Fix invalid() and valid() methods. (issue #14646)

invalid() and valid() methods where returning empty arrays
Issue link: laravel/framework#14646

Validator.php

@@ -487,6 +487,22 @@ protected function validate($attribute, $rule)
         }
     }
 
+    /**
+     * Generate a key map to determine the valid
+     * and invalid data
+     * @return array
+     */
+    protected function getMessagesKeyMap()
+    {
+        $map = [];
+
+        foreach($this->messages()->toArray() as $key => $message){
+            $map []= explode('.', $key)[0];
+        }
+
+        return array_flip(array_unique($map));
+    }
+
     /**
      * Returns the data which was valid.
      *
@@ -498,7 +514,7 @@ public function valid()
             $this->passes();
         }
 
-        return array_diff_key($this->data, $this->messages()->toArray());
+        return array_diff_key($this->data, $this->getMessagesKeyMap());
     }
 
     /**
@@ -512,7 +528,7 @@ public function invalid()
             $this->passes();
         }
 
-        return array_intersect_key($this->data, $this->messages()->toArray());
+        return array_intersect_key($this->data, $this->getMessagesKeyMap());
     }
 
     /**