Taks 4 - belongsToMany pivot

README.md

@@ -51,3 +51,11 @@ Test method `test_show_users_comments()`.
 
 ---
 
+## Task 4. BelongsToMany - Pivot Table Name.
+
+In the route `/roles`, the table should load the roles with the number of users belonging to them. But the relationship in `app/Models/Role.php` model is defined incorrectly, fix that relationship definition.
+
+Test method `test_show_roles_with_users()`.
+
+---
+

app/Http/Controllers/RoleController.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Role;
+
+class RoleController extends Controller
+{
+    public function index()
+    {
+        $roles = Role::withCount('users')->get();
+
+        return view('roles.index', compact('roles'));
+    }
+}

app/Models/Role.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Role extends Model
+{
+    use HasFactory;
+
+    protected $fillable = ['name'];
+
+    public function users()
+    {
+        // TASK: fix this by adding a parameter
+        return $this->belongsToMany(User::class);
+    }
+}

database/migrations/2021_11_22_053957_create_roles_table.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateRolesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('roles', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('roles');
+    }
+}

database/migrations/2021_11_22_054017_create_users_roles_table.php

@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateUsersRolesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('users_roles', function (Blueprint $table) {
+            $table->foreignId('user_id')->constrained();
+            $table->foreignId('role_id')->constrained();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('users_roles');
+    }
+}

resources/views/roles/index.blade.php

@@ -0,0 +1,5 @@
+<ul>
+    @foreach ($roles as $role)
+        <li>{{ $role->name }} ({{ $role->users_count }})</li>
+    @endforeach
+</ul>

routes/web.php

@@ -22,3 +22,5 @@ Route::get('tasks', [TaskController::class, 'index']);
 Route::post('tasks', [TaskController::class, 'store'])->middleware('auth');
 
 Route::get('users/{user}', [\App\Http\Controllers\UserController::class, 'show']);
+
+Route::get('roles', [\App\Http\Controllers\RoleController::class, 'index']);

tests/Feature/RelationshipsTest.php

@@ -3,9 +3,11 @@
 namespace Tests\Feature;
 
 use App\Models\Comment;
+use App\Models\Role;
 use App\Models\Task;
 use App\Models\User;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\DB;
 use Tests\TestCase;
 
 class RelationshipsTest extends TestCase
@@ -48,4 +50,18 @@ class RelationshipsTest extends TestCase
         $response = $this->get('/users/' . $user->id);
         $response->assertStatus(200);
     }
+
+    // TASK: pivot table name in the list
+    public function test_show_roles_with_users()
+    {
+        $user = User::factory()->create();
+        $role = Role::create(['name' => 'Admin']);
+        DB::table('users_roles')->insert([
+            'role_id' => $role->id,
+            'user_id' => $user->id
+        ]);
+
+        $response = $this->get('/roles');
+        $response->assertStatus(200);
+    }
 }