added subject relation on reputation, closes #7

Author: saqueib

README.md

@@ -172,6 +172,20 @@ foreach($user->reputations as $reputation) {
 }
 ``` 
 
+If you want to get all the points given on a `subject` model. You should define a `morphMany` relations. For example on post model.
+
+```php
+    /**
+     * Get all the post's reputation.
+     */
+    public function reputations()
+    {
+        return $this->morphMany('QCod\Gamify\Reputation', 'subject');
+    }
+```
+
+Now you can get all the reputation given on a `Post` using `$post->reputations`.
+
 ### Configure a Point Type
 
 #### Point payee

src/Reputation.php

@@ -18,6 +18,16 @@ public function payee()
         return $this->belongsTo(config('gamify.payee_model'), 'payee_id');
     }
 
+    /**
+     * Get the owning subject model
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\MorphTo
+     */
+    public function subject()
+    {
+        return $this->morphTo();
+    }
+
     /**
      * Undo last point
      *

tests/Models/Post.php

@@ -25,4 +25,9 @@ public function bestReply()
     {
         return $this->hasOne(Reply::class, 'id', 'best_reply_id');
     }
+
+    public function reputations()
+    {
+        return $this->morphMany('QCod\Gamify\Reputation', 'subject');
+    }
 }

tests/PointTest.php

@@ -69,6 +69,26 @@ public function it_gives_point_to_a_user()
         ]);
     }
 
+    /**
+     * it can access a reputation payee and subject
+     *
+     * @test
+     */
+    public function it_can_access_a_reputation_payee_and_subject()
+    {
+        $user = $this->createUser();
+        $post = $this->createPost(['user_id' => $user->id]);
+
+        $user->givePoint(new FakeCreatePostPoint($post));
+
+        $point = $user->reputations()->first();
+
+        $this->assertEquals($user->id, $point->payee->id);
+        $this->assertEquals($post->id, $point->subject->id);
+
+        $this->assertEquals('FakeCreatePostPoint', $post->reputations->first()->name);
+    }
+
     /**
      * it only adds unique point reward if property is set on point type
      *