Add job has has many comments relation

app/Entities/Projects/Issue.php

@@ -3,6 +3,7 @@
 namespace App\Entities\Projects;
 
 use App\Entities\Users\User;
+use App\Entities\Projects\Comment;
 use App\Entities\Projects\Project;
 use Illuminate\Database\Eloquent\Model;
 
@@ -48,4 +49,14 @@ class Issue extends Model
     {
         return '<span class="badge">'.$this->status.'</span>';
     }
+
+    /**
+     * Issue has many comments relation.
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\MorphMany
+     */
+    public function comments()
+    {
+        return $this->morphMany(Comment::class, 'commentable');
+    }
 }

app/Providers/AppServiceProvider.php

@@ -22,6 +22,7 @@ class AppServiceProvider extends ServiceProvider
 
         Relation::morphMap([
             'projects' => 'App\Entities\Projects\Project',
+            'issues'   => 'App\Entities\Projects\Issue',
             'jobs'     => 'App\Entities\Projects\Job',
         ]);
     }

tests/Unit/Models/IssueTest.php

@@ -5,7 +5,9 @@ namespace Tests\Unit\Models;
 use Tests\TestCase;
 use App\Entities\Users\User;
 use App\Entities\Projects\Issue;
+use App\Entities\Projects\Comment;
 use App\Entities\Projects\Project;
+use Illuminate\Support\Collection;
 use App\Entities\Projects\Priority;
 use Illuminate\Foundation\Testing\RefreshDatabase;
 
@@ -81,4 +83,17 @@ class IssueTest extends TestCase
 
         $this->assertEquals('<span class="label label-'.$colorClass.'">'.$issue->priority.'</span>', $issue->priority_label);
     }
+
+    /** @test */
+    public function an_issue_has_many_comments_relation()
+    {
+        $issue = factory(Issue::class)->create();
+        $comment = factory(Comment::class)->create([
+            'commentable_type' => 'issues',
+            'commentable_id'   => $issue->id,
+        ]);
+
+        $this->assertInstanceOf(Collection::class, $issue->comments);
+        $this->assertInstanceOf(Comment::class, $issue->comments->first());
+    }
 }