diff --git a/src/Illuminate/Http/Concerns/InteractsWithInput.php b/src/Illuminate/Http/Concerns/InteractsWithInput.php
index 69b00672de88..d5c58e8a3f38 100644
--- a/src/Illuminate/Http/Concerns/InteractsWithInput.php
+++ b/src/Illuminate/Http/Concerns/InteractsWithInput.php
@@ -112,14 +112,19 @@ public function hasAny($keys)
      *
      * @param  string  $key
      * @param  callable  $callback
+     * @param  callable|null  $default
      * @return $this|mixed
      */
-    public function whenHas($key, callable $callback)
+    public function whenHas($key, callable $callback, callable $default = null)
     {
         if ($this->has($key)) {
             return $callback(data_get($this->all(), $key)) ?: $this;
         }
 
+        if ($default) {
+            return $default();
+        }
+
         return $this;
     }
 
@@ -185,14 +190,19 @@ public function anyFilled($keys)
      *
      * @param  string  $key
      * @param  callable  $callback
+     * @param  callable|null  $default
      * @return $this|mixed
      */
-    public function whenFilled($key, callable $callback)
+    public function whenFilled($key, callable $callback, callable $default = null)
     {
         if ($this->filled($key)) {
             return $callback(data_get($this->all(), $key)) ?: $this;
         }
 
+        if ($default) {
+            return $default();
+        }
+
         return $this;
     }
 
diff --git a/tests/Http/HttpRequestTest.php b/tests/Http/HttpRequestTest.php
index c019499419f6..33611a32d28a 100644
--- a/tests/Http/HttpRequestTest.php
+++ b/tests/Http/HttpRequestTest.php
@@ -304,7 +304,7 @@ public function testWhenHasMethod()
     {
         $request = Request::create('/', 'GET', ['name' => 'Taylor', 'age' => '', 'city' => null]);
 
-        $name = $age = $city = $foo = false;
+        $name = $age = $city = $foo = $bar = false;
 
         $request->whenHas('name', function ($value) use (&$name) {
             $name = $value;
@@ -322,17 +322,24 @@ public function testWhenHasMethod()
             $foo = 'test';
         });
 
+        $request->whenHas('bar', function () use (&$bar) {
+            $bar = 'test';
+        }, function () use (&$bar) {
+            $bar = true;
+        });
+
         $this->assertSame('Taylor', $name);
         $this->assertSame('', $age);
         $this->assertNull($city);
         $this->assertFalse($foo);
+        $this->assertTrue($bar);
     }
 
     public function testWhenFilledMethod()
     {
         $request = Request::create('/', 'GET', ['name' => 'Taylor', 'age' => '', 'city' => null]);
 
-        $name = $age = $city = $foo = false;
+        $name = $age = $city = $foo = $bar = false;
 
         $request->whenFilled('name', function ($value) use (&$name) {
             $name = $value;
@@ -350,10 +357,17 @@ public function testWhenFilledMethod()
             $foo = 'test';
         });
 
+        $request->whenFilled('bar', function () use (&$bar) {
+            $bar = 'test';
+        }, function () use (&$bar) {
+            $bar = true;
+        });
+
         $this->assertSame('Taylor', $name);
         $this->assertFalse($age);
         $this->assertFalse($city);
         $this->assertFalse($foo);
+        $this->assertTrue($bar);
     }
 
     public function testMissingMethod()