Add Request::keys method (#20611)

src/Illuminate/Http/Concerns/InteractsWithInput.php

@@ -165,6 +165,16 @@ public function all($keys = null)
         return $results;
     }
 
+    /**
+     * Get the keys for all input and files for the request.
+     *
+     * @return array
+     */
+    public function keys()
+    {
+        return array_merge(array_keys($this->input()), $this->files->keys());
+    }
+
     /**
      * Retrieve an input item from the request.
      *

tests/Http/HttpRequestTest.php

@@ -308,6 +308,27 @@ public function testAllMethod()
         $this->assertEquals(['developer' => ['name' => 'Taylor', 'age' => null]], $request->all());
     }
 
+    public function testKeysMethod()
+    {
+        $request = Request::create('/', 'GET', ['name' => 'Taylor', 'age' => null]);
+        $this->assertEquals(['name', 'age'], $request->keys());
+
+        $files = [
+            'foo' => [
+                'size' => 500,
+                'name' => 'foo.jpg',
+                'tmp_name' => __FILE__,
+                'type' => 'blah',
+                'error' => null,
+            ],
+        ];
+        $request = Request::create('/', 'GET', [], [], $files);
+        $this->assertEquals(['foo'], $request->keys());
+
+        $request = Request::create('/', 'GET', ['name' => 'Taylor'], [], $files);
+        $this->assertEquals(['name', 'foo'], $request->keys());
+    }
+
     public function testOnlyMethod()
     {
         $request = Request::create('/', 'GET', ['name' => 'Taylor', 'age' => null]);