diff --git a/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php b/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
index 94e6e95f5288..57f9e8f202a7 100644
--- a/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
+++ b/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
@@ -433,6 +433,25 @@ protected function getArrayableItems(array $values)
         return $values;
     }
 
+    /**
+     * Determine whether an attribute exists on the model.
+     *
+     * @param  string $key
+     * @return bool
+     */
+    public function hasAttribute($key)
+    {
+        if (! $key) {
+            return false;
+        }
+
+        return array_key_exists($key, $this->attributes) ||
+            array_key_exists($key, $this->casts) ||
+            $this->hasGetMutator($key) ||
+            $this->hasAttributeMutator($key) ||
+            $this->isClassCastable($key);
+    }
+
     /**
      * Get an attribute from the model.
      *
@@ -448,11 +467,7 @@ public function getAttribute($key)
         // If the attribute exists in the attribute array or has a "get" mutator we will
         // get the attribute's value. Otherwise, we will proceed as if the developers
         // are asking for a relationship's value. This covers both types of values.
-        if (array_key_exists($key, $this->attributes) ||
-            array_key_exists($key, $this->casts) ||
-            $this->hasGetMutator($key) ||
-            $this->hasAttributeMutator($key) ||
-            $this->isClassCastable($key)) {
+        if ($this->hasAttribute($key)) {
             return $this->getAttributeValue($key);
         }
 
diff --git a/tests/Database/DatabaseEloquentBelongsToManyWithCastedAttributesTest.php b/tests/Database/DatabaseEloquentBelongsToManyWithCastedAttributesTest.php
index 34f89e8c49ef..96c3e24b2a48 100644
--- a/tests/Database/DatabaseEloquentBelongsToManyWithCastedAttributesTest.php
+++ b/tests/Database/DatabaseEloquentBelongsToManyWithCastedAttributesTest.php
@@ -21,6 +21,7 @@ public function testModelsAreProperlyMatchedToParents()
     {
         $relation = $this->getRelation();
         $model1 = m::mock(Model::class);
+        $model1->shouldReceive('hasAttribute')->passthru();
         $model1->shouldReceive('getAttribute')->with('parent_key')->andReturn(1);
         $model1->shouldReceive('getAttribute')->with('foo')->passthru();
         $model1->shouldReceive('hasGetMutator')->andReturn(false);
@@ -29,6 +30,7 @@ public function testModelsAreProperlyMatchedToParents()
         $model1->shouldReceive('getRelationValue', 'relationLoaded', 'relationResolver', 'setRelation', 'isRelation')->passthru();
 
         $model2 = m::mock(Model::class);
+        $model2->shouldReceive('hasAttribute')->passthru();
         $model2->shouldReceive('getAttribute')->with('parent_key')->andReturn(2);
         $model2->shouldReceive('getAttribute')->with('foo')->passthru();
         $model2->shouldReceive('hasGetMutator')->andReturn(false);
diff --git a/tests/Database/DatabaseEloquentModelTest.php b/tests/Database/DatabaseEloquentModelTest.php
index 2b8f11eaee8e..7c5e22bd7c3e 100755
--- a/tests/Database/DatabaseEloquentModelTest.php
+++ b/tests/Database/DatabaseEloquentModelTest.php
@@ -3024,6 +3024,19 @@ public function testDiscardChanges()
         $this->assertNull($user->getOriginal('name'));
         $this->assertNull($user->getAttribute('name'));
     }
+
+    public function testHasAttribute()
+    {
+        $user = new EloquentModelStub([
+            'name' => 'Mateus',
+        ]);
+
+        $this->assertTrue($user->hasAttribute('name'));
+        $this->assertTrue($user->hasAttribute('password'));
+        $this->assertTrue($user->hasAttribute('castedFloat'));
+        $this->assertFalse($user->hasAttribute('nonexistent'));
+        $this->assertFalse($user->hasAttribute('belongsToStub'));
+    }
 }
 
 class EloquentTestObserverStub