\Database\SQLiteConnection) {
+            DB::statement(DB::raw('PRAGMA foreign_keys=1'));
+        }
     }
 
     /**

app/Subcategory.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Subcategory extends Model
+{
+    public function category()
+    {
+        return $this->belongsTo('App\Category');
+    }
+
+    public function products()
+    {
+        return $this->hasMany('App\Product');
+    }
+}

composer.json

@@ -8,6 +8,7 @@
         "php": ">=5.6.4",
         "barryvdh/laravel-debugbar": "v2.3.2",
         "barryvdh/laravel-ide-helper": "v2.3.2",
+        "doctrine/dbal": "2.6.x-dev",
         "laravel/framework": "5.4.*",
         "laravel/tinker": "~1.0",
         "laravelcollective/html": "~5.0"