Task 7 - polymorphic

README.md

@@ -75,3 +75,11 @@ Test method `test_countries_with_team_size()`.
 
 ---
 
+## Task 6. Polymorphic Attachments
+
+In the route `/attachments`, the table should show the filenames and the class names of Task and Comment models. Fix the `app/Models/Attachment.php` relationship to make it work.
+
+Test method `test_attachments_polymorphic()`.
+
+---
+

app/Http/Controllers/AttachmentController.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Attachment;
+
+class AttachmentController extends Controller
+{
+    public function index()
+    {
+        $attachments = Attachment::all();
+
+        return view('attachments.index', compact('attachments'));
+    }
+}

app/Models/Attachment.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Attachment extends Model
+{
+    use HasFactory;
+
+    protected $fillable = ['filename', 'attachable_id', 'attachable_type'];
+
+    public function attachable()
+    {
+        // TASK: fill in the code to make it work
+    }
+}

database/migrations/2021_11_22_081915_create_attachments_table.php

@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateAttachmentsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('attachments', function (Blueprint $table) {
+            $table->id();
+            $table->string('filename');
+            $table->morphs('attachable');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('attachments');
+    }
+}

resources/views/attachments/index.blade.php

@@ -0,0 +1,5 @@
+<ul>
+    @foreach ($attachments as $attachment)
+        <li>{{ $attachment->filename }} {{ get_class($attachment->attachable) }}</li>
+    @endforeach
+</ul>

routes/web.php

@@ -28,3 +28,5 @@ Route::get('roles', [\App\Http\Controllers\RoleController::class, 'index']);
 Route::get('teams', [\App\Http\Controllers\TeamController::class, 'index']);
 
 Route::get('countries', [\App\Http\Controllers\CountryController::class, 'index']);
+
+Route::get('attachments', [\App\Http\Controllers\AttachmentController::class, 'index']);

tests/Feature/RelationshipsTest.php

@@ -2,6 +2,7 @@
 
 namespace Tests\Feature;
 
+use App\Models\Attachment;
 use App\Models\Comment;
 use App\Models\Country;
 use App\Models\Role;
@@ -104,4 +105,32 @@ class RelationshipsTest extends TestCase
         $response = $this->get('/countries');
         $response->assertSee('avg team size 4');
     }
+
+    // TASK: polymorphic relations
+    public function test_attachments_polymorphic()
+    {
+        $task = Task::create(['name' => 'Some task']);
+        $comment = Comment::create([
+            'task_id' => $task->id,
+            'name' => 'Some name',
+            'comment' => 'Some comment'
+        ]);
+        Attachment::create([
+            'filename' => 'something.jpg',
+            'attachable_id' => $task->id,
+            'attachable_type' => Task::class
+        ]);
+        Attachment::create([
+            'filename' => 'something.pdf',
+            'attachable_id' => $comment->id,
+            'attachable_type' => Comment::class
+        ]);
+
+        $response = $this->get('/attachments');
+        $response->assertStatus(200);
+        $response->assertSee('something.jpg');
+        $response->assertSee('something.pdf');
+        $response->assertSee('Task');
+        $response->assertSee('Comment');
+    }
 }